系统工程与电子技术
繫統工程與電子技術
계통공정여전자기술
SYSTEMS ENGINEERING AND ELECTRONICS
2014年
5期
884-889
,共6页
潘小义%王伟%冯德军%傅其祥%王国玉
潘小義%王偉%馮德軍%傅其祥%王國玉
반소의%왕위%풍덕군%부기상%왕국옥
散射波干扰%间歇采样%图像欺骗%数目可调
散射波榦擾%間歇採樣%圖像欺騙%數目可調
산사파간우%간헐채양%도상기편%수목가조
scatter-wave jamming%intermittent sampling%image deception%alterable number
将间歇采样转发处理和散射波干扰方法相结合,提出了一种针对逆合成孔径雷达(inverse synthetic aperture radar,ISAR)的虚假目标图像数目可调型欺骗干扰方法。推导并对比了雷达目标回波和散射波干扰信号在目标二维 ISAR 图像重构时的差异,分析了散射波干扰后虚假图像的旋转现象;结合解线频调处理,分析了间歇采样占空比、采样周期对干扰效果的影响,得到了虚假图像数目与成像场景大小、采样周期之间的约束关系,从而实现虚假目标图像数目可调。数字仿真和实测数据实验均证明了该方法的有效性。
將間歇採樣轉髮處理和散射波榦擾方法相結閤,提齣瞭一種針對逆閤成孔徑雷達(inverse synthetic aperture radar,ISAR)的虛假目標圖像數目可調型欺騙榦擾方法。推導併對比瞭雷達目標迴波和散射波榦擾信號在目標二維 ISAR 圖像重構時的差異,分析瞭散射波榦擾後虛假圖像的鏇轉現象;結閤解線頻調處理,分析瞭間歇採樣佔空比、採樣週期對榦擾效果的影響,得到瞭虛假圖像數目與成像場景大小、採樣週期之間的約束關繫,從而實現虛假目標圖像數目可調。數字倣真和實測數據實驗均證明瞭該方法的有效性。
장간헐채양전발처리화산사파간우방법상결합,제출료일충침대역합성공경뢰체(inverse synthetic aperture radar,ISAR)적허가목표도상수목가조형기편간우방법。추도병대비료뢰체목표회파화산사파간우신호재목표이유 ISAR 도상중구시적차이,분석료산사파간우후허가도상적선전현상;결합해선빈조처리,분석료간헐채양점공비、채양주기대간우효과적영향,득도료허가도상수목여성상장경대소、채양주기지간적약속관계,종이실현허가목표도상수목가조。수자방진화실측수거실험균증명료해방법적유효성。
Based on scatter-wave jamming and intermittent sampling repeater,a deception jamming method for countering inversee synthetic aperture radar (ISAR)is proposed.The 2D ISAR image reconstruction diffe-rence between the images formed by the jamming signals and by the radar signals is analyzed and there is a rota-tional angle in the false-target images.With the dechirping,the jamming effect caused by the intermittent ratio and the sampling interval is analyzed.The restriction between the number of the false-target images and the size of the imaging scene and the sampling interval is given so that the number of the false-target images can be con-trolled.The analyses are verified by processing of simulated and real data.