A carrier tracking technique based on a convex combination of two adaptive filters for EDL

Shengbo Hu; Xiujuan Yao; Na Zhao

doi:10.1117/12.775004

10 November 2007 A carrier tracking technique based on a convex combination of two adaptive filters for EDL

Shengbo Hu, Xiujuan Yao, Na Zhao

Proceedings Volume 6795, Second International Conference on Space Information Technology; 67954Y (2007) https://doi.org/10.1117/12.775004
Event: Second International Conference on Spatial Information Technology, 2007, Wuhan, China

Abstract

For planetary lander missions, the most challenging phase of the spacecraft-to-ground communications is during the entry, descent, and landing (EDL). Due to the EDL events, the extreme acceleration and jerk cause extreme Doppler dynamics on the signals received on Earth. In order to support spacecraft-to-earth communications during the EDL phase, we develop a robust and low complexity carrier frequency estimation and tracking technique that is able to operate under low SNR and highly non-stationary conditions, common to the adverse EDL scenario. The method comprises two adaptive filters supervised by a convex combiner. By simulating, it is shown that the investigated convex combination of individual adaptive predictors is able to outperform the best individual predictor.

Citation Download Citation

Shengbo Hu, Xiujuan Yao, and Na Zhao "A carrier tracking technique based on a convex combination of two adaptive filters for EDL", Proc. SPIE 6795, Second International Conference on Space Information Technology, 67954Y (10 November 2007); https://doi.org/10.1117/12.775004

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