【摘要】 针对超长距离分布式光相位传感系统对于被探测物理量的定位问题,提出一种双Mach-Zehnder(MZ)结构和相关算法相结合的信号定位新方法。研究结果表明,该定位方案可以成功地在长距离(50 km)的范围内对信号定位。传感系统埋设于地下0.5 m处时,可以得到最小定位相对误差为0.19%。更多还原

【Abstract】 This paper describes a novel signal-locating scheme for the ultra-long distance distributed optical phase sensing system.The scheme was realized by combining the double Mach-Zehnder(MZ) configuration and the correlation algorithm,which solves the locating problem of the detected signal in the sensing system.The studies show that the scheme can locate the signal in the range of 50 lm successfully.The minimum locating relative error of 0.19% is achieved when the sensing system is buried in the 0.5 m depth underground.更多还原