双基地线性FMCW雷达信号模糊函数及分辨特性  

Ambiguity Function and Resolution Characteristic of Bistatic Linear FMCW Radar Signal

作　　者：张容权[1] 黄钰林[1] 杨建宇[1] 

机构地区：[1]电子科技大学电子工程学院,成都610054

出　　处：《电子与信息学报》2007年第4期836-840,共5页Journal of Electronics & Information Technology

基　　金：国家部级基金资助课题

摘　　要：该文通过对双基地雷达几何结构和线性调频连续波(FMCW)信号的特点分析,推导了双基地线性FMCW雷达信号的模糊函数,表明模糊函数形状受目标位置的影响;从模糊函数推导出的距离分辨率、速度分辨率、距离速度耦合斜率均是关于目标双基地角的函数,从而导致目标的分辨特性与目标位置有关。该结论可为这种雷达体制在信号处理和波形设计上提供理论依据。Based on the special geometrical configuration of bistatic radar and linear Frequency Modulation Continuous Ware （FMCW）principle, the ambiguity function of bistatic linear FMCW radar is derived in detail in this paper, and it is showed that the shape of ambiguity function is affected by the position of target. Furthermore, the expression of range resolution, velocity resolution and range-velocity coupling slope derived from the bistatic linear FMCW ambiguity function are the function with respect to the bistatic angle, so, the resolution characteristic has the relationship with the position of target. The conclusion of this paper can be used in the signal processing and waveform design of bistatic linear FMCW radar system.

关 键 词：双基地雷达 线性调频连续波 模糊函数 距离分辨率 速度分辨率 距离速度耦合 

分 类 号：TN957[电子电信—信号与信息处理]