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Journal articles on the topic 'Theodolite'

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Author: Grafiati

Published: 4 June 2021

Last updated: 19 February 2022

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1

Chen, Hung-Kuei, S. Jack Hu, and T. C. Woo. "Visibility Analysis and Synthesis for Assembly Fixture Certification Using Theodolite Systems." Journal of Manufacturing Science and Engineering 123, no. 1 (August 1, 1999): 83–89. http://dx.doi.org/10.1115/1.1286055.

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In automotive sheet metal assembly, part positioning and clamping is accomplished by fixtures consisting of fixture elements, such as pins and blocks. The locations of these elements are determined during process design and need to be certified during the construction and installation of an assembly line. Usually, theodolite systems are used to certify the locations of these elements by measuring the trihedron points on the fixture elements. However, no systematic method exists for the selection and placement of measuring systems. As a result, the current certification procedure is very time-consuming and is prone to error. This paper presents an algorithm for the optimal setup and placement of theodolite systems based on visibility analysis and synthesis. For a given tooling fixture, the visibility map is introduced to represent the set of potential measurement locations when a number of fixture elements are to be measured. From the set of potential measurement locations, an optimal setup will be selected based on minimizing the number of theodolite heads by optimally locating these theodolites. This approach will minimize measurement setups and improve measurement accuracy.

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2

Feng, Wei Dong, Wen Xu, and Xian Hong Wang. "Error Analysis and Testing on Shafting Verticality for Horizontal Photoelectric Theodolite." Advanced Materials Research 791-793 (September 2013): 1002–5. http://dx.doi.org/10.4028/www.scientific.net/amr.791-793.1002.

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It is vitally important to improve effects of error compensation for horizontal photoelectric theodolite and reduce production costs by executing rational control of verticality error of shafting. This paper analyzes the mechanism how the verticality error of shafting influences measurement precision of photoelectric theodolite considering the architectural characteristics of the frame of horizontal theodolite. Matlab software has been used to simulate pointing accuracy. Verticality error of shafting of horizontal theodolite has been detected. Measured verticality error of shafting is 37 and detection error is 10. Results of analysis and detection to be applied for error compensation can improve pointing accuracy of the theodolite.

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3

Wang, Shou Yin, Jie Tang, and Hong Guang Li. "Topology Optimum Structural Design of the Pedestal in the Electro-Optical Theodolite." Applied Mechanics and Materials 365-366 (August 2013): 72–76. http://dx.doi.org/10.4028/www.scientific.net/amm.365-366.72.

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The pedestal of the theodolite is the main load-bearing part for the installation of the thrust bearings and torque motor stator, which is used to support the weight of the turntable and the pitching shaft system. So that the stiffness of it will have a direct impact on the ability of the theodolites capturing and tracking targets. In order to improve the overall theodolites tracking ability, to increase the stiffness of pedestal becomes more important. The 12 ribs were adopted topology optimization analysis by using the finite element software ANSYS. Through appropriately partitioning topology optimization elements and non-optimized elements, and setting optimization method, the structure of the model was optimized. The optimal ribs shape weve got under the condition of the largest stiffness pedestal structure, which reinforces the overall stiffness of the pedestal, and reduces the total weight.

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4

Gong, Zhi Hua, Peng Wei Duan, Xu Xu, and Hai Dong Lv. "Study on the Multi-Optical Theodolites Positioning Method Based on Function Restriction." Applied Mechanics and Materials 511-512 (February 2014): 227–33. http://dx.doi.org/10.4028/www.scientific.net/amm.511-512.227.

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Aiming at the shortcoming of the classical method of optical theodolite projection intersection named ́R ́ method and traditional data fusion method named point-by-point EMBET method, this paper advances the function restriction EMBET method which is based on multi-optical theodolites. Comparing with the three methods by simulation experiment, it demonstrates that the function restriction EMBET method has higher positioning accuracy and stronger practicability than two traditional methods. Furthermore, this method supplies the important reference value for engineering application.

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5

Arrasyid, Aro Qodam, and Kadenun Kadenun. "Perhitungan Arah Kiblat Masjid Menggunakan Teodolit di Kebonsari Madiun." AL-MANHAJ: Jurnal Hukum dan Pranata Sosial Islam 2, no. 2 (July 22, 2020): 195–215. http://dx.doi.org/10.37680/almanhaj.v2i2.479.

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Qibla direction is the direction that Muslims go to in carrying out worship, especially prayer. The determination of the Qibla direction in the Fatma Zahra, Al-Falah, and Baitul Muttaqin Mosques used to still use simple tools. Whereas in this day and age, all modern equipment already exists. From the differences of time, the writer is interested in studying the calculation of Qibla direction by using theodolite, by determining the direction of Qibla before using theodolite and after using theodolite. This research uses quantitative methods by collecting observational study data, interviews, and documentation to related parties. The primary source is data from interviews and direct research in the field. While the secondary data is taken from books, journals and theses related to this research. From the results of this study that the Mosques studied have not yet led to a perfect Qibla. The qibla direction in each Mosque is as follows: Qibla direction in Fatma Zahra Mosque is 650 35 '5.64'', in Al-Falah Mosque is 650 34' 21.17 '', and in Baitul Muttaqin Mosque is 650 35 '2.5''. from the direction of the Qibla which was originally the Fatma Zahra Mosque 610 05'11.28 '', Al-Falah Mosque 67009 '43.34'', and the Baitul Muttaqin Mosque 70057 '35.00'. Arah kiblat merupakan arah yang dituju umat Islam dalam melaksanakan ibadah khususnya shalat. Penentuan arah kiblat di masjid Fatma Zahra, Al-Falah, dan Baitul Muttaqin dulunya masih menggunakan alat yang sederhana. Sedangkan pada zaman sekarang ini, sudah zamannya modern semua peralatan canggih sudah ada. Dari perbedaan zaman tersebut penulis tertarik untuk mengkaji perhitungan arah kiblat dengan menggunakan alat theodolit, dengan menentukan arah kiblat sebelum menggunakan alat theodolit dan setelah menggunakan alat theodolit. Penelitian ini menggunakan metode kuantitatif dengan mengumpulkan data bersifat Studi Observasi, wawancara, dan dokumentasi kepada pihak-pihak terkait. Sebagai sumber primernya yaitu data dari hasil wawancara dan penelitian langsung di lapangan. Sedangkan data sekundernya diambil dari buku, jurnal, dan tesis yang berkaitan dengan penelitian ini. Dari hasil penelitian ini bahwa masjid-masjid yang diteliti belum mengarah ke kiblat secara sempurna. Adapun arah kiblat di masing-masing masjid adalah sebagai berikut: Arah kiblat di masjid Fatma Zahra ialah 650 35’ 5.64’’,di masjid Al-Falah ialah 650 34’ 21.17’’, dan di masjid Baitul Muttaqin ialah 650 35’ 2.5’’. dari arah kiblat yang semula masjid Fatma Zahra 610 05’11.28’’, masjid Al-Falah 67009’ 43.34’’, dan masjid Baitul Muttaqin 70057’35.00’’.

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6

Jian, Zhong, and Zheng Zhe. "A Video-Based Theodolite Simulation System." Advanced Materials Research 798-799 (September 2013): 272–75. http://dx.doi.org/10.4028/www.scientific.net/amr.798-799.272.

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In this paper we realized a Video-based theodolite simulation system, simulating and modeling theodolite servo control system with Simulink, build the model of theodolite movement. Split the recording video into images, and projected it onto the virtual coordinate system, then stitching images by SIFT method, the result panorama is used as background. We propose a algorithm based on gradient histogram, detect the target from the video image, then superimposed it on the background. System achieve a high degree of simulation, and reproduced the mandate process of the theodolite.

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7

Hegymegi, László, János Szöllősy, Csaba Hegymegi, and Ádám Domján. "Measurement experiences with FluxSet digital D/I station." Geoscientific Instrumentation, Methods and Data Systems 6, no. 2 (July 25, 2017): 279–84. http://dx.doi.org/10.5194/gi-6-279-2017.

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Abstract. Geomagnetic observatories use classical theodolites equipped with single-axis flux-gate magnetometers known as declination–inclination magnetometers (DIM) to determine absolute values of declination and inclination angles. This instrument and the measurement method are very reliable but need a lot of handwork and experience. The authors developed and built a non-magnetic theodolite which gives all measurement data in digital form. Use of this instrument significantly decreases the possibility of observation errors and minimises handwork. The new instrument is presented in this paper together with first measurement results in comparison to the classical DIM.

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8

Yi, Bing, Xiao Ming Zhang, Xi Jun Wang, and Zhan Fang Chen. "Component Detection Method for Measuring Precision." Applied Mechanics and Materials 681 (October 2014): 61–65. http://dx.doi.org/10.4028/www.scientific.net/amm.681.61.

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The infrared theodolite is unable to realize the practical problems of star school, put forward a set of indirect detection method for measuring accuracy of photoelectric theodolite, This method not only solves the infrared theodolite test precision,but also can be convenient for full visual field and a full range of accuracy evaluation of equipment.

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9

Sulistyo, Totok, Karmila Achmad, and Rahmad Bangun Giarto. "GEOMATICS ACCURACY AND PRECISION OF DETERMINATION HORIZONTAL DISTANCES IN STAKE OUT MEASUREMENT USING THEODOLITE." JUTEKS : Jurnal Teknik Sipil 4, no. 2 (October 1, 2019): 74. http://dx.doi.org/10.32511/juteks.v4i2.612.

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Stake-Out is a processes of transferring construction design to the real world so that Stake Out is highly imperative in a construction job. Stake-Out jobs in the middle and lower levels of construction industry are still using theodolite accompanying with calculator rather than using high-end instruments. The results of the study show that theodolite has lower accuracy compared to Total Station and other high-end instruments, such as GPS Geodetic and Laser Scanner. This research is aimed to determine the accuracy and precision of Theodolite in determining the horizontal distance of Stake Out measurement which staff reading is simulated using android App (Stake Out Guide). The results of experiment showed that the accuracy of Theodolite is 0.025 m meanwhile the precision is 0.12%.

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10

Xia, Linyuan. "From Theodolite to Satellite." Survey Review 38, no. 300 (April 2006): 446–51. http://dx.doi.org/10.1179/sre.2006.38.300.446.

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11

Sagnol, Ophélie, Femke Reitsma, Christoph Richter, and Laurence H. Field. "Correcting Positional Errors in Shore-Based Theodolite Measurements of Animals at Sea." Journal of Marine Biology 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/267917.

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Determining the position of animals at sea can be particularly difficult and yet, accurate range and position of animals at sea are essential to answer a wide range of biological questions. Shore-based theodolite techniques have been used in a number of studies to examine marine mammal movement patterns and habitat use, offering reliable position measurements. In this study we explored the accuracy of theodolite measurements by comparing positional information of the same objects using two independent techniques: a shore-based theodolite station and an onboard GPS over a range of 25 km from the shore-based station. The technique was developed to study the habitat use of sperm whales (Physeter macrocephalus) off Kaikoura, New Zealand. We observed that the position accuracy fell rapidly with an increase in range from the shore-based station. Results showed that the horizontal angle was accurately determined, but this was not the case for the vertical angle. We calibrated the position of objects at sea with a regression-based correction to fit the difference in distance between simultaneously recorded theodolite fixes and GPS positions. This approach revealed the necessity to calibrate theodolite measurements with objects at sea of known position.

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12

Ge, Bing, and Yi Yu. "Application of Multi-Sensors Data Fusion Technology in the Theodolite Tracking System." Applied Mechanics and Materials 392 (September 2013): 783–86. http://dx.doi.org/10.4028/www.scientific.net/amm.392.783.

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The task of multi-sensors data fusion technology is to obtain more precise estimate of object state and light path than single sensor through dealing with the information from different sensors. The paper puts forward the ideal of applying the data fusion theory to O-E theodolite system, based on the data fusion theory and Kalman filter and estimate theory. At the condition of losing and covering object, the theodolite tracks object normally. The theory of multi-sensors data fusion is validated improving acquiring and tracking ability of the theodolite effectively in practice.

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13

Li, Miao, and Hui Bin Gao. "Tracking Error Estimate for Theodolite Based on General Regression Neural Network." Advanced Materials Research 472-475 (February 2012): 1383–87. http://dx.doi.org/10.4028/www.scientific.net/amr.472-475.1383.

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To efficiently evaluate the tracking index of theodolite ,as well as avoiding influence resulted from higher harmonics when used opto dynamic target and use equivalent sine to evaluate the tracking index, in this paper, we resorted to General Regression Neural Network to do the new research on theodolite tracking accuracy evaluation method. Experimental results indicate that the method realized the equivalent sine to evaluate the tracking index of theodolite and avoided the higher harmonics influence with opto dynamic target. The research in this paper has important value to the engineering practice.

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14

Houchi, Karim, Ad Stoffelen, Gert-Jan Marseille, and Jos De Kloe. "Statistical Quality Control of High-Resolution Winds of Different Radiosonde Types for Climatology Analysis." Journal of Atmospheric and Oceanic Technology 32, no. 10 (October 2015): 1796–812. http://dx.doi.org/10.1175/jtech-d-14-00160.1.

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AbstractQuality control (QC) is among the most important steps in any data processing. These steps are elaborated for high-vertical-resolution radiosonde datasets that were gathered and analyzed to study atmospheric winds. The database is composed of different radiosonde wind-finding systems (WFSs), including radio theodolite, Loran C, and GPS. Inspection of this database, particularly for wind, wind shear, and ascent height increments (dz), showed a nonnegligible amount of outliers in radio theodolite data as compared to the two other WFSs, thus denoting quality differences between the various systems. An effective statistical QC (SQC) is then developed to isolate and eliminate outliers from the more realistic observations. Improving the accuracy of the radio theodolite WFS is critical to the derivation of the vertical motion and the vertical gradients of the horizontal wind—that is, wind shear—mainly because of the direct dependence of these quantities on dz. Based on the climatological distribution of the quality-controlled dz, a new approach is suggested to estimate these wind quantities for radio theodolite data. The approach is validated with the high-quality modern WFSs (Loran C and GPS). Although initially of reduced quality, applying SQC and using the climatological mean dz of 12-s smoothed radio theodolite profiles shows very good improvement in the climatological wind analyses of radio theodolite WFSs. Notably, the climatologies of ascent rate, vertical motion, horizontal wind, and vertical shear now look comparable for the various WFSs. Thus, the SQC processing steps prove essential and may be extended to other variables and measurement systems.

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15

Suhendra, Andryan. "Studi Perbandingan Hasil Pengukuran Alat Teodolit Digital dan Manual: Studi Kasus Pemetaan Situasi Kampus Kijang." ComTech: Computer, Mathematics and Engineering Applications 2, no. 2 (December 1, 2011): 1013. http://dx.doi.org/10.21512/comtech.v2i2.2851.

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Ground measurement helps illustrate a situation of land map to ease a civil engineer determining the center point of a building. From the situation map can determined the further works such as determining the point of building, land leveling, determining the point of the foundation and the volume of work for hoarding the land. A tool used for measurement activities is theodolite. Theodolite serves as a tool to determine the angle formed between the two points at the time of measurement. Drawing a situation map requires the results of the point measurement data. Theodolite is divided into two types, digital and manual. This study compares measurements results using both digital and manual theodolite performed at Kijang Campus, Binus University. From the comparison of data processing generated large differences in the coordinate system on the situation map with ranging from 1.31% to 322.67% on the abscissa axis and 0.39% to 41.83% on the ordinate axis.

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16

Malaquias, Isabel. "An eighteenth century travelling theodolite." História, Ciências, Saúde-Manguinhos 23, no. 3 (September 2016): 669–81. http://dx.doi.org/10.1590/s0104-59702016000300004.

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Abstract An old topographic compass displayed in a showroom of the Museu de Astronomia e Ciências Afins (MAST), in Rio de Janeiro, Brazil, took our curiosity namely because of its resemblance to a theodolite, described by J.H. de Magellan. Not many things were known about its previous history. From the different documents studied, and the characteristics of this singular theodolite, it must have belonged to the collections of instruments acquired for the Brazilian border demarcations undertaken after the Santo Ildefonso Treaty, agreed to by the Portuguese and Spanish courts in 1777. Several instruments were bought in London, and supervised and chosen by Magellan, the Portuguese instruments expert. We present arguments in favour of this conclusion.

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17

SHENG Lei, 盛磊, 吴志勇 WU Zhi-yong, 刘旨春 LIU Zhi-chun, 高策 Gao Ce, 张世学 ZHANG Shi-xue, and 王世刚 WANG Shi-gang. "Data processing for shipboard theodolite." Optics and Precision Engineering 21, no. 9 (2013): 2421–29. http://dx.doi.org/10.3788/ope.20132109.2421.

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18

Harvey, B. R., and J. M. Rüeger. "Theodolite observations and least squares." Australian Surveyor 37, no. 2 (June 1992): 120–28. http://dx.doi.org/10.1080/00050326.1992.10438785.

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19

Allan, A. L. "THEODOLITE INTERSECTION IN THREE DIMENSIONS." Survey Review 33, no. 262 (October 1996): 529–34. http://dx.doi.org/10.1179/sre.1996.33.262.529.

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20

He, Yufei, Xudong Zhao, Jianjun Wang, Fuxi Yang, Xijing Li, Changjiang Xin, Wansheng Yan, and Wentong Tian. "The operator difference in absolute geomagnetic measurements." Geoscientific Instrumentation, Methods and Data Systems 8, no. 1 (January 30, 2019): 21–27. http://dx.doi.org/10.5194/gi-8-21-2019.

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Abstract. Absolute geomagnetic measurement is very important at geomagnetic observatories. It plays a decisive role in data quality control and instrument calibration. As absolute geomagnetic measurements from modern fluxgate theodolite instruments have high precision, usually within 1 arcsec, the measurement results are susceptible to external factors. The operator difference is one of these factors and has become an important consideration that can not be ignored with respect to measurement results. Therefore, an experiment was designed in order to estimate the operator difference. Six fluxgate theodolites were used and six observers who were proficient in absolute measurements were invited to participate. The observers took turns making absolute geomagnetic measurements, and the operator difference between the observers for each instrument was computed by comparing baseline values using statistical methods.

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21

Pu, Peng Cheng, Xiao Song Guo, Zhao Fa Zhou, and Yu Wang. "Application of Error Design Idea to Deal with the Shafting Error of Photoelectric Theodolite." Advanced Materials Research 311-313 (August 2011): 1471–74. http://dx.doi.org/10.4028/www.scientific.net/amr.311-313.1471.

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The method to deal with the Shafting Error of photoelectric theodolite was designed according to the error design idea. The effect law between azimuth angle measure error of photoelectric theodolite and shafting error was studied based on MATLAB, and the simulating result reveals that the affect to azimuth angle measure error by each of the three-axis error was separately, and the final affect result can be account by adding each of the result, and the affect by collimation axis error and abscissa axis slop error can be eliminated by the normal-reversed measure method. According to the result above, the method for amending the azimuth angle measure error of photoelectric theodolite was proposed, and the Matlab simulating result proved the method is feasible.

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22

Li, Xing Hong, Xian Xiang, and Xiao Guang Du. "Servo Controller Application and Design in ATP System." Applied Mechanics and Materials 742 (March 2015): 540–45. http://dx.doi.org/10.4028/www.scientific.net/amm.742.540.

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With the rapid development of computer technology, it is widely used in the control field, including advanced alarm plane,cruise missile,radar,O-E theodolite,etc. The increasing complex and real-time arithmetic was applied in the ATP(Acquire Tracking Pointing) system of the control system for boosting the track、captring and pointing precision of O-E(photo-electric) theodolite, so it demanded the servo controller must complete more and more operations in shorter time. While the actual O-E theodolite accomplished the capture and tracking etc. based on PC104 system, so designed the servo control system based on embedded chip as CPU from the practicality, not only decreases the cubage of the system, but also increases the reliability and precision.

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23

Gong, Zhi Hua, Peng Wei Duan, Zhi Xue Liu, and Hai Dong Lv. "Analysis on Dynamic Accuracy Appraisal for Optical Theodolite." Applied Mechanics and Materials 563 (May 2014): 137–40. http://dx.doi.org/10.4028/www.scientific.net/amm.563.137.

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A method of dynamic accuracy appraisal for optical theodolite is proposed in the paper. Its mathematical model and solution method are deduced. Then, this appraisal method is verified through the simulation. The results suggest there are many advantages in accuracy and reliability to appraise dynamic accuracy of optical theodolite with the method proposed in the paper. In addition, the method is easier and conducive to engineering applications.

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24

Paar, Rinaldo, Miodrag Roić, Ante Marendić, and Stjepan Miletić. "Technological Development and Application of Photo and Video Theodolites." Applied Sciences 11, no. 9 (April 25, 2021): 3893. http://dx.doi.org/10.3390/app11093893.

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Theodolites are fundamental geodetic measuring instruments for all practical geodetic tasks, as well as for experimental geodetic scientific purposes. Their development has a long history. Photo and video theodolites represent the advanced development of classic theodolites. Development started in 19th century, but only in the last 15 years has commercial application been achieved in the geodetic profession. The latest development, called image-assisted total stations (IATS), is a theodolite which consists of a classic robotic total station (RTS) with integrated image sensors. It was introduced in the early 2000s. With the development of theodolites, their application became much wider; today, they can be used for structural and geo-monitoring, i.e., for the determination of static and dynamic displacements and deformations of civil engineering structures such as bridges, dams, wind turbines, and high buildings, as well as natural structures, such as mountain slopes. They can be implemented in geodetic monitoring systems, which are an integral part of engineering structural diagnosis, and they provide essential information about the current condition of the structure. This paper describes the technological development of photo and video theodolites divided into phases according to the main innovations in their development. The application of modern video theodolites (i.e., IATS) is presented through several experimental studies that were performed. The procedure of conducting measurements with this kind of instrument, as well as the analysis of acquired data and achieved results, is elaborated. Lastly, the authors conclude, according to the achieved results, that IATS can today be used for determination of quasi-static and dynamic displacements with small and high amplitudes.

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25

Hu, Changde, Yongqiang Li, Huafang Geng, and Jianqiang Liu. "Study on a Kind of Simulation Training System of Photoelectric Theodolite." MATEC Web of Conferences 227 (2018): 02023. http://dx.doi.org/10.1051/matecconf/201822702023.

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A kind of system of target simulation training of photoelectric theodolite is presented. On the basis of the experiment duties, almost 40 operation courses are set according to five modules, which are equipment operation, parameter testing, maintaining, troubleshooting and task flow. Modeling strategy of several kinds of aircraft track is studied and set. The modeling and controlling of the key parts of photoelectric theodolite are achieved with the software of UG and Unity3D. Then the fault waveform of the equipment failure is completed by the soft LabVIEW. With the software Eduis, the multimedia of the operation courses are done. Then scientific and reasonable assessment model is studied and set to evaluate the operation of the trainees. Finally, with the examples of the trainees exams and troops using, it shows the system of target simulation training of photoelectric theodolite meets the requirements.

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26

Ichimura, Kazuo, Mitsuyoshi Fujii, Youichi Tasaki, and Takakazu Ishimatsu. "Three-D Measurement Using Laser Theodolite." Journal of Robotics and Mechatronics 12, no. 1 (February 20, 2000): 24–28. http://dx.doi.org/10.20965/jrm.2000.p0024.

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Large structures are measured many ways. Meters providing high accuracy require jigs such as special targets. Targetless measurement usually provides low accuracy. Measurement using targets requires time at the work site for setting targets, which may require elevated spot work that is not always safe. We developed measurement incorporating laser theodolite and a CCD camera.

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27

LI Ning, 李宁, 张云峰 ZHANG Yun-feng, 刘春香 LIU Chun-xiang, 曹立华 CAO Li-hua, and 郭立红 GUO Li-hong. "Calibration of 1m aperture infrared theodolite." Optics and Precision Engineering 22, no. 8 (2014): 2054–60. http://dx.doi.org/10.3788/ope.20142208.2054.

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28

Dong-yan, Feng, and Gao Yun-guo. "Study on foundation's stability of theodolite." Physics Procedia 24 (2012): 1044–51. http://dx.doi.org/10.1016/j.phpro.2012.02.156.

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29

Sapunov, V., J. Rasson, A. Denisov, D. Saveliev, S. Kiselev, O. Denisova, Y. Podmogov, and S. Khomutov. "Theodolite-borne vector Overhauser magnetometer: DIMOVER." Earth, Planets and Space 58, no. 6 (June 2006): 711–16. http://dx.doi.org/10.1186/bf03351972.

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30

Sultan, Ibrahim A., and John G. Wager. "Simplified theodolite calibration for robot metrology." Advanced Robotics 16, no. 7 (January 2002): 653–71. http://dx.doi.org/10.1163/15685530260390764.

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31

Allan, A. L. "THE PRINCIPLES OF THEODOLITE INTERSECTION SYSTEMS." Survey Review 29, no. 227 (January 1988): 226–34. http://dx.doi.org/10.1179/sre.1988.29.227.226.

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32

Allan, A. L. "SURVEYING BUILDING SURFACES BY THEODOLITE INTERSECTION." Survey Review 33, no. 259 (January 1996): 339–46. http://dx.doi.org/10.1179/sre.1996.33.259.339.

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33

Porter, R. T., and J. R. Smith. "A Special Eight-Inch Reflecting Theodolite." Survey Review 43, no. 319 (January 2011): 54–66. http://dx.doi.org/10.1179/003962611x12894696204623.

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34

Petersen, DR, RE Link, MT Obaidat, and ZA Al-Smadi. "A Modified Theodolite Instrument: Conceptual Work." Journal of Testing and Evaluation 24, no. 3 (1996): 194. http://dx.doi.org/10.1520/jte11301j.

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35

Driels, Morris R., and Uday S. Pathre. "Robot calibration using an automatic theodolite." International Journal of Advanced Manufacturing Technology 9, no. 2 (March 1994): 114–25. http://dx.doi.org/10.1007/bf01750418.

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36

Abbas, Aqeel. "Design and Implementation of FOG Based Gyrocompass." Applied Mechanics and Materials 332 (July 2013): 124–29. http://dx.doi.org/10.4028/www.scientific.net/amm.332.124.

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A novel design of gyrocompass consisting of a single axis Fiber Optic Gyroscope (FOG) and a Theodolite is proposed to meet the requirements of low-cost, fast and high-precision. This algorithm uses FOG data and theodolite encoder feedback to determine Azimuth. Micro computer based software is also discussed which was developed for implementation of this scheme; finally test results and plots are briefly presented which proves effectiveness of the designed methodology. By this design an accuracy of 0.08ois achieved in approximately 5 min time.

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ZHANG Jing, 张晶, 郝伟 HAO Wei, 杨晓许 YANG Xiao-xu, 井峰 JING Feng, 黄伟 HUANG Wei, 邱鹏 QIU Peng, and 曹蓓 CAO Bei. "Electromechanical Coupling Characteristics of Optical-electric Theodolite." ACTA PHOTONICA SINICA 46, no. 1 (2017): 112005. http://dx.doi.org/10.3788/gzxb20174601.0112005.

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WANG Shou-yin, 王守印, and 王晓明 WANG Xiao-ming. "Analysis of Optical Theodolite Car's Vibrate Features." OME Information 28, no. 12 (2011): 26–31. http://dx.doi.org/10.3788/omei20112812.0026.

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Grist, M. W. "CLOSE RANGE MEASUREMENT USING ELECTRONIC THEODOLITE SYSTEMS." Photogrammetric Record 13, no. 77 (August 26, 2006): 721–28. http://dx.doi.org/10.1111/j.1477-9730.1991.tb00734.x.

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Driels, M. R., and U. S. Pathre. "Vision-based automatic theodolite for robot calibration." IEEE Transactions on Robotics and Automation 7, no. 3 (June 1991): 351–60. http://dx.doi.org/10.1109/70.88144.

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41

Whitney, D. E., C. A. Lozinski, and J. M. Rourke. "Industrial Robot Forward Calibration Method and Results." Journal of Dynamic Systems, Measurement, and Control 108, no. 1 (March 1, 1986): 1–8. http://dx.doi.org/10.1115/1.3143737.

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This paper presents a forward calibration method for serial link manipulators. The procedure uses a model whose parameters represent link lengths, joint encoder offsets, the relative orientations of consecutive axes, and experimentally observed effects of joint compliance, backlash, and gear transmission errors. A least squares numerical search algorithm uses theodolite measurements of tool position and the robot’s joint encoder readings to estimate the complete model’s parameters. The calibrated robot model predicts theodolite readings with an rms error of 5.7 × 10−5 rad (0.13 mm). Other tests show that this technique improves the robot model from as much as 4.8 mm error to 0.3 mm error.

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Wang, Jun, and Jian Ming Bai. "Weak Signal Detection Method in a Stronger Noise Background." Applied Mechanics and Materials 568-570 (June 2014): 260–64. http://dx.doi.org/10.4028/www.scientific.net/amm.568-570.260.

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When we use the laser auto collimation theodolite to measure the azimuth error angle of air target, the strong noise background reduces the spot imaging quality and seriously influences the measuring angle ability of the theodolite. In order to solve the problem, a photoelectric detection system used to detect the weak signal is designed based the correlation detection principle and the principle of correlation detection technology is introduced. We use Simulink software presenting a simulation to the detection system and do a feasibility analysis. Finally, it’s proved that the photoelectric detection system could suppress the strong noise background, improve the SNR greatly and detect the weak signal effectively.

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Azmi, Muhammad Farid. "Qibla Rulers: Keakurasian dalam Pengukuran Arah Kiblat." Ulul Albab: Jurnal Studi dan Penelitian Hukum Islam 2, no. 2 (July 19, 2019): 81. http://dx.doi.org/10.30659/jua.v2i2.3667.

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Di era modern ini, penentuan arah kiblat dapat dilakukan dengan berbagai metode, untuk menghasilkan arah kiblat yang akurat perlu ditunjang dengan alat ukur berketelitian tinggi pula, seperti alat Theodolite, namun Theodolite masih menjadi hambatan mengingat harganya yang kurang ekonomis. Slamet Hambali menawakan sebuah metode baru yang akurat dan murah dalam memecahkan masalah tersebut, yakni metode segitiga siku-siku dari bayangan matahari setiap saat. Ada beberapa koreksi yang perlu dilakukan untuk menyempurnakan metode tersebut, beranjak dari koreksi-koreksi tersebut, penulis mengembangkannya menjadi sebuah metode praktis yang disebut Qibla Rulers sebagai metode alternatif untuk menentukan arah kiblat setiap saat. Penelitian ini menemukan bahwa tingkat akurasi Qibla Rulers sama akuratnya dengan metode segitiga siku-siku dari bayangan Matahari setiap saat.

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Krulikowski, Joseph, Peter Sparacino, and Anthony Giordano. "Integration of Measurements and Maneuvering Technologies Used to Modify Caisson." Journal of Ship Production 9, no. 03 (August 1, 1993): 181–87. http://dx.doi.org/10.5957/jsp.1993.9.3.181.

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The modification of the caisson in a dry dock is in many ways more difficult than conventional ship modifications. This is because of the accuracy required, location of the measurements, and the size of the structure. The development of computer-based multi-headed electronic theodolite systems made it possible to extract accurate data on large structures. These data were formatted so they could be input directly into a computer-aided design system. The multi-headed electronic theodolite system was used to transfer new design information directly to the structure. The caisson structure was modified and moved safely into position with the aid of a water castor system for final assembly. Final dimension checks verified the accuracy of the system.

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Boyer, Eric L., and Peter L. Sparacino. "Photogrammetry and Multi-Headed Theodolite Systems as Complementary Tools." Journal of Ship Production 9, no. 03 (August 1, 1993): 167–72. http://dx.doi.org/10.5957/jsp.1993.9.3.167.

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Foundations for wet accumulator bottles (WABs) are large, complex structures that require fabrication in accordance with exacting dimensional tolerances. WABs are those tanks that store steam for the launching of aircraft off aircraft carriers. The traditional process for fabrication and installation of WAB foundations is a high-risk venture not only from cost and scheduling perspectives, but also from a geometrical perspective. The WAB foundations consist of two units, each with four structural members and two padeyes that require fabrication and installation with respect to an imaginary WAB centerline. Through the complementary use of photogrammetry and a multi-headed electronic theodolite system, the foundations can be fabricated in the shop to the correct shipboard geometry, and installed within tolerances and within cost and schedule. With all of the fabrication completed in the controlled environment of the shop, all structural, fabrication, and installation problems can be alleviated before the actual shipboard installation. This paper explains the methods and techniques for using photogrammetry and a multi-headed electronic theodolite system as complementary tools. It explains the practicality of collecting dimensional data from the existing ship structure using photogrammetry, and using a multi-headed electronic theodolite system to assist in the fabrication of the WAB foundations.

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Li, Miao, and Hui Bin Gao. "Tracking Error Modeling of the Theodolite Based on GRNN Method." Applied Mechanics and Materials 121-126 (October 2011): 4870–74. http://dx.doi.org/10.4028/www.scientific.net/amm.121-126.4870.

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To meet the requirement of high tracking accuracy as well as develop more reasonable evaluation method, in this paper, the General Regression Neural Network (GRNN) has been applied to build the tracking error model of the theodolite. First, we analyze the nonlinear factors in the theodolite. Second, we discuss the principle of GRNN, including its structure, the function as well as its priors. Third, we build the tracking error model based on GRNN and verify the model through the different parameters. The result indicated that the network model based on GRNN has high accuracy and good generalization ability. It could instead the real system to a certain extent. The research in this paper has important value to the engineering practice.

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Wetherelt, A., and P. Hunt. "AN IMPROVED TAPE ZERO GYRO-THEODOLITE CALCULATION TECHNIQUE." Survey Review 36, no. 279 (January 2001): 2–11. http://dx.doi.org/10.1179/sre.2001.36.279.2.

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M.P., Kolosov. "Optical system of the adaptive theodolite-type instrument." Geodesy and Aerophotosurveying 62, no. 4 (2018): 477–84. http://dx.doi.org/10.30533/0536-101x-2018-62-4-477-484.

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ZHANG Wei, 张炜, 柳玉晗 LIU Yu-han, and 李世诚 LI Shi-cheng. "Optical-electronic Theodolite Calibration with Star in Range." OME Information 28, no. 7 (2011): 54–58. http://dx.doi.org/10.3788/omei20112807.0054.

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LI Man-liang, 李满良, and 吴钦章 WU Qin-zhang. "CCD exposure center measuring system for photoelectric theodolite." Optics and Precision Engineering 21, no. 5 (2013): 1304–11. http://dx.doi.org/10.3788/ope.20132105.1304.

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