Range performance analysis in linear FMCW radar
Range performance analysis in linear FMCW radar
复制标题
线性 FMCW 雷达的距离性能分析
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
Liu Falin
中科院分区：
文献类型：
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作者：
C. Weidong;Xu Shanjia;Wang Dongjin;Liu Falin
从线性FMCW信号的模糊函数出发，讨论了扫频非线性对距离性能的一般影响。基于卡森带宽的确定准则，给出了小相位调制指数下距离分辨率、目标距离延迟和非线性频率误差均方根之间的近似关系。然后分析了该雷达的自杂波干扰问题，给出了自杂波信噪比的估计表达式。最后，利用非线性频率误差的测量数据对该雷达的距离性能进行了仿真和比较。
From the ambiguity function of the linear FMCW signal, the general effects of the frequency sweep nonlinearity on the range performance are discussed. Based on the criteria of determining the Carson bandwidth, an approximate relationship among the range resolution, the target range delay and the mean square root of the nonlinear frequency errors is presented at small phase modulation index. Then the problems of the self-clutter interference in this radar are also described, and an estimation expression of the self-clutter to signal ratio is given. Finally, the measured data of nonlinear frequency errors are utilized for the simulation and comparison of the range performance in this radar.