Multiple-target and send-receive angle estimation method of double-base multiple-input and multiple-output radar
An angle estimation, multi-input technology, applied in radio wave measurement systems, instruments, etc., can solve problems such as unfavorable real-time processing and hardware implementation, unsatisfactory estimation accuracy, large amount of calculation, etc. The effect of good angle estimation performance and improved estimation accuracy
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[0040] The implementation steps of the present invention mainly include:
[0041] 1) Collect the echo signal of each receiving antenna through the A / D sampling module, and pass the collected signal of each receiving antenna through a matched filter bank to separate the signals of the corresponding transmission channels, and get an array element number MN The received data X(t) of the virtual array of, where M and N respectively represent the number of transmitting and receiving array elements;
[0042] 2) According to the received data X(t), construct a received data matrix Y(t) that satisfies the characteristics of the Centro-hermitian matrix:
[0043] Y(t)=[X(t)Γ MN X * (t)Γ L ] (1)
[0044] Where Γ MN Represents a MN×MN anti-angle permutation matrix, Γ L Represents an L×L anti-angle permutation matrix, whose elements on the anti-diagonal line are all 1, and the other elements are all 0. (·) * Represents the conjugate of the matrix.
[0045] 3) Perform Unitary transformat...
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