空間濾波預(yù)處理法及其在單次快攝陣處理中的應(yīng)用
METHOD OF SPATIAL FILTER PREPROCESSING AND ITSAPPLICATION TO ARRAY PROCESSING OFSINGLE SNAPSHOT
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摘要: 本文提出了一種基于空間濾波預(yù)處理的陣處理方法,旨在提高現(xiàn)有譜估計(jì)方法的分辨力。此法大大地提高了有效的信噪比(SNR)和自相關(guān)矩陣的估計(jì)精度。文中將此法應(yīng)用于單次快攝的陣處理。模擬結(jié)果表明,用新方法可得到比用現(xiàn)有譜估計(jì)方法更好的結(jié)果。
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關(guān)鍵詞:
- 信號(hào)處理; 空間譜估計(jì); 高分辨陣處理; 天線陣
Abstract: A method based on spatial filter preprocessing is presented to enhancethe resolution of the existing spectrum estimation algorithms. The effective signal-to-noise ratio (SNR) and the accuracy of autocorrelation estimation are significantly improved through use of this method. The method is applied to array processing in the signal snapshot case. Simulation results are presented to illustrate the improved performance achieved by the new method as compared with that obtained by the other existing algorithms. -
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