连续波比相测距系统的误差因素研究  

Error Analysis of CW Phase-comparison Rangefinder

作　　者：张少谦[1] 倪崇[2] 张立[1] 董江[1] 

机构地区：[1]北京林业大学理学院,北京100083 [2]中国科学院电子学研究所,北京100190

出　　处：《现代电子技术》2010年第19期1-4,共4页Modern Electronics Technique

基　　金：国家大学生创新计划支持项目(GCS091002235)

摘　　要：从某在研的连续波比相测距系统的测距原理出发,结合相位差分鉴相算法的误差特性,对影响测量精度的信号、系统以及外部因素进行了深入的研究。理论分析与实验结果相符,揭示了导致测距误差的主要因素,为下一步研究误差抑制方法,改善系统性能提供了依据。Proceeding from the rangefinding principle of a certain developing CW phase-comparison rangefinder, the signals, systems and external factors which influence the measurement accuracy are deeply researched in combination with the error characteristic of phase difference discrimination algorithm. The result of theoretical analysis is consistent with that of the experiment, which exposes the primary error sources of the ranging system. All the efforts provide a foundation for the further research of the error control method and a base for the improvement of the system performance.

关 键 词：比相测距 相位差分鉴相 校零 时钟抖动 多径效应 大气折射率抖动 

分 类 号：TN919-34[电子电信—通信与信息系统]