CAJ | 학술논문

提出一种针对动目标检测和成像雷达的正弦调频干扰产生模型,将接收到的雷达发射信号进行正弦波频率调制,再与假的动目标模板信号进行卷积后转发.假目标回波附加的正弦频率调制使得两个通道问信号的差异增大,相关性降低.当动目标回波功率与干扰功率比在区间[-16dB,-12dB]时,检测到的动目标方位向坐标和距离维速度估计出现较大误差,形成欺骗干扰.当动目标回波功率与干扰功率比小于-16dB时,大功率干扰信号的存在抬高了恒虚警检测门限,降低了检测概率,出现遮盖性干扰.仿真试验证明该方法干扰效果明显,且简单易实现.
제출일충침대동목표검측화성상뢰체적정현조빈간우산생모형,장접수도적뢰체발사신호진행정현파빈솔조제,재여가적동목표모판신호진행권적후전발.가목표회파부가적정현빈솔조제사득량개통도문신호적차이증대,상관성강저.당동목표회파공솔여간우공솔비재구간[-16dB,-12dB]시,검측도적동목표방위향좌표화거리유속도고계출현교대오차,형성기편간우.당동목표회파공솔여간우공솔비소우-16dB시,대공솔간우신호적존재태고료항허경검측문한,강저료검측개솔,출현차개성간우.방진시험증명해방법간우효과명현,차간단역실현.
A novel model to produce sinusoidal weighted frequency modulated jamming is put forward.And it is used to jam moving target detection and imaging.In the model,the radar transmitting signal frequency is modulated by the sinusoidal frequency.It is then convoluted with the false moving model signal and retransmitted.The jamming signal frequency is modulated by the sinusoidal frequency,so the signal difference between dual channels increases and there is less correlation.When the power ratio of the moving target echo to the jamming signal is between-16 dB and-12 dB,big errors occur in velocity and cross-range coordinate.Deception jamming can be obtained.When the power ratio between moving target echo and jamming signal is less than-16 dB the detection threshold grows under the influence of the jamming signals of great power.And detection probability falls rapidly.By simulation the method has a good effect on jamming moving target detection and is realized easily.