The Research on the Algorithm of Inverse Beamforming for Interference Suppression with Good Robust
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摘要: 在陣列信號處理中，逆波束形成干擾抑制算法利用干擾的方位信息估計干擾信號從而進行干擾抑制，但在復雜海洋環(huán)境中陣列接收的干擾信號往往存在相位隨機擾動，此方法估計的干擾信號與實際干擾信號有較大偏差，造成干擾抑制效果不理想。為適應干擾相位的隨機擾動，具有良好寬容性的逆波束形成干擾抑制算法充分考慮隨機擾動的存在，利用干擾重建矩陣估計干擾信號，此時估計干擾信號更接近實際干擾信號，保證干擾抑制有較好的結果。該文算法充分考慮了復雜海洋環(huán)境中干擾信號的相位擾動，可以獲得較好的干擾抑制效果，提高了算法的寬容性。理論分析、計算機仿真結果均表明該文算法的有效性。Abstract: In the array signal processing, the inverse beamforming for interference suppression algorithm uses the azimuth information of interference to estimate and suppress the interference. In the complex marine environment the phase of the interference which is received by the array has the random disturbances, there is a big deviation between the actual interference and the interference which is estimated by the algorithm, which makes the effect of the interference suppression not good. In order to adapt the random disturbances of the phase of the interference, the inverse beamforming for interference suppression algorithm with good robust takes the random disturbances into full consideration and uses the interference reconstruction matrix to estimate the interference. In this case the estimated interference is closer to the actual interference signal and the result of interference suppression is better. The proposed method takes the random disturbances of the phase of the interference into full consideration, so it shows good robust in the complex ocean environment. Both the theoretical analysis and the computer simulation results show the effectiveness of the proposed method.
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Key words:
- Under water signal processing /
- Array /
- Interference suppression /
- Inverse beamforming /
- Robust
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