Radar angle measurement method

The invention discloses a radar angle measurement method, which comprises the steps of obtaining an initial covariance matrix according to multiple-input-multiple-output (MIMO) signals of a radar; performing sliding filtering on the initial covariance matrix to obtain a target covariance matrix; performing eigenvalue decomposition based on the target covariance matrix to obtain a noise subspace; and matching in the noise subspace by using a steering vector to obtain a target angle of the information source. Through the above steps, the accuracy of radar angle measurement can be improved while the real-time performance of data processing is ensured. 本申请公开了一种雷达测角方法，包括：根据雷达的多输入多输出MIMO信号，得到初始协方差矩阵；对所述初始协方差矩阵进行滑动滤波，获得目标协方差矩阵；基于所述目标协方差矩阵进行特征值分解，得到噪声子空间；利用导向矢量在所述噪声子空间匹配，得到信源的目标角度。通过上述步骤，可以能够在保障数据处理实时性的同时，提高雷达测角的精度。