@inproceedings{b7ca0255d8cc4466b09972a91a9197e3,
title = "A method for long absolute distance measurement based on high stability and synchronous multi-frequency",
abstract = "In order to improve the measurement accuracy and the real-time performance in long absolute distance measurement, a method based on high stability and synchronization multi-frequency is proposed. Multi-frequency is generated by shifting one mode laser frequency with three acousto-optic frequency shifters, and couple in one beam by fiber. Heterodyne frequencies between different multi-frequency is separated by its different polarization and frequency bandwidth, and acted as the coarse and precision measuring frequency. Therefore synchronous occurrence of measuring multi-frequency is achieved, which improve the real-time performance of measurement. Results of the experiment show that the measuring frequency stability is better than 3.6×10-8, and the laser range finder have an uncertain measuring result of less than 60 μm at a distance of 20 m under laboratory conditions.",
keywords = "absolute distance measurement, frequency stability, phase measurement, synchronous multi-frequency",
author = "Hongxing Yang and Zhigang Fan and Ma, \{Yu Wei\}",
year = "2013",
doi = "10.1117/12.2014566",
language = "英语",
isbn = "9780819495501",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Eighth International Symposium on Precision Engineering Measurements and Instrumentation",
note = "8th International Symposium on Precision Engineering Measurements and Instrumentation ; Conference date: 08-08-2012 Through 11-08-2012",
}