Methods to improve sensitivity of phase-shift laser range finder based on optical carrier phase modulation

Hongyu He; Jianfeng Sun; Zhiyong Lu

doi:10.1117/12.2568064

21 August 2020 Methods to improve sensitivity of phase-shift laser range finder based on optical carrier phase modulation

Hongyu He, Jianfeng Sun, Zhiyong Lu

Author Affiliations +

Proceedings Volume 11501, Earth Observing Systems XXV; 115011L (2020) https://doi.org/10.1117/12.2568064
Event: SPIE Optical Engineering + Applications, 2020, Online Only

Conference Poster

Abstract

A coherent laser phase shift range finder based on optical phase modulation and phase shift measurement can measure distance and velocity precisely at the same time. In this paper, methods to improve the sensitivity of the range finder is presented. Matched filter algorithm is used to calculate the range velocity in frequency domain. Experiment is conducted at different signal power. The relationship between RMSE of measured range, as well as measured velocity, and the signal power is shown in the result.

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Hongyu He, Jianfeng Sun, and Zhiyong Lu "Methods to improve sensitivity of phase-shift laser range finder based on optical carrier phase modulation", Proc. SPIE 11501, Earth Observing Systems XXV, 115011L (21 August 2020); https://doi.org/10.1117/12.2568064

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