Results 121 to 130 of about 387 (165)
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GDOP minimum in multi-GNSS positioning
Advances in Space Research, 2017Abstract In positioning, navigation and timing (PNT) applications with the Global Navigation Satellite System (GNSS), the geometric dilution of precision (GDOP) offers an important index for selecting satellites from all tracked satellites for positioning calculation.
Bi Liu, Yunlong Teng, Qi Huang
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The Minimum of GDOP for Satellite Navigation System
Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, 2018Geometric Dilution of Precision (GDOP) represents the magnification positioning error in satellite navigation, smaller GDOP represents high positioning accuracy. The analytic results of relevant methods to derive the minimum of GDOP by geocentric coordinate system cannot be achieved in reality, because it does not think fully about the satellite ...
Xuetao Yang, Jianchao Du, Weibin Li 0002
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IET Radar, Sonar & Navigation, 2000
Position determination in two-dimensional (2-D) scenarios is examined. The results can apply to position location in cellular systems using the system infrastructure. It is shown that the lowest possible geometric dilution of precision (GDOP) attainable from range or pseudo-range measurements to N optimally located points is 2//spl radic/N.
N Levanon
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Position determination in two-dimensional (2-D) scenarios is examined. The results can apply to position location in cellular systems using the system infrastructure. It is shown that the lowest possible geometric dilution of precision (GDOP) attainable from range or pseudo-range measurements to N optimally located points is 2//spl radic/N.
N Levanon
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A Study on GPS GDOP Approximation Using Support-Vector Machines
IEEE Transactions on Instrumentation and Measurement, 2011Global Positioning System (GPS) has extensively been used in various fields. Geometric Dilution of Precision (GDOP) is an indicator showing how well the constellation of GPS satellites is geometrically organized. GPS positioning with a low GDOP value usually gains better accuracy.
Chih-Hung Wu
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A closed-form formula for GPS GDOP computation
GPS Solutions, 2008Geometric dilution of precision (GDOP) is often used for selecting good satellites to meet the desired positioning precision. An efficient closed-form formula for GDOP has been developed when exactly four satellites are used. It has been proved that increasing the number of satellites for positioning will always reduce the GDOP.
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Change of Geometric Dilution of Precision (GDOP) for integrated system
2016 IEEE Information Technology, Networking, Electronic and Automation Control Conference, 2016With the development of the Global Navigation Satellite System (GNSS), the integrated system including two or more individual constellations will be the main navigation mode in the future. For integrated system, the Geometric Dilution of Precision (GDOP) is widely used for the selection of satellites and the evaluation of positioning accuracy.
Ao Yongcai +3 more
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New characteristics of weighted GDOP in multi-GNSS positioning
GPS Solutions, 2018In positioning, navigation and timing applications of multi-GNSS (global navigation satellite system) constellations, the geometric dilution of precision (GDOP) offers an important index for selecting satellites and evaluating positioning accuracy. However, GDOP assumes that the measurement errors of all the tracked satellites are independent and have ...
Yunlong Teng, Jinling Wang, Qi Huang
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Optimal Placements for Minimum GDOP With Consideration on the Elevations of Access Nodes
IEEE Transactions on Instrumentation and MeasurementClick on the DOI link to access this article at the publishers website (may not be free). ; Minimum Geometric Dilution of Precision (GDOP) is desired for a high accuracy in the localization of an unknown node. The optimal placements for the access nodes (or sensing nodes) to achieve the minimum GDOP can be configured by combinations of symmetric cones ...
Genshe Chen, Yanwu Ding, Dan Shen
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On the GDOP and Accuracy for Indoor Positioning
IEEE Transactions on Aerospace and Electronic Systems, 2012Position accuracy and geometric dilution of precision (GDOP) analysis are presented for indoor mesh positioning systems in multipath and non-line-of-sight (NLOS) propagation environments. Concise analytical formulas are derived for the position error statistics in the presence of biased ranging errors and uniform random spatial anchor node deployment ...
Ian Sharp, Kegen Yu, Mark Hedley
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Support Vector Regression for GDOP
2008 Eighth International Conference on Intelligent Systems Design and Applications, 2008Geometric Dilution of Precision (GDOP) is an indicator showing how well the constellation of GPS satellites is organized geometrically. The calculation of GDOP is a time- and power-consuming task which can be done by solving measurement equations with complicated matrix transformation and inversion. This paper presents a support vector regression (SVR)
Wei-Han Su, Chih-Hung Wu
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