Incomplete radar signal restoration method

The invention discloses an incomplete radar signal restoration method. The method comprises the following steps: firstly, acquiring an acquisition signal y belonging to RM (M (N)) and an index set Z;secondly, setting In belonging to RN * N as a unit matrix, deleting the jth row (j belonging to Z) in In, and keeping the sequence and the size of other rows unchanged to obtain an observation matrixphi belonging to RM * N; then constructing a sparse dictionary matrix C belonging to RN * N by utilizing DCT according to a formula (6); and then reconstructing the sparse vector theta by using an orthogonal matching pursuit algorithm to obtain an estimated value of the sparse vector theta, and finally, obtaining a restored signal by using inverse DCT. Compared with the prior art, the method has the advantages that the complete original signal can be better reconstructed under the condition of continuous loss or random loss, and the restored signal is quite close to the original signal in theaspects of time domain, fre