本文關(guān)鍵詞： 機(jī)載雷達(dá) 空時(shí)自適應(yīng)處理 距離非平穩(wěn)雜波 自適應(yīng)波束形成　出處：《電波科學(xué)學(xué)報(bào)》2014年04期 　論文類型：期刊論文

【摘要】：針對(duì)機(jī)載非正側(cè)視雷達(dá)的距離非平穩(wěn)雜波抑制問(wèn)題,提出了一種低重頻數(shù)據(jù)輔助的俯仰預(yù)濾波方法,用于濾除距離非平穩(wěn)的近程雜波.該方法在無(wú)俯仰主瓣雜波信號(hào)的低重頻數(shù)據(jù)域選取訓(xùn)練樣本,并采用自適應(yīng)俯仰空間頻率補(bǔ)償技術(shù)估計(jì)協(xié)方差矩陣,能夠得到較理想的俯仰自適應(yīng)方向圖.推導(dǎo)了近程雜波俯仰維雜波秩的計(jì)算公式,為近程雜波抑制提供了理論支撐.在濾除距離非平穩(wěn)的近程雜波后,能為方位-多普勒空時(shí)自適應(yīng)處理器提供距離平穩(wěn)的訓(xùn)練樣本,使其性能明顯改善.仿真實(shí)驗(yàn)驗(yàn)證了該方法的有效性.
[Abstract]:The airborne sidelooking radar distance nonstationary clutter suppression, proposed pitch pre filtering method of a low frequency data, for the non smooth short-range clutter filtering distance. This method in pitch main clutter low repetition frequency domain data signal selection of training samples, and the adaptive pitch spatial frequency compensation technique to estimate the covariance matrix, can obtain ideal pitch adaptive pattern. Derived short-range clutter elevation formula of wave clutter rank, and provides theoretical support for short-range clutter suppression. In the non-stationary process near distance filtering clutter, can provide a steady distance training sample for the range - Doppler space-time adaptive processor, its performance can be significantly improved. The simulation results verify the validity of the method.

【作者單位】： 西安電子科技大學(xué)雷達(dá)信號(hào)處理國(guó)家重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金(No.61101241,No.61372133) 中央高�；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金(K50511020008)
【分類號(hào)】：TN959.73
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本文編號(hào)：1536062