宽带LFMCW扫频源的相对非线性校正方法  

A Method on Nonlinear Correction of Broadband LFMCW Signal Utilizing Its Relative Sweep Nonlinear Error

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：《系统工程与电子技术》2001年第2期16-18,57,共4页Systems Engineering and Electronics

摘　　要：提出了一种利用相对非线性实现宽带LFMCW信号扫频非线性校正的方法 ,对该方法的原理进行了推导 ,并进行了计算机仿真和实际系统试验。该方法与以前的方法相比 ,具有不需已知延迟时间参数td 和扫频带宽参数B ,对电调宽带振荡器的原始非线性没有限制 ,其最终的剩余非线性与原始非线性无关等优点。This paper presents a method on nonlinear correction of broadband LFMCW signal utilizing its relative nonlinear error and introduces the deriving procedure and the results simulated by a computer and tested by a practical system. The method has two obvious advantages compared with the previous methods that correction has no relation with delay time td and sweep bandwidth B; and the inherent nonlinear error of VCO has no influence on the correction and its last results.

关 键 词：线性调频 连续波雷达 扫频干扰 LFMCW 非线性校正 扫频源 

分 类 号：TN958[电子电信—信号与信息处理]