扫频非线性对线性调频连续波雷达测距精度和距离分辨力的影响  

The Effects of Nonlinearity in Frequency Sweep on the Range Precision and Range Resolution of LFMCW Radar

作　　者：陈祝明[1] 丁义元[1] 向敬成[1] 

机构地区：[1]电子科技大学电子工程系,成都610054

出　　处：《电子学报》1999年第9期103-104,共2页Acta Electronica Sinica

摘　　要：线性调频连续波（ Ｌ Ｆ Ｍ Ｃ Ｗ） 雷达在理论上具有很高的测距精度和距离分辨力，但实际的 Ｌ Ｆ Ｍ Ｃ Ｗ 雷达由于其固有的扫频非线性而使其实际的测距精度和距离分辨力下降．本文根据 Ｌ Ｆ Ｍ Ｃ Ｗ 雷达回波功率谱的特性，从理论上分析了扫频非线性对 Ｌ Ｆ Ｍ Ｃ Ｗ 雷达测距精度和距离分辨力的影响，为实际 Ｌ Ｆ Ｍ Ｃ Ｗ 雷达扫频非线性的外部校正提供一个精确的理论依据．Linear frequency modulation continuous wave (LFMCW) radar has high theoretical range precision and range resolution,but its practical range precision and range resolution will decrease because of its inherent nonlinearity in frequency sweep.This paper analyses theoretically the effects of the nonlinearity on the range precision and range resolution of LFMCW radar according to its echo power spectrum,and gives accurately theoretical grounds for outside correction of the nonlinearity of LFMCW radar.

关 键 词：线性调频 连续波雷达 扫频非线性 距离分辨力 

分 类 号：TN958.94[电子电信—信号与信息处理] TN953.2[电子电信—信息与通信工程]