Robust adaptive beamforming method and device for suppressing main lobe interference
A technology of adaptive beam and main lobe interference, which is applied in the field of radar, can solve problems that affect the performance of adaptive beam, main lobe deformity, side lobe level increase, etc.
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Embodiment 1
[0063] See figure 1 , figure 1 It is a flowchart of a robust adaptive beamforming method for suppressing main lobe interference provided by an embodiment of the present invention. The adaptive beamforming method in this embodiment includes:
[0064] S1: Establish a receiving signal matrix according to the receiving signals of the array antenna;
[0065] In this embodiment, an array antenna composed of N antenna elements is used to receive echo signals. In practice, the echo signal may come from a target desired signal, main lobe interference, side lobe interference, and the like. Specifically, the S1 includes: using an array antenna composed of N antenna elements to receive echo signals; then establishing a received signal matrix X according to the echo signals:
[0066]
[0067] where x k (t) represents the echo signal received by the kth antenna element, n k Indicates the noise of the kth antenna element, N indicates the number of antenna elements, p indicates the n...
Embodiment 2
[0115] On the basis of the above embodiments, this embodiment provides a robust adaptive beamforming device that suppresses main lobe interference. See figure 2 , figure 2 It is a structural block diagram of a robust adaptive beamforming device for suppressing main lobe interference provided by an embodiment of the present invention. The adaptive beamforming device of this embodiment includes a blocking matrix construction module 101, a calculation module 102, and a suppression module 103 connected in sequence, wherein the blocking matrix construction module 101 is used to construct a multi-stage blocking matrix according to the desired signal direction and the main lobe interference direction The calculation module 102 is used to calculate the optimal weight vector of the received signal matrix according to the multi-stage blocking matrix; the suppression module 103 is used to suppress the main lobe interference by using the optimal weight vector of the received signal mat...
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