Journal articles: 'Global positiong system'

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Bahri, Saeful, Satia Suhada, and Jamal Maulana Hudin. "Teknologi Global Positioning Sistem (GPS) Untuk Pelaporan Dan Penjemputan Sampah Berbasis Android." Computer Engineering, Science and System Journal 4, no. 1 (January 30, 2019): 39. http://dx.doi.org/10.24114/cess.v4i1.11358.

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Teknolgi GPS merupakan salah satu teknologi navigasi yang memanfaatkan lebih dari 30 satelite yang mengorbit di 20.000 km diatas permukaan bumi, GPS telah banyak dimanfaatkan untuk berbagai keperluan seperti bidang militer bidang tranportasi dan beberapa bidang lainnya, pada penelitian ini teknologi GPS akan dimanfaatkan untuk menentukan sebuah lokasi tumpukan sampah. Sampah merupakan sebuah masalah di banyak negara didunia tidak terkecuali di Indonesia, sampah merupakan salah satu sumber penyakit jika dibiarkan begitu saja tanpa adanya penanganan, kebiasaan masyarakat dalam membuang sampah secara sembarangan, selain kesadaran dari masyarakat, salah satu yang mempengaruhi prilaku buang sampah sembarangan adalah keterbatasan akses terhadap petugas kebersihan, begitu juga masalah yang dialami oleh petugas kebersihan banyak titik sampah tidak diketahui dan dibiarkan begitu saja hal ini menyebabkan sampah semakin menumpuk, pemanfaatkan teknologi geo tagging pada Global Positiong system (GPS) dapat mempermudah masyarakat dalam pelaporan titik dimana sampah terkumpul yang tidak di ketahui oleh petugas sampah sebelumnya, sehingga petugas pengangkut sampah bisa dengan mudah menemukan titik penjemputan sampah, dengan adanya penandaan lokasi dan pengankutan sampah diharapakan adanya komunikasi aktif antara masyarakat dan petugas kebersihan sehingga tumpukan sampah di titik-titik yang tadinya sulit dijangkau menjadi bisa ditangani lebih cepat

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Bo, Z. Q., G. Weller, T. Lomas, and M. A. Redfern. "Positional protection of transmission systems using Global Positioning System." IEEE Transactions on Power Delivery 15, no. 4 (2000): 1163–68. http://dx.doi.org/10.1109/61.891497.

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Sasaki, Kimiaki. "Position-Detecting System Based on the Global Positioning System." Transportation Research Record: Journal of the Transportation Research Board 1916, no. 1 (January 2005): 30–33. http://dx.doi.org/10.1177/0361198105191600105.

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The Railway Technical Research Institute has developed a position detection system based on a new Global Positioning System (GPS). This system uses GPS to detect the approximate location of a train and then selects one of three algorithms to process the location data and determine the train's precise location. Running tests performed on the system showed that its position error was less than 4 m. This system has the potential to be used to control the car body tilting of tilt trains accurately and allow them to run at the maximum possible speed through the tight curves typical of the narrow-gage lines found in Japan. In addition, the automatic map created by this system makes it much easier to maintain the accuracy of the onboard database.

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D'Eon, Stephen P. "Accuracy and signal reception of a hand-held Global Positioning System (GPS) receiver." Forestry Chronicle 71, no. 2 (April 1, 1995): 192–96. http://dx.doi.org/10.5558/tfc71192-2.

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Accurate and precise reporting of forest survey locations is required to integrate forest survey data with Geographical Information Systems. The accuracies of five Global Positioning System (GPS) survey methods using a hand-held receiver were tested in a mixed forest of trembling aspen and spruce. Accuracy improved by eliminating positions obtained under poor satellite configurations and by using position averaging methods. Single fix positions, taking as little as two minutes to obtain, yielded better than 100m accuracy more than 80% of the time. Allowing the receiver to continuously collect fixes for 15 to 30 minutes and then averaging the fixes yielded a median position error of 17 m. Sixty one stands representing a diversity of cover types, canopy heights, and crown closure in the Petawawa Research Forest were tested during June and July of 1992 for canopy interference with GPS signals. A GPS position was obtained under the canopy in 74% of the stands. Launches of additional GPS satellites since the summer of 1992 have further improved the probability of obtaining accurate geographical positions under forest canopies. Key words: global positioning system, position accuracy, signal reception, canopy interference

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Ge, Maorong, Jan Douša, Xingxing Li, Markus Ramatschi, Thomas Nischan, and Jens Wickert. "A Novel Real-time Precise Positioning Service System: Global Precise Point Positioning With Regional Augmentation." Journal of Global Positioning Systems 11, no. 1 (June 30, 2012): 2–10. http://dx.doi.org/10.5081/jgps.11.1.2.

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BOER, Attila-Laszlo, Marius-Cristian LUCULESCU, Luciana CRISTEA, Sorin-Constantin ZAMFIRA, and Ion BARBU. "COMPARATIVE STUDY BETWEEN GLOBAL POSITIONING SYSTEMS USED ON REMOTELY PILOTED AIRCRAFT SYSTEMS." SCIENTIFIC RESEARCH AND EDUCATION IN THE AIR FORCE 18, no. 1 (June 24, 2016): 127–32. http://dx.doi.org/10.19062/2247-3173.2016.18.1.16.

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Deckert, Christopher J., and Paul V. Bolstad. "Global Positioning System (GPS) Accuracies in Eastern U.S. Deciduous and Conifer Forests." Southern Journal of Applied Forestry 20, no. 2 (May 1, 1996): 81–84. http://dx.doi.org/10.1093/sjaf/20.2.81.

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Abstract This study determined horizontal positional errors when using C/A code GPS receivers under forest canopies and in varied terrain. Positional errors were evaluated for a total of 18 sites: three sites for each of six combinations of canopy (conifer, hardwood) and terrain (ridge, slope, valley). Ten replicates were collected at each site for each of 60, 200, and 500 position fixes. Differentially corrected positional accuracies from conifer sites averaged 18.4 ft, which was significantly greater than the 14.5 ft observed for hardwood sites. For differentially corrected data, positional errors generally increased from ridgetop to valley positions. - Errors decreased when the number of position fixes was increased. South. J. Appl. For. 20(2):81-84.

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Anggara, Ircham Habib, Florence Elfriede Silalahi, and Barandi Sapta Widartono. "Pengembangan Prototipe Sistem Informasi Jaringan Telekomunikasi PT. Telkom Untuk Penentuan Rute Optimal Dalam Penanganan Gangguan Berdasarkan Algoritma Floyd - Warshall." Jurnal Penelitian Pos dan Informatika 7, no. 1 (September 30, 2017): 1. http://dx.doi.org/10.17933/jppi.2017.0701001.

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ABSTRAKSaat ini banyak operator telekomunikasi yang bermunculan di Indonesia sehingga menyebabkan terjadinya persaingan yang tinggi antar operator telekomunikasi. PT. Telkom selaku badan usaha yang berwenang dalam pembangunan dan pengembangan sektor telekomunikasi khususnya untuk telepon kabel, juga menyadarinya dan berupaya untuk meningkatkan pelayanan kepada pelanggan. Penelitian ini bertujuan membuat suatu basis data spasial dan model sistem informasi jaringan telepon PT. Telkom yang interaktif dengan memanfaatkan citra Quickbird yang bersumber dari Google Earth, Global Positiong System (GPS) dan Sistem Informasi Geografis (SIG) untuk penentuan rute optimal penanganan gangguan jaringan telepon PT. Telkom berdasarkan Algoritma Floyd-Warshall. Penentuan rute optimal didasarkan atas variabel impedensi, berupa jarak tempuh dan waktu tempuh yang diturunkan dari panjang jalan dibagi dengan kecepatan rata-rata kendaraan per ruas jalan. Hasil penelitian ini berupa Sistem Informasi Rute Optimal Telkom Bantul (SIROTOL) yang berbasis dekstop dan dapat berdiri sendiri tanpa adanya software SIG yang lain. Rute optimal program SIROTOL mampu digunakan untuk menentukan rute optimal penanganan gangguan jaringan telepon PT. Telkom Bantul dengan hasil yang akurat atau mendekati kondisi di lapangan. Hal tersebut dibuktikan dengan hasil validasi lapangan yang memiliki nilai uji akurasi rute optimal berdasarkan jarak tempuh sebesar 97.06% dan nilai uji akurasi rute optimal berdasarkan waktu tempuh sebesar 96.14%. ABSTRACTNowdays, many providers are emerging in Indonesia so that they lead high competition among telecommunication operators. As a state owned company that has authorities on the development of telecommunications sector, especially for cables telephone, PT. TELKOM also realize that, so they strive for a better service to the customers.This research aims to create a spatial database and interactive telephone network information system model of PT. Telkom by using Quickbird imagery derived from Google Earth, Global Position System (GPS) and Geographical Information Systems (GIS) to determine the optimal route telephone network for error handling based on Floyd-Warshall algorithm. Determination of the optimal route is based on the variable impedance of the travel distance and travel time derived from the length of road divided by the average speed of vehicles per road segment. Subsequent tissue analysis results are integrated with GPS navigation technology to help a network technician search for location of interference and network technicians to assist the movement towards the location of the phone to crash in the field. The result of the research is Telkom Bantul Optimal Route Information System (SIROTOL) desktop based and stand alone application. SIROTOL optimal route program can be applied to determine the optimal route accurately on Telkom Bantul’s error handling or at least close to field conditions. It can be proved by field validation results which resulted in accurate optimal route test value based on travel distance of 97.06% and travel time of 96.14%.Keywords: optimal route, network analysis, Floyd-Warshall algorithm, telephone network

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Akbar, Z., Z. B. Hasanuddin, and A. E. U. Salam. "Automatic buoy system for position control based on global positioning system (GPS)." IOP Conference Series: Materials Science and Engineering 885 (August 6, 2020): 012024. http://dx.doi.org/10.1088/1757-899x/885/1/012024.

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Md Din, Marina, Norziana Jamil, Jacentha Maniam, and Mohamad Afendee Mohamed. "Indoor positioning: technology comparison analysis." International Journal of Engineering & Technology 7, no. 2.14 (April 6, 2018): 133. http://dx.doi.org/10.14419/ijet.v7i2.14.12813.

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A system that allows users to find and track a specific position is known as positioning system. Global Positioning System (GPS) is one of top known position tracking system that commonly used to find position and location of object outdoor. Tracking an object indoor using GPS is not highly recommended because the signals transmitted through a satellite to a device indoor gets blocked and resulted in weak signals. Thus, an indoor positioning system (IPS) that tracks and positions object indoor has been implemented to overcome the issues of signals multipath that resulted from GPS. The aim of this paper is to provide up to date indoor positioning technologies and compares the technologies according to its technical perspectives.

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de Francisco Ortiz, Óscar, Irene Ortiz, and Antonio Bueno. "New Global Referencing Approach in a Camera-LCD Micro Positioning System." Sensors 20, no. 7 (April 9, 2020): 2118. http://dx.doi.org/10.3390/s20072118.

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In any precision manufacturing process, positioning systems play a very important role in achieving a quality product. As a new approach to current systems, camera-LCD positioning systems are a new technology that can provide substantial improvements enabling better accuracy and repeatability. However, in order to provide stability to the system a global positioning system is required. This paper presents an improvement of a positioning system based on the treatment of images on an LCD in which a new algorithm with absolute reference has been implemented. The method is based on basic geometry and linear algebra applied to computer vision. The algorithm determines the spiral center using an image taken at any point. Consequently, the system constantly knows its position and does not lose its reference. Several modifications of the algorithm are proposed and compared. The simulation and test of the algorithm provide an important improvement in the reliability and stability of the positioning system providing errors of microns for the calculation of the global position used by the algorithm.

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Arora, Rupish, Asmita Gautam, and Shilpa Sahni. "Global Positioning System." International Journal of Computer Trends and Technology 46, no. 2 (April 25, 2017): 80–83. http://dx.doi.org/10.14445/22312803/ijctt-v46p116.

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England, P. C. "Global positioning system." Journal of Structural Geology 15, no. 7 (July 1993): 945. http://dx.doi.org/10.1016/0191-8141(93)90191-c.

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Sreenivasan, S. V., and K. J. Waldron. "A Drift-Free Navigation System for a Mobile Robot Operating on Unstructured Terrain." Journal of Mechanical Design 116, no. 3 (September 1, 1994): 894–900. http://dx.doi.org/10.1115/1.2919466.

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The orientation and the angular rates of the body of a robotic vehicle are required for the guidance and control of the vehicle. In the current robotic systems these quantities are obtained by the use of inertial sensing systems. Inertial sensing systems involve drift errors which can be significant even after the vehicle has traversed only short distances on the terrain. A different approach is suggested here which guarantees accurate, drift-free sensing of the angular position and rates of the vehicle body. A camera system consisting of two cameras in fixed relationship to one another is made to continuously track two stationary objects (stars or the sun). The camera system is mounted on the vehicle body through an actuated three-degree-of-freedom joint. The angular positions and rates of these joints can be used to evaluate the angular positions and rates of the vehicle body. An estimate of the absolute position of the vehicle on the terrain can also be obtained from this sensing system. This can serve as the primary system for estimating the position of a vehicle on a planet, or as an inexpensive alternative/backup to a more accurate Global Positioning System (GPS) for estimating the position of a vehicle on earth.

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Verma, Reshma, Lakshmi Shrinivasan, and K. Shreedarshan. "GPS/INS Integration During GPS Outages Using Machine Learning Augmented with Kalman Filter." WSEAS TRANSACTIONS ON SYSTEMS AND CONTROL 16 (May 26, 2021): 294–301. http://dx.doi.org/10.37394/23203.2021.16.25.

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Nowadays a tremendous progress has been witnessed in Global Positioning System (GPS) and Inertial Navigation System (INS). The Global Positioning System provides information as long as there is an unobstructed line of sight and it suffers from multipath effect. To enhance the performance of an integrated Global Positioning System and Inertial Navigation System (GPS/INS) during GPS outages, a novel hybrid fusion algorithm is proposed to provide a pseudo position information to assist the integrated navigation system. A new model that directly relates the velocity, angular rate and specific force of INS to the increments of the GPS position is established. Combined with a Kalman filter the hybrid system is able to predict and estimate a pseud GPS position when GPS signal is unavailable. Field test data are collected to experimentally evaluate the proposed model. In this paper, the obtained GPS/INS datasets are pre-processed and semi-supervised machine learning technique has been used. These datasets are then passed into Kalman filtering for the estimation/prediction of GPS positions which were lost due to GPS outages. Hence, to bridge out the gaps of GPS outages Kalman Filter plays a major role in prediction. The comparative results of Kaman filter and extended Kalman filter are computed. The simulation results show that the GPS positions have been predicted taking into account some factors/measurements of a vehicle, the trajectory of the vehicle, the entire simulation was done using Anaconda (Jupyter Notebook).

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Filić, Mia, Renato Filjar, and Marko Ševrović. "Expression of GNSS Positioning Error in Terms of Distance." PROMET - Traffic&Transportation 30, no. 3 (July 2, 2018): 305–10. http://dx.doi.org/10.7307/ptt.v30i3.2304.

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This manuscript analyzes two methods for Global Navigation Satellite System positioning error determination for positioning performance assessment by calculation of the distance between the observed and the true positions: one using the Cartesian 3D rectangular coordinate system, and the other using the spherical coordinate system, the Cartesian reference frame distance method, and haversine formula for distance calculation. The study shows unresolved issues in the utilization of position estimates in geographical reference frame for GNSS positioning performance assessment. Those lead to a recommendation for GNSS positioning performance assessment based on original WGS84-based GNSS position estimates taken from recently introduced data access from GNSS software-defined radio (SDR) receivers.

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Herring, Thomas A., Danan Dong, and Robert W. King. "Sub-milliarcsecond determination of pole position using Global Positioning System data." Geophysical Research Letters 18, no. 10 (October 1991): 1893–96. http://dx.doi.org/10.1029/91gl02306.

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Bhushana Rao, G. Sasi. "Ionospheric Delay Estimation for Improving the Global Positioning System Position Accuracy." IETE Journal of Research 54, no. 1 (January 2008): 23–29. http://dx.doi.org/10.1080/03772063.2008.10876178.

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Rico-González, Markel, José Pino-Ortega, Fabio Y. Nakamura, Felipe Arruda Moura, Daniel Rojas-Valverde, and Asier Los Arcos. "Past, present, and future of the technological tracking methods to assess tactical variables in team sports: A systematic review." Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology 234, no. 4 (July 1, 2020): 281–90. http://dx.doi.org/10.1177/1754337120932023.

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The main aim of this work was to review the use of technological tracking methods to assess collective spatial-positioning variables in team sports. Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines and PICO design for systematic reviews, study identification was performed in four databases (PubMed, SPORTDiscus, ProQuest Central, and Web of Science). Articles were selected if they focused on player position and technological tracking methods. After duplicate removal, 2194 articles were identified based on the established search criteria, of which 72 articles were selected and analysed. Semi-automatic optic-based systems, Global Positioning System/Global Navigation Satellite Systems, and local positioning systems were used in 60%, 33% and 7% of the studies, respectively. All studies that measured tactical variables by local positioning system technology in team sports used local position measurement technology. Optic-based systems were used more often in the early years to analyse collective tactical behaviour during competition. Later, Global Positioning System/Global Navigation Satellite Systems became more frequent to measure behaviour in team sports during the training process. The possibility of using the same system during competition and training will facilitate the assessment of collective tactical behaviour in team sports.

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Chang, Yu-Ming, Chiung-Pei Chu, and Min-Yuan Ma. "The Quantitative Analysis of Display Sizes and Positions of In-Vehicle Global Positioning System Sensor Systems." Sensor Letters 12, no. 9 (September 1, 2014): 1433–38. http://dx.doi.org/10.1166/sl.2014.3359.

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Zou, Deyue, Shutong Niu, Shuhao Chen, Binhong Su, Xinyi Cheng, Jie Liu, Yunfeng Liu, and Yang Li. "A smart city used low-latency seamless positioning system based on inverse global navigation satellite system technology." International Journal of Distributed Sensor Networks 15, no. 9 (September 2019): 155014771987381. http://dx.doi.org/10.1177/1550147719873815.

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People have to move between indoor and outdoor frequently in city scenarios. The global navigation satellite system signal cannot provide reliable indoor positioning services. To solve the problem, this article proposes a seamless positioning system based on an inverse global navigation satellite system signal, which can extend the global navigation satellite system service into the indoor scenario. In this method, a signal source is arranged at a key position in the room, and the inverse global navigation satellite system signal is transmitted to the global navigation satellite system receiver to obtain a preset positioning result. The indoor positioning service is continued with the inertial navigation system after leaving the key position. The inverse global navigation satellite system seamless positioning system proposed in this article can unify indoor and outdoor positioning using the same receiver. The receiver does not need to re-receive navigation information when the scene changes, which avoids the switching process. Through the design of signal layer coverage, the receiver is in a warm start state, and the users can quickly fix the position when the scenario changes, realizing quick access in a true sense. This enables the ordinary commercial global navigation satellite system receiver to obtain indoor positioning capability without modification, and the algorithm can perform accurate positioning indoors and outdoors without switching.

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Zhang, Hongjuan, Wenzhuo Li, Chuang Qian, and Bijun Li. "A Real Time Localization System for Vehicles Using Terrain-Based Time Series Subsequence Matching." Remote Sensing 12, no. 16 (August 13, 2020): 2607. http://dx.doi.org/10.3390/rs12162607.

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Global Navigation Satellite Systems (GNSSs) are commonly used for positioning vehicles in open areas. Yet a GNSS frequently encounters loss of lock in urban areas. This paper presents a new real-time localization system using measurements from vehicle odometer data and data from an onboard inertial measurement unit (IMU), in the case of lacking GNSS information. A Dead Reckoning model integrates odometer data, IMU angular and velocity data to estimate the rough position of the vehicle. We then use an R-Tree structured reference road map of pitch data to boost spatial search efficiency. An optimized time series subsequence matching method matches the measured pitch data and the stored pitch data in reference road map for more accurate position estimation. The two estimated positions are fused using an extended Kalman filter model for final localization. The proposed localization system was tested for computational complexity with a median runtime of 12 ms, and for positioning accuracy with a median position error of 0.3 m.

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Lindqwister, Ulf J., Adam P. Freedman, and Geoffrey Blewitt. "Daily estimates of the Earth's pole position with the global positioning system." Geophysical Research Letters 19, no. 9 (May 4, 1992): 845–48. http://dx.doi.org/10.1029/92gl00576.

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Barnard, M. E. "The Global Positioning System." IEE Review 38, no. 3 (1992): 99. http://dx.doi.org/10.1049/ir:19920043.

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McNeff, J. G. "The global positioning system." IEEE Transactions on Microwave Theory and Techniques 50, no. 3 (March 2002): 645–52. http://dx.doi.org/10.1109/22.989949.

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Walton, Alan J., and Richard J. Black. "The global positioning system." Physics Education 34, no. 1 (January 1999): 37–42. http://dx.doi.org/10.1088/0031-9120/34/1/019.

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Herring, Thomas A. "The Global Positioning System." Scientific American 274, no. 2 (February 1996): 44–50. http://dx.doi.org/10.1038/scientificamerican0296-44.

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Mehl, Horst. "GPS - Global Positioning System." Informatik-Spektrum 19, no. 1 (February 21, 1996): 33–34. http://dx.doi.org/10.1007/s002870050014.

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Olivart i Llop, J. M., D. Moreno-Salinas, and J. Sánchez. "Full Real-Time Positioning and Attitude System Based on GNSS-RTK Technology." Sustainability 12, no. 23 (November 24, 2020): 9796. http://dx.doi.org/10.3390/su12239796.

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An accurate positioning and attitude computation of vehicles, robots, or even persons is of the utmost importance and critical for the success of many operations in multiple commercial, industrial, and research areas. However, most of these positioning and attitude systems rely on inertial measurement units that must be periodically recalibrated and have a high cost. In the present work, the design of a real-time positioning and attitude system using three positioning sensors based on the GNSS-RTK technology is presented. This kind of system does not need recalibration, and it allows one to define the attitude of a solid by only computing the position of the system in the global reference system and the three angles that the relative positions of the GNSS antennas define with respect to the principal axes of the solid. The position and attitude can be computed in real time for both static and dynamic scenarios. The only limitation of the system is that the antennas need to be in open air to work at full performance and accuracy. All the design phases are covered in the prototype construction: requirement definition, hardware selection, software design, assembly, and validation. The feasibility and performance of the system were tested in both static and dynamic real scenarios.

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Wilkinson, Mark E., and Daniel V. McGehee. "Auditory Global Positioning System and Advanced Driver Assistance Systems." Optometry and Vision Science 96, no. 2 (February 2019): 130–32. http://dx.doi.org/10.1097/opx.0000000000001326.

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Bullard, Randall, John Colombi, and G. Richard Freeman. "KR03 Global Positioning System (GPS) Systems Engineering Case Study." INCOSE International Symposium 18, no. 1 (June 2008): 1430–36. http://dx.doi.org/10.1002/j.2334-5837.2008.tb00889.x.

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Iqbal, Umar, Tashfeen B. Karamat, Aime F. Okou, and Aboelmagd Noureldin. "Experimental Results on an Integrated GPS and Multisensor System for Land Vehicle Positioning." International Journal of Navigation and Observation 2009 (June 23, 2009): 1–18. http://dx.doi.org/10.1155/2009/765010.

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Global position system (GPS) is being widely used in land vehicles to provide positioning information. However, in urban canyons, rural tree canopies, and tunnels, the GPS satellite signal is usually blocked and there is an interruption in the positioning information. To obtain positioning solution during GPS outages, GPS can be augmented with an inertial navigation system (INS). However, the utilization of full inertial measurement unit (IMU) in land vehicles could be quite expensive despite the use of the microelectromechanical system (MEMS)-based sensors. Contemporary research is focused on reducing the number of inertial sensors inside an IMU. This paper explores a multisensor system (MSS) involving single-axis gyroscope and an odometer to provide full 2D positioning solution in denied GPS environments. Furthermore, a Kalman filter (KF) model is utilized to predict and compensate the position errors of the proposed MSS. The performance of the proposed method is examined by conducting several road tests trajectories using both MEMS and tactical grade inertial sensors. It was found that by using proposed MSS algorithm, the positional inaccuracies caused by GPS signal blockages are adequately compensated and resulting positional information can be used to steer the land vehicles during GPS outages with relatively small position errors.

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Elipot, Shane, Luca Centurioni, Bruce J. Haines, Rick Lumpkin, and Josh K. Willis. "Measuring Global-Mean Sea-Level Rise With Surface Drifting Buoys." Marine Technology Society Journal 55, no. 3 (May 1, 2021): 66–67. http://dx.doi.org/10.4031/mtsj.55.3.12.

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Abstract We propose to establish a new ocean observing system for monitoring global and regional mean sea-level changes. This system will consist of a global array of thousands of water-following drifting buoys tracked by a global navigation satellite system—such as the Global Positioning System (GPS)—which will continuously provide the geographical positions and the height of the sea surface along the buoys' trajectories. The sea-level height data collected in this way, averaged over regional basins and the global ocean, will provide daily measures of regional and global mean sea levels. An essential climate variable, mean sea level is an intrinsic measure of climate change, integrating the thermal expansion of the ocean's waters and additions to the ocean's mass from melting terrestrial ice. The realization of this new system requires that standardized vertical position measurements with controlled accuracy be acquired and regularly transmitted from relatively small and expendable drifting buoys, which constitutes a technological challenge, yet one with a clear path for being met. The development and implementation of this ocean shot concept will ultimately provide an independent, resilient, sustainable, and economical observational system to quantify natural and anthropogenic sea-level changes, augmenting the existing satellites and tide gauge observing systems.

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Choi, Hokyung, and Taegyu Kim. "The relationship between global positioning system variables and injury occurrences in female field hockey." Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology 234, no. 4 (July 16, 2020): 291–97. http://dx.doi.org/10.1177/1754337120938592.

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The noncontact and soft-tissue injuries to lower extremities that occur as a result of excessive running loads are largely preventable. This study investigated the relationship between global positioning system variables and noncontact soft-tissue injuries in female field hockey players based on their position on the field. Fifty-two players enrolled in the Korea National Team were monitored using global positioning system units in game-based training and competitions. The measurements obtained were total distance covered, high-intensity running distance, work–rest ratio, meters per minute, repeated high-intensity effort bouts, maximal velocity, and acceleration and deceleration bouts. Noncontact soft-tissue injuries in lower extremities were documented throughout the same period. For measuring the absolute external workload of each global positioning system variable, players’ data were averaged for 1- and 4-week periods before they were injured (injury-related block), averaging values across 1 and 4 weeks before the injury-related block (non-injury block), as well as averaging values from the beginning of the data collection to the point of injury (total average). These blocks were compared to each other and to the corresponding total averages for the 1- and 4-week periods, depending on their position on the field. Of the 52 players, 28 players (8 forwards, 11 midfielders, and 9 defenders) injured their lower extremities for a total of 38 injuries. Of these injuries, 11 occurred in forwards, 17 occurred in midfielders, and 10 occurred in defenders with some players experiencing more than one injury. Different positions on the field have different global positioning system variables related to the occurrence of noncontact soft-tissue injuries in lower extremities, but there was a significant difference in global positioning system variable of injury-related block for only the 4-week period among their position on the field. Especially, increases in high-intensity running distance and repeated high-intensity effort bouts of defenders during the 4-week period were significantly related to the occurrence of injuries. To decrease the risk of injury in female field hockey players, different global positioning system variables should be monitored and modified in planned future training or competitions.

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Gu, Yanlei, Li-Ta Hsu, and Shunsuke Kamijo. "Vehicle Localization Based on Global Navigation Satellite System Aided by Three-Dimensional Map." Transportation Research Record: Journal of the Transportation Research Board 2621, no. 1 (January 2017): 55–61. http://dx.doi.org/10.3141/2621-07.

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Accurate vehicle localization technologies are significant for current onboard navigation systems and future autonomous vehicles. More specifically, positioning accuracy is expected at the submeter level. This paper presents an accurate vehicle self-localization system and evaluates the proposed system in different classes of urban environments. The developed system adopts an innovative global navigation satellite system (GNSS) positioning method as the key technique. The GNSS positioning method can improve the positioning error by reducing the effects of multipath interference and non-line-of-sight errors with the aid of a three-dimensional map. To improve positioning accuracy further, the vehicle localization system integrates the GNSS positioning technique with inertial sensors and vision sensors by considering the characteristics of each sensor. The inertial sensors represent vehicle movement with heading direction and vehicle speed. The vision sensor is used to recognize the position change relative to lane markings on the road surface. Those techniques and sensors collaborate to provide an accurate position in the global coordinate system. To verify the effectiveness and stability of the proposed system, a series of tests was conducted in one of the most challenging urban cities, Tokyo. The experiment results demonstrate that the proposed system can achieve submeter accuracy for the positioning error mean and has a 90% correct lane rate in the localization.

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Sugiura, Akihiko, and Takuya Shoji. "A Pedestrian Navigation System Using Cellular Phone Video-Conferencing Functions." International Journal of Vehicular Technology 2012 (December 31, 2012): 1–8. http://dx.doi.org/10.1155/2012/945365.

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A user’s position-specific field has been developed using the Global Positioning System (GPS) technology. To determine the position using cellular phones, a device was developed, in which a pedestrian navigation unit carries the GPS. However, GPS cannot specify a position in a subterranean environment or indoors, which is beyond the reach of transmitted signals. In addition, the position-specification precision of GPS, that is, its resolution, is on the order of several meters, which is deemed insufficient for pedestrians. In this study, we proposed and evaluated a technique for locating a user’s 3D position by setting up a marker in the navigation space detected in the image of a cellular phone. By experiment, we verified the effectiveness and accuracy of the proposed method. Additionally, we improved the positional precision because we measured the position distance using numerous markers.

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Siejka, Zbigniew. "Validation of the Accuracy and Convergence Time of Real Time Kinematic Results Using a Single Galileo Navigation System." Sensors 18, no. 8 (July 25, 2018): 2412. http://dx.doi.org/10.3390/s18082412.

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For the last two decades, the American GPS and Russian GLONASS were the basic systems used in global positioning and navigation. In recent years, there has been significant progress in the development of positioning systems. New regional systems have been created, i.e., the Japanese Quasi-Zenith Satellite System (QZSS) and Indian Regional Navigational Satellite System (IRNSS). A plan to build its own regional navigation system named Korean Positioning System (KPS) was announced South Korea on 5 February 2018. Currently, two new global navigation systems are under development: the European Galileo and the Chinese BeiDou. The full operability of both systems by 2020 is planned. The paper deals with a possibility of determination of the user’s position from individual and independent global navigation satellite system (GNSS). The article is a broader concept aimed at independent determination of precise position from individual GPS, GLONASS, BeiDou and Galileo systems. It presents real time positioning results (Real Time Kinematic-RTK) using signals from Galileo satellites only. During the test, 14 Galileo satellites were used and the number of simultaneously observed Galileo satellites varied from five to seven. Real-time measurements were only possible in certain 24-h observation windows. However, their number was completed within 6 days at the end of 2017 and beginning of 2018, so there was possible to infer about the current availability, continuity, convergence time and accuracy of the RTK measurements. In addition, the systematic errors were demonstrated for the Galileo system.

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Nikiforov, Igor V. "New optimal approach to Global Positioning System/Differential Global Positioning System integrity monitoring." Journal of Guidance, Control, and Dynamics 19, no. 5 (September 1996): 1023–33. http://dx.doi.org/10.2514/3.21741.

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Aguilar, David P., Sean J. Barbeau, Miguel A. Labrador, Alfredo J. Perez, Rafael A. Perez, and Philip L. Winters. "Quantifying Position Accuracy of Multimodal Data from Global Positioning System–Enabled Cell Phones." Transportation Research Record: Journal of the Transportation Research Board 1992, no. 1 (January 2007): 54–60. http://dx.doi.org/10.3141/1992-07.

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Ясюкевич, Юрий, Yury Yasyukevich, Артем Веснин, Artem Vesnin, Наталья Перевалова, and Natalia Perevalova. "SibNet — Siberian Global Navigation Satellite System Network: Current state." Solar-Terrestrial Physics 4, no. 4 (December 21, 2018): 63–72. http://dx.doi.org/10.12737/stp-44201809.

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In 2011, ISTP SB RAS began to deploy a routinely operating network of receivers of global navigation satellite system signals. To date, eight permanent and one temporal sites in the Siberian region are operating on a regular basis. These nine sites are equipped with 12 receivers. We use nine multi-frequency multi-system receivers of Javad manufacturer, and three specialized receivers NovAtel GPStation-6 designed to measure ionospheric phase and amplitude scintillations. The deployed network allows a wide range of ionospheric studies as well as studies of the navigation system positioning quality under various heliogeophysical conditions. This article presents general information about the network, its technical characteristics, and current state, as well as the main research problems that can be solved using data from the network.

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Shen, Feng, and Guanghui Xu. "An Enhanced UWB-Based Range/GPS Cooperative Positioning Approach Using Adaptive Variational Bayesian Cubature Kalman Filtering." Mathematical Problems in Engineering 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/843719.

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Precise position awareness is a fundamental requirement for advanced applications of emerging intelligent transportation systems, such as collision warning and speed advisory system. However, the achievable level of positioning accuracy using global navigation satellite systems does not meet the requirements of these applications. Fortunately, cooperative positioning (CP) techniques can improve the performance of positioning in a vehicular ad hoc network (VANET) through sharing the positions between vehicles. In this paper, a novel enhanced CP technique is presented by combining additional range-ultra-wide bandwidth- (UWB-) based measurements. Furthermore, an adaptive variational Bayesian cubature Kalman filtering (AVBCKF) algorithm is proposed and used in the enhanced CP method, which can add robustness to the time-variant measurement noise. Based on analytical and experimental results, the proposed AVBCKF-based CP method outperforms the cubature Kalman filtering- (CKF-) based CP method and extended Kalman filtering- (EKF-) based CP method.

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Li, Wenyi, Gang Liu, Xiaowei Cui, and Mingquan Lu. "Feature-Aided RTK/LiDAR/INS Integrated Positioning System with Parallel Filters in the Ambiguity-Position-Joint Domain for Urban Environments." Remote Sensing 13, no. 10 (May 20, 2021): 2013. http://dx.doi.org/10.3390/rs13102013.

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As the modern navigation business evolves, demands for high-precision positioning in GNSS-challenged environments increase, and the integrated system composed of Global Navigation Satellite System (GNSS)-based Real-Time Kinematic (RTK), inertial system (INS), Light Detection and Ranging (LiDAR), etc., is accepted as the most feasible solution to the issue. For prior-map-free situations, as the only sensor with a global frame, RTK determines and maintains the global positioning precision of the integrated system. However, RTK performance degrades greatly in GNSS-challenged environments, and most of the existing integrated systems adopt loose coupling mode, which does nothing to improve RTK and, thus, prevents integrated systems from further improvement. Aiming at improving RTK performance in the RTK/LiDAR/INS integrated system, we proposed an innovative integrated algorithm that utilizes RTK to register LiDAR features while integrating the pre-registered LiDAR features to RTK and adopts parallel filters in the ambiguity-position-joint domain to weaken the effects of low satellite availability, cycle slips, and multipath. By doing so, we can improve the RTK fix rate and stability in GNSS-challenged environments. The results of the theoretical analyses, simulation experiments, and a road test proved that the proposed method improved RTK performance in GNSS-challenged environments and, thus, guaranteed the global positioning precision of the whole system.

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Gucma, Maciej. "New threat to global transport. GNSS Receiver Spoofing." Archives of Transport 35, no. 3 (September 30, 2015): 7–14. http://dx.doi.org/10.5604/08669546.1185170.

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Transport and logistics in XXI century relies on the several technical systems for assuring safe and reliable operations. One of widely used systems are satellite positioning systems, used to monitoring transport means and cargo itself. Reliability of the whole transport chain is often combined with singular reliability of satellite monitoring system. Possible threats to precise positioning of any vehicle is GNSS (Global Navigation Satellite System) deliberate interference. So called spoofing interference can mislead receiver in transport objective for reporting entirely wrong position and timing. To fight with this phenomena’s antispoofing techniques are developed. This paper will provide a review of late researches in field of GNSS anti-spoofing on the side of receiver. GNSS receiver vulnerabilities for a spoofer (device) attack will be presented as well as anti-spoofing algorithms. Possible limitation, costs as well as countermeasures methods will be shown thoroughly. Some of recent trends in anti-spoofing techniques in the world will be outlined up to date.

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Haddadi Amlashi, H., F. Samadzadegan, F. Dadrass Javan, and M. Savadkouhi. "COMPARING THE ACCURACY OF GNSS POSITIONING VARIANTS FOR UAV BASED 3D MAP GENERATION." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLIII-B1-2020 (August 6, 2020): 443–49. http://dx.doi.org/10.5194/isprs-archives-xliii-b1-2020-443-2020.

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Abstract. GNSS stands for Global Navigation Satellite System and is the standard generic term for satellite navigation systems that provide autonomous geo-spatial positioning with global coverage. The advantage of having access to multiple satellites is accuracy, redundancy, and availability at all the times. Though satellite systems do not often fail, if one fails GNSS receivers can pick up signals from other systems. If the line of sight is obstructed, having access to multiple satellites is also a benefit. GPS (Global Positioning System, USA), GLONASS (Global Navigation Satellite System, Russia), BeiDou (Compass, China), and some regional systems are positioning systems that are usually used. In recent years with the development of the UAVs and GNSS receivers, it is possible to manage an accurate PPK (Post Processing Kinematic) networks with a GNSS receiver mounted on a UAV to achieve the position of images principal points WGS1984 and to reduce the need for GCPs. But the most important challenge in a PPK task is, which a combination of different GNSS constellations would result in the most accurate computed position in checkpoints. For this purpose, this study focused on a PPK equipped UAV to map an open pit (Golgohar mine near Sirjan city). For the purpose, different combination of GPS, GLONASS and BeiDou used for position computed. Results are plotted and compared and found out having access to multiple constellations while doing a PPK task would bring higher accuracies in building photogrammetric models although it may cause some random error due to the higher values of noise while the number of the satellites increases.

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Jeong, Jae-Hoon, and Kiwon Park. "Numerical Analysis of 2-D Positioned, Indoor, Fuzzy-Logic, Autonomous Navigation System Based on Chromaticity and Frequency-Component Analysis of LED Light." Sensors 21, no. 13 (June 25, 2021): 4345. http://dx.doi.org/10.3390/s21134345.

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Topics concerning autonomous navigation, especially those related to positioning systems, have recently attracted increased research attention. The commonly available global positioning system (GPS) is unable to determine the positions of vehicles in GPS-shaded regions. To address this concern, this paper presents a fuzzy-logic system capable of determining the position of a moving robot in a GPS-shaded indoor environment by analyzing the chromaticity and frequency-component ratio of LED lights installed under the ceiling. The proposed system’s performance was analyzed by performing a MATLAB simulation of an indoor environment with obstacles. During the simulation, the mobile robot utilized a fuzzy autonomous navigation system with behavioral rules to approach targets successfully in a variety of indoor environments without colliding with obstacles. The robot utilized the x and y coordinates of the fuzzy positioning system. The results obtained in this study confirm the suitability of the proposed method for use in applications involving autonomous navigation of vehicles in areas with poor GPS-signal reception, such as in tunnels.

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Shen, Feng, Joon Wayn Cheong, and Andrew G. Dempster. "A DSRC Doppler/IMU/GNSS Tightly-coupled Cooperative Positioning Method for Relative Positioning in VANETs." Journal of Navigation 70, no. 1 (July 14, 2016): 120–36. http://dx.doi.org/10.1017/s0373463316000436.

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Relative position awareness is a vital premise for the implementation of emerging intelligent transportation systems. However, commercial Global Satellite Navigation Systems (GNSS) receivers do not satisfy the requirements of these applications. Fortunately, Cooperative Positioning (CP) systems, based on inter-vehicle communications, have improved performance of relative positioning in a Vehicular Ad Hoc Network (VANET). CP techniques rely primarily on measurements from the Global Positioning System (GPS) to deliver measurements or positions that describe the location of individual vehicles. In urban environments, the reduced quality or complete unavailability of GPS measurements challenges the effectiveness of any CP algorithm. In this paper, a new enhanced tightly–coupled CP technique is presented by adding the measurements from low-cost inertial sensors and the Doppler shift of the carrier of Dedicated Short-Range Communications (DSRC) signals. In the enhanced CP method proposed here, vehicles communicate their Inertial Measurement Unit (IMU) data and GPS measurements. Each vehicle fuses the GPS measurements and IMU data and the inter-node range-rates based on the Doppler shift of the carrier of DSRC signals. Based on analytical and experimental results, in a full GPS coverage environment, the new tight integration CP outperforms tight CP with Inertial Navigation System (INS), tight CP and differential GPS by at least by 6%, 15%, and 28%, respectively. In a GPS outage, the performance improvement can be up to 60%, 55%, and 66% respectively.

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., Haniah, and Agfianto Eko Putra. "Purwarupa Portable Global Positioning System." IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) 3, no. 1 (April 30, 2015): 105. http://dx.doi.org/10.22146/ijeis.3876.

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AbstrakTelah dibuat sebuah sistem GPS portable menggunakan receiver GPS serta tampilan LCD 128X64. Sistem ini dapat membantu pengguna untuk mengetahui posisi mereka berada agar tidak tersesat. Sistem ini menampilkan data latitude, longitude, kecepatan dan waktu yang ditampilkan pada LCD 128X64. Sehingga pengguna bisa mengetahui posisi mereka dengan melihat posisi garis lintang dan garis bujur. Sistem ini dibuat dengan menggunakan mikrokontroler ATmega32 sebagai pemroses, GPS receiver Polstar PMB-688 untuk menerima data posisi dari satelit dan LCD 128X64 sebagai penampil. Sistem yang dibuat telah mampu menampilkan posisi garis lintang, garis bujur dan kecepatan secara akurat. Deviasi rata-rata untuk GPS portabel dibanding dengan GPS garmin adalah 1,753449 m ± 0,113532 m sedangkan deviasi rata-rata untuk kecepatan adalah 0,441 km/j ± 0,247 km/j. Kata kunci— GPS, Posisi, Polstar PMB-688, Atmega32, Mikrokontroler. Abstract Has created a portable GPS system uses a GPS receiver as well as an LCD display 128X64. This system can help users to identify where they are located so as not to get lost. This system displays the latitude, longitude, speed and time are displayed on the LCD 128X64. So users can know their position by looking at the position of latitude and longitude. This system using microcontroller ATmega32 as processor, GPS receiver Polstar PMB-688 to receive position data from satellites and LCD 128X64 as a viewer. The system is already capable of showing the position of the latitude, longitude and speed accurately. Average deviation for GPS portable than static point is 1.753449 m ± 0.113532 m while the average deviation for speed is 0.441000 kmh ± 0.247000 kmh. Keywords— GPS, Position, Polstar PMB-688, Atmega32, Mikrocontroller.

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Giles, Jim. "EU plans global positioning system." Nature 410, no. 6831 (April 2001): 853. http://dx.doi.org/10.1038/35073762.

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Enge, Per. "RETOOLING the Global Positioning System." Scientific American 290, no. 5 (May 2004): 90–97. http://dx.doi.org/10.1038/scientificamerican0504-90.

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Charlton, Samuel G. "Testing the Global Positioning System." Ergonomics in Design: The Quarterly of Human Factors Applications 3, no. 4 (October 1995): 4–9. http://dx.doi.org/10.1177/106480469500300402.

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Journal articles on the topic 'Global positiong system'

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