An Attitude Estimation Algorithm for Satellite Navigation Array Against Gross Error

摘要

Based on the assumption that the signal waveform of satellites is known, the DOA of each satellite signal can be estimated by using the maximum likelihood estimation method, and then the antenna array attitude can be estimated by using the DOA of two satellites. Under the jamming condition, the accuracy of DOA estimation of different satellites is different, even wrong estimation may happen, which leads to the failure of attitude estimation. In this paper, according to the accuracy analysis of the maximum likelihood estimation method and the attitude determination error analysis conclusion, the RANSAC based attitude estimation method against gross error is proposed in the process of the antenna array attitude determination, so as to improve the estimation accuracy and fault tolerance. Finally, the simulation results show the effectiveness of the proposed method.