Space-time anti-interference method based on variable diagonal loading capacity
A space-time anti-interference and variable diagonal loading technology, which is applied in the direction of measuring devices, radio wave measurement systems, satellite radio beacon positioning systems, etc., can solve the problems of anti-interference performance degradation, failure to improve filtering performance, etc. Achieve the effects of improving array response mismatch, low computation and storage, and improving robustness
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[0019] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.
[0020] figure 1 It is a multi-stage Wiener filter structure, which can be divided into two parts: forward decomposition and backward synthesis according to the signal processing process. The forward decomposition is to sample the satellite signal X(k) ( figure 1 X in X) for orthogonal projection, decomposed to obtain the observation data X of the next level 0 (k) and reference signal d 0 (k), where X(k) is a vector of N×1, X 0 (k) is (N-1)×1 as a vector, that is, the dimension of the observation data is reduced by 1; the following decomposition steps are the same as the first step, and each level of observation data X i (k) decreases sequentially. h i is the i-th stage matched filter, B i is the i-th blocking matrix, ε i is the i-th stage output error, where i=1,2,...,D≤N, N is the number of array elements. In the last level of decomposition ...
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