DOA estimation method of LTE external radiation source radar based on matrix recombination

The invention discloses a DOA estimation method of an LTE external radiation source radar based on matrix recombination. The problem of coherent signal sources is considered, and a matrix recombination method is adopted to perform processing to remove the coherence between signal sources. The technical scheme adopted by the invention is to achieve decoherence of the signals by restoring the Toeplit property of a signal covariance matrix, and then accurately estimate the azimuth information of a coherent signal in a spatial domain. The Toeplit property of a cross-correlation signal covariance matrix is used. Compared with the existing method, the DOA estimation method disclosed by the invention has the advantages of high calculation speed and good instantaneity, furthermore, the estimationaccuracy is high, the detection performance of a radar system can be improved, and it is very meaningful for the practical application of the LTE external radiation source radar. 本发明公开了一种基于矩阵重组的LTE外辐射源雷达DOA估计方法，考虑了相干信号源问题并采用矩