Research on design and simulation of a FM/cw lidar system

Jiguang Zhao; Zhiquan Zhang; Chen Deng

doi:10.1117/12.835662

28 August 2009 Research on design and simulation of a FM/cw lidar system

Jiguang Zhao, Zhiquan Zhang, Chen Deng

Proceedings Volume 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging; 738230 (2009) https://doi.org/10.1117/12.835662
Event: International Symposium on Photoelectronic Detection and Imaging 2009, 2009, Beijing, China

Abstract

The FM/cw lidar has the advantages of narrow receive bandwidth, non-range-ambiguity, enhanced ability of anti-jamming etc. A summary of FM ranging theory is introduced. The FM/cw lidar system is designed with the incoherent detection approach, which contained the transmitter, receiver and signal processing system, the system complexity and realization difficulty are reduced significantly. The transmitter is consisted of chirp signal generate module, laser modulate system and laser transmit subsystem. Receiver is consisted of receive optical system, photo electricity detector, amplifier and mixing. Signal process system is consisted of lowpass, IF amplifier, signal collecting and processing system. The main affect factors are analyzed, the modulate depth and mixing efficiency effect to the detection capability are simulated, which are the special to the FM/cw lidar based on the designed FM/cw lidar system. The simulation results indicate that the detection capability can be improved efficiently by enhance the modulate depth and mixing efficiency. The research results establish the theory and realization basic to the research on the FM/cw lidar.

Citation Download Citation

Jiguang Zhao, Zhiquan Zhang, and Chen Deng "Research on design and simulation of a FM/cw lidar system", Proc. SPIE 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, 738230 (28 August 2009); https://doi.org/10.1117/12.835662

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KEYWORDS

LIDAR

Modulation

Signal processing

Optical amplifiers

Receivers

Transmitters

Semiconductor lasers

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