一種抗密集欺騙式干擾的機(jī)載雷達(dá)動(dòng)目標(biāo)檢測(cè)方法
doi: 10.11999/JEIT140679 cstr: 32379.14.JEIT140679
基金項(xiàng)目:
國(guó)家自然科學(xué)基金(61372133, 61101241)和中央高?；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金(K50511020008)資助課題
A Moving Target Detection Method to Suppress Dense Deception Jamming for Airborne Radar
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摘要: 密集欺騙式干擾不僅會(huì)引起大量虛警，還會(huì)抬高恒虛警檢測(cè)器的門限，導(dǎo)致機(jī)載雷達(dá)的動(dòng)目標(biāo)檢測(cè)性能嚴(yán)重下降。針對(duì)此問(wèn)題，該文提出一種基于數(shù)據(jù)擬合的機(jī)載雷達(dá)抗密集欺騙式干擾的動(dòng)目標(biāo)檢測(cè)算法。該算法選取待檢測(cè)單元附近的數(shù)據(jù)樣本構(gòu)造基矩陣，對(duì)待處理數(shù)據(jù)進(jìn)行最小二乘擬合；同時(shí)，對(duì)擬合系數(shù)的邊界進(jìn)行自適應(yīng)約束以保護(hù)可能存在的目標(biāo)信號(hào)。該算法可以有效濾除密集欺騙式干擾，消除其帶來(lái)的虛警，能夠顯著改善機(jī)載雷達(dá)的動(dòng)目標(biāo)檢測(cè)性能?；趯?shí)測(cè)數(shù)據(jù)的實(shí)驗(yàn)結(jié)果驗(yàn)證了該算法的有效性。
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關(guān)鍵詞:
- 機(jī)載雷達(dá) /
- 動(dòng)目標(biāo)檢測(cè) /
- 空時(shí)自適應(yīng)處理 /
- 欺騙式干擾 /
- 數(shù)據(jù)擬合
Abstract: The presence of dense deception jamming not only causes numerous false alarms but also raises the threshold of constant false alarm rate detector, which severely degrades the detection performance of airborne radar. To suppress the dense deception jamming, a moving target detection method based on data fitting is proposed. Firstly, a data basis matrix is constructed utilizing sample data adjacent to the cell under test, which is used to represent the test data in the form of least-square fitting. Simultaneously, an upper-bound constraint is adaptively calculated to protect target signals from being fitted. The proposed method can effectively suppress the dense deception jamming and significantly improve the moving target detection performance of airborne radar. The effectiveness of the proposed method is verified by the experimental results on measured radar data. -
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