相对加速度对LFMCW雷达性能的影响分析  

Influence on Performance of LFMCW Radar Analysis Caused by Relative Acceleration

作　　者：吴礼[1] 彭树生[1] 肖泽龙[1] 是湘全[1] 

机构地区：[1]南京理工大学电子工程与光电技术学院电子工程系,南京210094

出　　处：《宇航学报》2008年第1期311-314,351,共5页Journal of Astronautics

摘　　要：雷达与目标之间的相对加速度会引起回波信号多项式相位调制效应,为研究其对线性调频连续波(LFMCW)雷达性能的影响,本文分析了对称三角LFMCW雷达的差拍信号,导出对称三角波LFMCW雷达信号的加速度模糊函数和加速度分辨力的关系式。随着加速度的增大,多普勒频率的谱峰逐渐加宽,直至出现多个峰值,雷达多普勒参数的分辨性越来越差;同时得出加速度固有分辨力与调制周期的平方成反比的关系。The relative acceleration between the radar and target produced severe problems in radar signal processing.For studying effects on performance of LFMCW radar caused by acceleration,the paper analyzed the echo signal of symmetrical triangular LFMCW radar and derived its acceleration ambiguity function and acceleration resolution expresstion.With the increasement of acceleration,the spectrum bandwidth of doppler frequency widened gradually till some peaks appeared,and the doppler frequency resolution became w...

关 键 词：线性调频连续波雷达 加速度模糊函数 多普勒频率分辨力 

分 类 号：TN958[电子电信—信号与信息处理]