GPS Signal in Space Error Analysis and Positioning Performance using IWO for Southern Region of Indian Subcontinent
Nalineekumari Arasavali1, Sasibhusanarao Gottapu2, Ashok Kumar N3
1Nalini Arasavali, Andhra University College Visakhapatnam, Inda.
2Dr. Sasibhushanarao Gottapu, Andhra University College Visakhapatnam, Inda.
3Ashok Kumar N, Andhra University College Visakhapatnam, Inda.

Manuscript received on 02 April 2019 | Revised Manuscript received on 07 May 2019 | Manuscript published on 30 May 2019 | PP: 2672-2676 | Volume-8 Issue-1, May 2019 | Retrieval Number: A1252058119/19©BEIESP
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Abstract: To determine the position of user, Global Positioning System (GPS) uses the signals transmitted from the satellites. The positioning accuracy of global Positioning System depends on a variety of influence factors. The GPS system performance is assessed with reference to carrier-to-noise density ratio (C/N0), pseudorange, satellite orbit and satellite clock errors. User navigation error depends on DOP factor, user range and equipment errors. User range errors are also called as Signal in Space Ranging Errors (SISRE). Ephemeris error decided by the broadcast ephemeris data uploaded by the control station. User range error (URE) is widely used to measure the effects of satellite orbit error and clock error on user positioning. Position accuracy of each satellite, geometry of the satellites and measurement of pseudorange are also important factors for determining the accurate position of user.
Keywords: Performance Global Positioning System (GPS) Analysis
Scope of the Article: Measurement & Performance Analysis