Relevant bibliographies by topics / Topographical surveying Computer simulation

Academic literature on the topic 'Topographical surveying Computer simulation'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Topographical surveying Computer simulation"

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Gao, Caiyun, and Qiutang Wu. "Design and Practice of Surveying Experiment System based on a Virtual Platform." International Journal of Emerging Technologies in Learning (iJET) 12, no. 04 (April 28, 2017): 53. http://dx.doi.org/10.3991/ijet.v12i04.6924.

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The experimental teaching of surveying is an effective method for students to acquire basic surveying skills and solve practical problems. By contrast, the traditional experimental teaching mode of surveying presents students with insufficient experimental opportunities and difficulties to achieve independent learning and interactive operation due to limitations in the allotted time for experiments, sites, instruments, and external environmental conditions. This study developed a virtual experimental system by combining network virtual reality technology and surveying experiment. The proposed system intends to provide students with additional experimental opportunities to achieve computer desktop-like virtual experimental devices and engineering construction scenes, thereby accomplishing the indoor simulation of field surveying. This virtual surveying experimental system mainly comprised four modules, namely, classroom teaching, classroom practice, teaching practice, and production practice. This system realized equipment, operation, and data virtualizations, as well as various highly realistic measurement experiments, such as topographic surveying, engineering setting out, and road surveying. Application results demonstrated that the proposed system was convenient for the independent study of students, stimulates their enthusiasm for learning, strengthens their operational ability, and achieves good teaching effect. Furthermore, this system provides a novel experimental teaching mode for surveying courses.
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Liu, Hui, Qing Xu, Guowang Jin, and Hongmin Zhang. "MIMO Antenna Polynomial Weighted Average Design Method of Downward-Looking Array SAR." International Journal of Antennas and Propagation 2017 (2017): 1–18. http://dx.doi.org/10.1155/2017/3029847.

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MIMO antenna polynomial weighted average design method of downward-looking array SAR was proposed from the angle of surveying and mapping in this paper, in order to solve the ill-posed problem that an equivalent virtual array can be implemented by a variety of physical transmitter-receiver arrays for bistatic MIMO linear array. For wave band, resolution, elevation precision, and working height concerned by the applications of surveying and mapping, the length of equivalent virtual array and actual physical array meeting the needs of large scale topographical mapping was solved. Then array numbers and position vectors of MIMO downward-looking array SAR of real aerial mapping platform were optimized. According to this design, some simulation experiments and comparisons were processed. The results proved the rationality and effectiveness of this array configuration by comparing the differences of 3D imaging results and the original simulation scene, counting mean and standard deviation of elevation reconstruction error eliminating the influence of shadow areas, and counting the probability of elevation reconstruction error within half a resolution of the whole scene and individual building area.
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Liu, D., S. K. Dew, M. J. Brett, T. Janacek, T. Smy, and W. Tsai. "Experimental study and computer simulation of collimated sputtering of titanium thin films over topographical features." Journal of Applied Physics 74, no. 2 (July 15, 1993): 1339–44. http://dx.doi.org/10.1063/1.354889.

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Qiang, Liu, and Lin Ling. "Engineering Surveying and Mapping System Based on 3D Point Cloud and Registration Communication Algorithm." Wireless Communications and Mobile Computing 2022 (March 17, 2022): 1–12. http://dx.doi.org/10.1155/2022/4579565.

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In order to improve the effect of engineering surveying and mapping system, this paper improves the three-dimensional point cloud technology. The problem of inaccurate measurement results caused by complex terrain is solved. At the same time, an improved greedy projection triangulation communication reconstruction algorithm is proposed. That is, while homogenizing the point cloud density, the point cloud redundant point removal algorithm is used to remove the overlapping points. The registration algorithm is applied to the engineering system. Combined with the improved algorithm, the system framework of the engineering surveying and mapping system is constructed, and the system algorithm is verified by a simulation example. Finally, combined with the actual situation of engineering communication surveying and mapping, the performance verification of the system is designed and tested, the research results are counted, and the algorithm is evaluated. The system carries out engineering surveying and mapping through three-dimensional point cloud and improves the surveying and mapping accuracy through registration algorithm. The engineering surveying and mapping system based on three-dimensional point cloud and registration algorithm proposed in this paper has high accuracy and can meet the needs of practical engineering. The system solves the problem of inaccurate measurement results caused by complex terrain, complex terrain, and complex terrain.
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Wibawanto, Hilmawan, Roemintoyo Roemintoyo, and Triana Rejekiningsih. "Simulation-based interactive multimedia to improve vocational students' learning outcomes." World Journal on Educational Technology: Current Issues 14, no. 6 (November 28, 2022): 1927–42. http://dx.doi.org/10.18844/wjet.v14i6.8363.

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Learning media supporting practical learning in vocational high school (VHS) is urgent during the COVID-19 pandemic. All VHS competencies, including land surveying techniques, cannot support students with the existing online learning facilities. This study explained the development and impact of using multimedia simulation on the learning outcomes of VHS students. The Alessi and Trollip development model with planning, design, and development phases were used to create the multimedia simulation. The participants in this research included teachers, students, material experts, and media experts. The pre-test and post-test of practical learning outcomes, as well as questionnaires, are selected to collect research data. The results based on the experts’ and teachers’ validation, and students’ assessment indicated that the multimedia simulation was 'feasible' to be used in practical learning. Based on students’ post-test results, the average score in the experimental class increased more than the average score in the control class. These findings suggested that learning land surveying techniques using multimedia simulation is more effective than classes without using multimedia simulation. Teachers and educational researchers might use this study as an example for creating learning materials to raise the standard of instruction in VHSs. Keywords: multimedia, simulation, learning outcomes, practical learning, vocational
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Elter, Patrick, Regina Lange, R. Thull, and Ulrich Beck. "Protein Adsorption on Topographically Structured Surfaces: A Mesoscopic Computer Simulation for the Prediction of Prefered Adsorption Sites." Materials Science Forum 638-642 (January 2010): 542–47. http://dx.doi.org/10.4028/www.scientific.net/msf.638-642.542.

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In this study the influence of edges and spikes of a topographical nanostructure on the adsorption behavior of proteins at a solid-liquid interface is examined by a computer simulation. An algorithm has been developed, which combines a Finite Differences field calculation with Brownian Dynamics. A (16 nm)3 nano-cube with sharp edges as well as flat faces was chosen as model system and the adsorption of Hen Egg White Lysozyme was investigated. An increased adsorption rate along the edges of a the model cube is reached in the initial adsorption phase under consideration of electrostatic and dispersion interactions. At later times also the surfaces of the cube are covered, if the salt concentration is sufficient to screen the repelling protein-protein electrostatic interaction.
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Barliba, Livia Luminita, Costel Barliba, and Gabriel Eles. "Use of a digital information system to achive a topographical embossed plan in Farcasesti village, Gorj county." Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Horticulture 73, no. 2 (November 30, 2016): 304. http://dx.doi.org/10.15835/buasvmcn-hort:12275.

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The purpose of this paper is to obtain thematic maps and topographic analyzes determined on the field and processed through the basic programs of AutoCAD, TopoLT and Global Mapper which along with topogeodezical details high up in on the field create a database required to implement a feasibility study, as a previous step of the general cadastre in the Farcasesti village, Gorj county.Topographical surveying were made with GNSS technology using the RTK-Kinematic method, South V-82 type in Real Time and data processing was performed by specialized graphics programs.Field data collected with GPS RTK were transferred to a computer using specialized software LeicaGeo Combined Office and other software like Notepad, Excel, Word, AutoCad 2013. The imported data from the field in three spatial coordinates, respectively X, Y and Z, were the basis for drawing up planimetric situation plans by outlining the details of the terrain and elevation.In the present paper, we demonstrate that the use of GPS technology made possible topogeodezical data collection from a large area with high precision in a short time using reduced material and human resources. This allowed us to import data from the field by using topogeodezical specialized programs and accurately achieve the outlines of buildings and perimeter, as verified by superimposing them on orthophotomap. Achieving digital plans using AutoCAD Architectural demonstrated that they can be made with accuracy and precision permitting various analyzes of land, including the construction of contour in 2D and 3D.
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Awang Ali, Awang Nasrizal, and Junaidah Ariffin. "Model Reliability Assessment: A Hydrodynamic Modeling Approach for Flood Simulation in Damansara Catchment Using InfoWorks RS." Advanced Materials Research 250-253 (May 2011): 3769–75. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.3769.

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This paper presents the flood inundation model using a hydrodynamic approach for flood simulation. A Digital Elevation Model (DEM) for Damansara Catchment was developed and integrated into the InfoWorks River Simulation (RS) program. Hydrographic surveying activity was carried out to collect existing Damansara River cross-section. The 3D flood model was calibrated using the 26th February 2006 and 15th October 2008 flooding event data. The model was validated using the flooding event on 21st March 2007. This computer simulation results produced hydrograph that indicates the capability of the model in dealing with regional flood analysis for future usage in designing structural flood measures.
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Lin, Tzu-Jui, and Karl A. Stol. "Autonomous Surveying of Plantation Forests Using Multi-Rotor UAVs." Drones 6, no. 9 (September 16, 2022): 256. http://dx.doi.org/10.3390/drones6090256.

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Modern plantation forest procedures still rely heavily on manual data acquisition in the inventory process, limiting the quantity and quality of the collected data. This limitation in collection performance is often due to the difficulty of traversing the plantation forest environment on foot. This work presents an autonomous system for exploring plantation forest environments using multi-rotor UAVs. The proposed method consists of three parts: waypoint selection, trajectory generation, and trajectory following. Waypoint selection is accomplished by estimating the rows’ locations within the environment and selecting points between adjacent rows. Trajectory generation is completed using a non-linear optimization-based constant speed planner and the following is accomplished using a model predictive control approach. The proposed method is tested extensively in simulation against various procedurally generated forest environments, with results suggesting that it is robust against variations within the scene. Finally, flight testing is performed in a local plantation forest, demonstrating the successful application of our proposed method within a complex, uncontrolled environment.
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Liao, Shifang, Manzhu Ye, Rongcai Yuan, and Wanzhi Ma. "Unmanned Aerial Vehicle Surveying and Mapping Trajectory Scheduling and Autonomous Control for Landslide Monitoring." Journal of Robotics 2022 (March 24, 2022): 1–13. http://dx.doi.org/10.1155/2022/2365006.

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Real-time and efficient monitoring of geological disasters has received extensive attention in the application of UAV surveying and mapping control technology. The application of traditional landslide monitoring methods lacks the accuracy of control algorithms, which has become a hot issue currently facing. Based on the landslide surface subsidence monitoring method, this article designs the UAV trajectory scheduling subsidence monitoring software, which can monitor the UAV’s flight status and navigation information, and draw the flight trajectory in real time. At the same time, the model solves the problem of storage and management of landslide inspection results by the landslide inspection management system, and realizes the functions of entering and querying landslide information, viewing inspection results, landslide safety judgment, generating reports, and autonomous control. The simulation results show that the global accuracy reaches 0.975, and the algorithm recognition degree reaches 99.8%, which promotes the reliability of the landslide monitoring data for the identification of the surveying and mapping trajectory, and provides a decision-making basis for landslide treatment.
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Dissertations / Theses on the topic "Topographical surveying Computer simulation"

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HUANG, ZHI-MIN, and 黃志銘. "Interactive computer graphics in topographical simulation." Thesis, 1986. http://ndltd.ncl.edu.tw/handle/12841285463290477175.

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Books on the topic "Topographical surveying Computer simulation"

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Eckes, Konrad. Rzutowanie swobodne elementów przestrzennej bazy danych topograficznych z wykorzystaniem interakcyjnej grafiki komputerowej. Kraków: Akademia Górniczo-Hutnicza im. S. Staszica w Krakowie, 1989.

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Richards, Thomas. A predictive model of Aboriginal archaeological site distribution in the Otway Range. [Melbourne]: Aboriginal Affairs Victoria, 1998.

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3D recording and modelling in archaeology and cultural heritage: Theory and best practices. Oxford, England: Archaeopress, 2014.

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Geological Survey (U.S.), ed. Topographic surveying using the Sokkisha Set2 electronic total station with the HP-71B computer: Jeffrey E. Lucius. [Denver, CO]: U.S. Dept. of the Interior, U.S. Geological Survey, 1997.

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Book chapters on the topic "Topographical surveying Computer simulation"

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Bulatov, Vasily, and Wei Cai. "Finding Transition Pathways." In Computer Simulations of Dislocations. Oxford University Press, 2006. http://dx.doi.org/10.1093/oso/9780198526148.003.0011.

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As was discussed in Chapter 2, stable and accurate numerical integration of the MD equations of motion demands a small time step. In MD simulations of solids, the integration step is usually of the order of one femtosecond (10−15 s). For this reason, the time horizon ofMDsimulations of solids rarely exceeds one nanosecond (10−9 s). On the other hand, dislocation behaviors of interest typically occur on time scales of milliseconds (10−3 s) or longer. Such behaviors remain out of reach for direct MD simulations. Time-scale limits of a similar nature also exist in MC simulations. For instance, the magnitude of the atomic displacements in the Metropolis algorithm has to be sufficiently small to ensure a reasonable acceptance ratio, which results in a slow exploration of the configurational space. This disparity of time scales can be traced to certain topographical features of the potential-energy function of the many-body system, typically consisting of deep energy basins separated by high energy barriers. The system spends most of its time wandering around within the energy basins (metastable states) only rarely interrupted by transitions from one basin to another. Whereas the long-term evolution of a solid results from transitions between the metastable states, direct MDand MC simulations spend most of the time faithfully tracing the unimportant fluctuations within the energy basins. In this sense, most of the computing cycles are wasted, leading to very low simulation efficiency. Because the transition rates decrease exponentially with the increasing barrier heights and decreasing temperature, this problem of time-scale disparity can be severe.
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Conference papers on the topic "Topographical surveying Computer simulation"

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Suo, Chen, Eugene McGovern, and Alan Gilmer. "UAV Data for Coastal Dune Mapping." In Environmental Engineering. VGTU Technika, 2017. http://dx.doi.org/10.3846/enviro.2017.245.

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High resolution topographic maps are critical for the development of rigorous and quantitative numerical simulation landscape models. These models can inform targeted land management actions that maintain biodiversity and ecological functions. Mapping functional vegetation communities to obtain accurate distribution and population estimates is an important element of landscape models and is a challenging task which requires a considerable investment in time and resources. A recent development in surveying technologies, Unmanned Aerial Vehicles (UAV’s), also known as drones, has enabled high resolution and high accuracy ground-based data to be gathered quickly and easily on-site. The application of UAV’s represents a new opportunity to survey relatively large areas in significantly less time compared to other on-site surveying methods, including GPS, robotic total stations and terrestrial laser scanners. The objective of this research is to use UAV technology to create topographical and vegetation mapping of coastal dune complexes with particular reference to the Brittas-Buckroney dune complex in Co. Wicklow. As the area of study site was about 60 hectares, it was divided into three sections, North, Centre and South. This paper presents the five steps to achieve the objective, setting ground control points, making an autonomous flight plan, flying the UAV for data collection, data processing and result analysis via ArcGIS. The final result, processed by specific software PIX4D, was a topographical map of the study site in the Irish Transverse Mercator coordinate system, with a resolution of 0.125 m and Root-Mean-Square (RMS) error 0.050 m. In conclusion, UAV technology provides new possibilities for mapping as it maximizes improvement of the data quality while reducing the investment in time and labour.
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Southward, Steve, Shawn Schneider, Gordon Kwong, Sajit Jumani, and Holley Conner. "Application Based Guidelines for Terrain Profile Resolution Requirements." In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-87267.

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In the modern era of vehicle design, the use of computer simulation and shaker rigs is crucial. To utilize these essential design tools, topographical measurements of appropriate terrains must be collected. While it is obvious that high-resolution data is critical for quality testing, there is no clear definition for what resolution is actually required in practice. This required level of fidelity can only be determined by considering all aspects of the end use. This paper will establish a general set of guidelines by which the required resolution can be determined to meet specific application needs. The use of these guidelines will be demonstrated through an experimental case study of a vehicle driving over a very simple terrain profile.
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