| DRFM拖引干扰信号的谐波效应分析及抑制 |
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| 引用本文： | 常成,臧小刚,宫新保,凌小峰.DRFM拖引干扰信号的谐波效应分析及抑制[J].信息技术,2009(4). |
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| 作者姓名： | 常成 臧小刚 宫新保 凌小峰 |
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| 作者单位： | 上海交通大学电子工程系,上海,200240 |
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| 摘 要： | 受到数字器件延时步进精度的限制,目前的DRFM在进行线性距离波门拖引时可能出现以时延步进频率为间隔的"谐波效应",使得PD雷达可能通过类似于多普勒旁瓣检测的方式识别来自DRFM的干扰.分析导出了消除"谐波效应"的条件,并且在此基础上提出了一种基于DAC取样时钟延迟的有效抑制"谐波效应"的改进型DRFM结构,仿真验证了这种方法的有效性.
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| 关 键 词： | 干扰识别 谐波效应 DAC取样时钟延迟 |
Analysis and suppression method of the harmonic effect on DRFM stealer signals |
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| CHANG Cheng,ZANG Xiao-gang,GONG Xin-bao,LING Xiao-feng.Analysis and suppression method of the harmonic effect on DRFM stealer signals[J].Information Technology,2009(4). |
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| Authors: | CHANG Cheng ZANG Xiao-gang GONG Xin-bao LING Xiao-feng |
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| Institution: | School of Electronic Engineering;Shanghai Jiaotong University;Shanghai 200240;China |
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| Abstract: | Constrained by the discrete time delay resolution of the digital processing device,the spectrum of current DRFM-based linear range gate stealer(LRGS) signal may produce "harmonic effect".Thus it can be detected by the target PD radar through the method similar to doppler side-lobe detection.Based on the analysis of sufficient conditions to avoid "harmonic effect",an improved DRFM hardware structure is proposed in this paper.The proposed DRFM is based on sample clock delay controlling of DAC.Simulation exper... |
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| Keywords: | DRFM |
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