一种光源调频的相位生成载波的反正切解调方法

摘要

A digital scheme that the modulated laser is converted by A/D to eliminate the companion amplitude modulation is introduced. Comparative study of arctangent PGC and PGC-DCM is made, and the experiment shows that arctangent PGC is able to detect lower frequency signals, and its time consuming is lower than that of PGC-DCM, so the arctangent PGC is more suited for the real-time system.%提出了一种将激光光源进行AD转换并与干涉信号相除以消除伴生调幅的相位生成载波的数字化解调方案,对消除伴生调幅后的信号进行了反正切PGC算法和微分交叉相乘PGC-DCM算法的对比研究,仿真实验表明:反正切PGC可以检测到更低频率的信号,而且算法耗时低,具有更高的实时性.