宽带LFMCW扫频源的相对非线性校正方法

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 broadbandLFMCW 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.