Orbit Estimation of GEO-missions Applicable to NavIC Data
Varsha H. S.1, Shreyanka B. Chougule2, N. V. Vighnesam3, Sudha K. L.4
1Varsha H. S., Junior Research, Department of Electronics and Communication Dayananda Sagar College of Engineering, Bengaluru, India.
2Shreyanka B. Chougule, Junior Research, Department of Electronics and Communication Dayananda Sagar College of Engineering, Bengaluru, India.
3Dr. N. V. Vighnesam, Professor, Department of Mathematics, Dayanandasagar College of Engineering, Karnataka, India.
4Dr. K. L. Sudha, Professor, Department of Electronics and Communication Engineering, Dayananda Sagar College of Engineering, Bangalore, India
Manuscript received on January 12, 2020. | Revised Manuscript received on January 21, 2020. | Manuscript published on February 10, 2020. | PP: 253-256 | Volume-9 Issue-4, February 2020. | Retrieval Number: D1349029420/2020©BEIESP | DOI: 10.35940/ijitee.D1349.029420
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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: Indian Regional Navigation Satellite System (IRNSS) is India’s own navigation system. It is a seven satellite constellation with the operational name NavIC – Navigation with Indian Constellation. Satellite Orbit determination (OD) estimates the position and velocity of orbiting satellite. The two main estimation algorithms widely used in Global Navigation Satellite Systems (GNSS) are Extended Kalman Filter (EKF) and Least Squares. This study on Batch Least Squares (BLS) – Differential Correction (DC) algorithm demonstrates precise orbit estimation of any GEO missions using only range measurements with crude initial state parameters. Currently, the study is based on simulated inputs and the satellite orbits are successfully estimated with position error in sub-centimeters level. Further, the work will be extended to live data of IRNSS satellites.
Keywords: Batch Least Squares, Clock bias, Differential Correction, Estimation Algorithms, IRNSS, NavIC receiver, Orbit Determination, Satellite Position Estimation
Scope of the Article: Data Analytics