| 调频广播台杂波和噪声与目标回波功率对比分析 |
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| 引用本文： | 孟宪会,张杨,张朝柱,杨莘元.调频广播台杂波和噪声与目标回波功率对比分析[J].应用科技,2009,36(1):48-51. |
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| 作者姓名： | 孟宪会 张杨 张朝柱 杨莘元 |
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| 作者单位： | 1. 哈尔滨工程大学,信息与通信工程学院,黑龙江,哈尔滨,50001
2. 海军装备研究院,北京,100073 |
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| 摘 要： | 利用无源雷达来对目标检测是目前电子对抗研究的一个热点。该文给出了以调频广播信号为非合作照射源来进行目标探测的传输模型，由此计算出目标回波信号与直达波功率比（信直比）、信杂比和信噪比的强度，然后将三者的强度进行了对比分析，得出了直达波对整个系统性能一直起到主导作用，而对于不同的基线距离，信噪比和信杂比对系统性能影响程度的比重将发生变化，从而为后续的杂波抑制和信号检测提供了理论依据。
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| 关 键 词： | 调频广播 传输模型 信直比 信杂比 信噪比 |
Contrasting analysis of clutter and noise of frequency modulation broadcasting with echo power of target |
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| MENG Xian-hui,ZHANG Yang,ZHANG Chao-zhu,YANG Shen-yuan.Contrasting analysis of clutter and noise of frequency modulation broadcasting with echo power of target[J].Applied Science and Technology,2009,36(1):48-51. |
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| Authors: | MENG Xian-hui ZHANG Yang ZHANG Chao-zhu YANG Shen-yuan |
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| Institution: | MENG Xian-hui , ZHANG Yang, ZHANG Chao-zhu , YANG Shen-yuan(1.College of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, China;2. Navy Equipment Research Institute,Beijing 100073,China) |
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| Abstract: | Target detection by passive radar has attracted the attention of many researchers in the electronic warfare field. In this paper, the mathematical model of target detection regarding the FM signal as the non-cooperative illumination source is given to calculate the power ratio between the target echo signal and direct wave（SIR） , the SCR and the SNR, and then to compare and analyze the strengths of them, drawing a conclusion that the direct wave always plays a dominant role in the whole system performance, while for different baselines, the proportions of influence of SNR and SCR on the system performance will change. This provides a theoretical basis for the follow-up clutter suppression and detection. |
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| Keywords: | FM radio transmission model signal-to-direct wave ratio SCR SNR |
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