Position Error Calculations for IRNSS System Using Pseudo Range Method
S.D. Nageena Parveen1, P Siddaiahx2
1S.D. Nageena Parveen, Research Scholar, Department of ECE, ANU College of Engineering and Technology, Acharya Nagarjuna University, Guntur (A.P), India.
2P. Siddaiah, Principal, HOD Department of ECE, ANU College of Engineering and Technology, Acharya Nagarjuna University, Guntur (A.P), India.
Manuscript received on 18 June 2019 | Revised Manuscript received on 25 June 2019 | Manuscript published on 30 June 2019 | PP: 1085-1089 | Volume-8 Issue-5, June 2019 | Retrieval Number: E7247068519/19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The Indian Regional Navigation Satellite System (IRNSS) authorizes to determine the location of the user with the help of code measurements, called as pseudo ranges (PR). An alternate method, Differential IRNSS (DIRNSS) which improves the position accuracy of the user with the help of a reference known point by podcasting its correction among the local user. Hence, with the DIRNSS system the position error reduced when compare to IRNSS. In general satellite-navigation system, the Dilution of precision (DOP) unit will depend on parameters such as multipath effect and surrounding atmospheric condition. This precision value will be represented in terms of Geometric DOP, Position DOP, Vertical DOP, and Horizontal DOP. In this paper, positional errors (3D), Geometry Dilution of Precision (GDOP) of IRNSS system is calculated by viewing all operational IRNSS satellites instead of optimum four satellites, which diminishes the complexity and also gives the better value of a precision unit.
Keywords: Orbit Perturbations, Pseudo Range, Ionospheric Delays, Tropospheric Delays, GDOP.
Scope of the Article: Adaptive Systems