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Proceedings Paper

Research on range-Doppler homodyne detection system
Author(s): Xiao Yu; Guang-lie Hong; Yuan Ling; Rong Shu
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Paper Abstract

At present, according to various optical and signal processing methods, there are mainly three detection modes in laser radar system: direct detection, heterodyne detection and homodyne detection. A homodyne laser radar system made up of a narrow line-width laser, an amplitude modulator and balanced detector is introduced here. Both transmitted and local oscillator (LO) signals are amplitude modulated by the same chirp signal, and the de-chirping process is completed in the optical domain. When we do signal processing on range and Doppler frequency, we use chirp-z method besides normal Fourier Transform. In this way, we get the experiment data more accurately. The experiment data indicates that the range and velocity precision reaches cm and mm/s dimension which are basically conforming to the theoretical precision.

Paper Details

Date Published: 15 August 2011
PDF: 8 pages
Proc. SPIE 8196, International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, 819618 (15 August 2011); doi: 10.1117/12.900565
Show Author Affiliations
Xiao Yu, Shanghai Institute of Technical Physics (China)
Guang-lie Hong, Shanghai Institute of Technical Physics (China)
Yuan Ling, Shanghai Institute of Technical Physics (China)
Rong Shu, Shanghai Institute of Technical Physics (China)


Published in SPIE Proceedings Vol. 8196:
International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications
John C. Zarnecki; Carl A. Nardell; Rong Shu; Jianfeng Yang; Yunhua Zhang, Editor(s)

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