Robust navigation technology in GNC system

Fanchen Meng; Deyan Wang; Linlin Bi; Chaoyang Xing; Weisen Sun; Guiling Sun

doi:10.1117/12.2604845

24 November 2021 Robust navigation technology in GNC system

Fanchen Meng, Deyan Wang, Linlin Bi, Chaoyang Xing, Weisen Sun, Guiling Sun

Proceedings Volume 12065, AOPC 2021: Optical Sensing and Imaging Technology; 120650X (2021) https://doi.org/10.1117/12.2604845
Event: Applied Optics and Photonics China 2021, 2021, Beijing, China

Abstract

In response to the needs of future multi-domain space fighting situations such as multi-platform, strong confrontation, clustering, Guidance, Navigation and Control (GNC) et. al, a robust navigation filtering algorithm with adaptive weight distribution is proposed. The algorithm breaks through the innovation measurement update method of the centralized satellite navigation system during the traditional integrated navigation, which is adapted by strapdown inertial navigation attitude, speed, position update and satellite navigation system innovation measurement. Combining the elevation angle of each tracked visible satellite by the integrated navigation receiver and the satellite signal carrier-to-noise ratio, it is carried out by real-time adjustment of the integrated navigation Kalman filter observation noise matrix and performing adaptive weight distribution of the observation equation. Updating the integrated navigation Kalman filter state equation and error covariance matrix is used by the satellite and inertial navigation pseudorange and pseudorange rate measurement values. Finally, the inertial device measurement error is corrected by the information fusion state results of the satellite and inertial navigation, which improves GNC system information fusion positioning accuracy and system robustness.

Citation Download Citation

Fanchen Meng, Deyan Wang, Linlin Bi, Chaoyang Xing, Weisen Sun, and Guiling Sun "Robust navigation technology in GNC system", Proc. SPIE 12065, AOPC 2021: Optical Sensing and Imaging Technology, 120650X (24 November 2021); https://doi.org/10.1117/12.2604845

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