Statistical orbit determination algorithm for satellites in Indian navigation constellation (NavIC): towards extended ephemeris technology for NavIC receiver

• Autorzy: Ramanathan T. V. , Chipade Radhika A.

Identyfikatory

DOI

10.2478/arsa-2020-0003

• Języki publikacji: EN

Abstrakty

EN

Ephemerides are essential for the satellite positioning in Global Navigation Satellite Systems (GNSS) user receivers. Acquisition of navigation data and ephemeris parameters are difficult in remote areas as well as in challenging environments. Statistical orbit determination techniques can help to predict the orbital parameters in the absence of navigation data. The present study is a first step towards the solution for generating orbital parameters and predicting the satellite positions in the absence of navigation data for satellites in NavIC constellation. The orbit determination algorithm predicted the satellite position using single station navigation data. The perturbations affecting the satellite orbits in NavIC constellation were also studied and an algorithm using perturbation force models is proposed for the satellites in NavIC constellation. Extended Kalman Filter (EKF) was used to address the non-linear dynamics model of the perturbation forces and distance of the ground station from the centre of Earth was used as measurement to solve the measurement equation. The satellite orbits were predicted up to 1 hour using the single station navigation data. The root mean square error (RMSE) of 12.59 m and 13.03 m were observed for NavIC satellites in Geosynchronous and Geostationary orbits, respectively, after 1 hour. The Kolmogorov-Smirnov test used to assess the goodness of fit of the proposed EKF algorithm for orbit prediction was found to be significant at 1% level of significance.

Słowa kluczowe

EN

extended Kalman filter; NavIC; orbital parameters; statistical orbit determination

• Wydawca: Centrum Badań Kosmicznych PAN ; De Gruyter
• Czasopismo: Artificial Satellites : Journal of Planetary Geodesy
• Rocznik: 2020
• Tom: Vol. 55, No. 2
• Strony: 29--40
• Opis fizyczny: Bibliogr. 17 poz., rys., tab.

Twórcy

autor

Ramanathan T. V.

• Department of Statistics & Centre for Advanced Studies Savitribai Phule Pune University, Pune 411 007, India

autor

Chipade Radhika A.

• Department of Statistics & Centre for Advanced Studies Savitribai Phule Pune University, Pune 411 007, India
• Space Applications Centre (ISRO), Ahmedabad 380015, India

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).