Abstract
The spatial distribution of Global Positioning System (GPS) satellites over a particular geographic location is one of the predominant factors that determine the receiver position accuracy referred to as Geometrical Dilution of Precision (GDOP). This parameter is mainly dependent on satellite vehicle (SV) distribution over the horizon (3°–7°) of a particular geographic location. This paper presents the analysis of temporal variations of GPS receiver position error due to GDOP. Wide variation of GDOP (values are 1.24, 1.76, 3.4, and 8.6 for 11, 9, 7, and 4 visible satellite configurations, respectively) and position errors (40–51.6 m, 76.2–110 m, and 21.8–33.3 m for x-, y-, and z-coordinates, respectively) are observed with respect to the time-varying satellite geometry due to the disappearance of SVs nearby horizon and are different in case of mid-latitude regions of the Indian subcontinent. This problem needs to be addressed while finalizing the deployment of IRNSS SVs over the Indian subcontinent.
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Sasibhushana Rao, G., Lavanya, B., Ashok Kumar, N. (2019). Satellite Horizon Effects on Temporal GPS Receiver Position Accuracy over Coastal Area of South India. In: Bansal, J., Das, K., Nagar, A., Deep, K., Ojha, A. (eds) Soft Computing for Problem Solving. Advances in Intelligent Systems and Computing, vol 817. Springer, Singapore. https://doi.org/10.1007/978-981-13-1595-4_1
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DOI: https://doi.org/10.1007/978-981-13-1595-4_1
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