外辐射源雷达系统中直达波的对消及仿真研究.pdf

外辐射源雷达系统中直达波的对消及仿真研究
王俊林，张剑云
(电子工程学院，安徽合肥230037)
摘 要：利用外辐射源(如调频广播、电视、GPS等的发射信号)的无源雷达探测技术一直是国
内外研究的热点。在目标检测上，直达波信号的干扰不但对通道的动态范围提出了极高的要求，同
时对微弱目标回波的检测构成了限制。文中利用二元阵的方法对直达波的干扰进行抑制，并对其
对消性能进行了仿真分析和研究。
关键词：外辐射源；目标探测；直达波对消；二元阵
中图分类号：P412．25；TP391．9 文献标志码：A 文章编号：1009—086X(2008)一O1—0126—03
Research on the Direct Signal Cancellation and Simulation
Based on N0nc00peratiVe Illuminator
W ANG Jun—Lin，ZHANG Jian—Yun
(Institute of Electronic Engineering，Anhui Hefei，230037，China)
Abstract：The technologies of the passive radar based on noncooperative illuminator have interested
US greatly．To target detect，the interference of direct signal requires rigorously dynamic scope of chan—
nel，also restricts detection of weak signa1．The direct signals is suppressed by way of two arrays，and the
result of simulation is given．
Key words：noncooperative illuminator；target detection；direct signal cancellation；binary arrays

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