Results 131 to 140 of about 387 (165)
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IEE Proceedings - Radar, Sonar and Navigation, 2000
The authors present a review of the GDOP metric as used in GPS. Their goal is to review this metric and many of its known bounds as well as to report some new results. They use a formal linear algebraic framework to aid further study and insight.
R. Yarlagadda +3 more
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The authors present a review of the GDOP metric as used in GPS. Their goal is to review this metric and many of its known bounds as well as to report some new results. They use a formal linear algebraic framework to aid further study and insight.
R. Yarlagadda +3 more
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Genetic programming for the approximation of GPS GDOP
2010 International Conference on Machine Learning and Cybernetics, 2010Geometric Dilution of Precision (GDOP) is an indicator showing how well the constellation of GPS satellites in the Global Positioning System (GPS) is organized geometrically. The calculation of GDOP is a time-and power-consuming task, where involves solving measurement equations with complicated matrix transformation and inversions.
Chih-Hung Wu, Ya-Wei Ho
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Investigation of GDOP for IRNSS
2017 3rd International Conference on Applied and Theoretical Computing and Communication Technology (iCATccT), 2017The presence of Global Positioning System (GPS) of USA has helped the field of navigation greatly. India has developed and deployed Indian Regional Navigation Satellite System (IRNSS) for navigation within India. The precision of locating position using IRNSS is influenced by a few factors. One such factor is satellite Geometry with respect to the user.
K. J. Manjunath +3 more
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Proceedings of 1994 IEEE Position, Location and Navigation Symposium - PLANS'94, 2002
The GDOP is frequently thought of as a number signifying the effect of satellite geometry on computed position. More generally, it is well known that the GDOP matrix is the covariance of the linearized least squares errors in estimating position and bias from pseudoranges with unit variances.
J. Chaffee, J. Abel
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The GDOP is frequently thought of as a number signifying the effect of satellite geometry on computed position. More generally, it is well known that the GDOP matrix is the covariance of the linearized least squares errors in estimating position and bias from pseudoranges with unit variances.
J. Chaffee, J. Abel
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Analysis and simulations of GDOP in the location of GPS
SPIE Proceedings, 2007In this paper, the GDOP (Geometric Dilution of Precision) in the location of GPS (Global Positioning System) is studied from three aspects: First, a new algorithm of GDOP is obtained by matrix factorization. The validity of the new algorithm is proved by simulation comparing with the old method.
Zhipeng Wang, Jun Zhang
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Satellite Fusion Positioning Algorithm Based on GDOP
2020 5th International Conference on Communication, Image and Signal Processing (CCISP), 2020In passive satellite positioning, different positioning methods have different areas of high accuracy. In the TDOA/FDOA positioning method, there is a positioning blind area that runs through the satellites’ sub-satellite point, while in the AOA positioning method, the satellite's sub-satellite point is the region with the highest positioning accuracy.
Ju Si Yu, Gao Xuan Yi, Qi Chun Dong
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Compare of navigation constellations' GDOP with different construction
2011 International Conference on Multimedia Technology, 2011Based on the characteristics of the 2nd BeiDou and GPS, three kinds of constellations constituted by MEO, GEO+IGSO+MEO and GEO+IGSO+LEO+MEO were simulated in this paper. Space geometry intensity of these constellations was compared during autonomous orbit determination and ground positioning.
null Weixing Zhang +2 more
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GDOP Analysis for Positioning Design
2018A practical indoor system used for tracking people is typically based on both fixed anchor nodes and mobile nodes attached to people or other objects. In this mode of operation, mobile nodes whose position coordinates have been previously determined can contribute to the position determination of other mobile nodes whose position is sought.
Ian Sharp, Kegen Yu
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The GDOP value analysis in COMPASS satellite navigation
2015 IEEE 5th International Conference on Electronics Information and Emergency Communication, 2015Compass satellite navigation and positioning system is a new generation of independently developed satellite navigation system in China. In this paper, it establishes pseudorange error model by Compass navigation and positioning system. Then it deduces and analyses the geometric error factor of the system. And the navigation and positioning accuracy of
Zhongwen Gao, Hongyu Zhang
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GDOP and RAIM in Differential Operation
Navigation, 2001: Familiar matrix forms customarily used in evaluating the performance of satellite geometries for receiver autonomous integrity monitoring (RAIM) need modification for differential applications. When positions are determined through differencing across satellites, usage of a common space vehicle (SV) produces correlations.
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