中文摘要：

论述了相位生成载波PGC解调技术的算法,并将基于PGC解调技术的硬件系统应用于Sagnac干涉型管道泄漏定位系统中,解调出干涉信号相位.实验结果表明：该解调系统能从干涉信号中有效地解调出泄漏信号,并实现管道泄漏点的准确定位.

英文摘要：

In this article, PGC arithmetic at length was discussed and then the hardware system basing on PGC technology was designed. The system has been applied for a new pipeline leakage detection system based on Sagnac intederometer to demodulate interference signal phase. It is proved that the circuit can demodulate leakage signal effectively, and leaking point is located accurately.