干涉解调鉴相测距法  

Interferometric phase demodulation ranging method

作　　者：肖洋[1] 于晋龙[1] 王菊[1] 王文睿[1] 王子雄[1] 吴炳阳[1] 赵博雅[1] 

机构地区：[1]天津大学电子信息工程学院,光纤通信实验室,天津300072

出　　处：《光电子．激光》2016年第12期1334-1339,共6页Journal of Optoelectronics·Laser

摘　　要：针对相位法激光测距技术中其测量精度与测量范围不能够同时兼顾问题,提出干涉解调鉴相测距系统。经过理论推导与实验验证表明,干涉解调鉴相测距系统中的偏振光干涉解调的方法能够代替传统的模拟鉴相系统,简化了模拟鉴相电路,减小了鉴相系统中的附加相移噪声;小步进改变调制频率扫频的方法能够解决相位测距系统中的模糊距离问题;干涉解调鉴相测距系统的测距精度能够达到10-5量级。It is difficult to achieve high measurement accuracy and wide measurement rang i n phase ranging technology simultaneously.To solve this problem,this paper propose an interference demodulation phase ranging system.The theory of interference demodulation phase ranging system is derived and verified by experiment.The interference demo dulation phase ranging system uses polarization interference demodulation instead of traditional analog phase system.The analog phase circuit is simplified, and the additional phase shift noise is reduced.To solve the problem of a mbiguous range,this system uses frequency modulation continuous wave method.The ranging accuracy of interferenc e demodulation phase ranging system can reach 10-5.

关 键 词：偏振干涉 鉴相 相位测距 

分 类 号：TN929.11[电子电信—通信与信息系统]