基于參數(shù)引導(dǎo)的對(duì)寬帶SAR的類雜波干擾
The Similar Clutters Jamming to Wideband SAR Based on Leading of Parameters
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摘要: 寬帶高分辯SAR背景雜波對(duì)SAR目標(biāo)檢測和識(shí)別可造成嚴(yán)重影響。該文針對(duì)SAR的這種弱點(diǎn)，在匹配干擾的思路下，提出了一種新的時(shí)、頻、多普勒域多維匹配覆蓋的類雜波干擾。文中研究了用零記憶非線性(ZMNL)變換法模擬生成相關(guān)統(tǒng)計(jì)分布雜波。由于傳統(tǒng)的數(shù)字儲(chǔ)頻轉(zhuǎn)發(fā)式的干擾方式不適合寬帶信號(hào)，該文研究了參數(shù)引導(dǎo)的寬帶類雜波干擾產(chǎn)生機(jī)理和窄帶拼接的寬帶干擾信號(hào)實(shí)現(xiàn)方法。最后通過仿真實(shí)驗(yàn)驗(yàn)證了該方法對(duì)于寬帶SAR的干擾有效性。Abstract: Wideband-high-resolution SAR background clutters affect the target detection and classification seriously. Aiming at SARs weakness , the paper puts forward a new matching jamming, which is time, frequency and Doppler fields multidimensional-matching-overcast similar clutters jamming. In the paper, generation of the correlated statistical clutter vectors using zero memory nonlinearity method is developed. Because of the traditional method of using digital frequency memorizer is inapplicable to wideband SAR jamming, the jamming theory based on the leading of parameters and narrowband signals pieceing together technology on wideband jamming realization is researched .Finally, through the Matlab emluator, the paper validates that the method is effectual to jam the wideband SAR.
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