Pulsed laser ranging techniques based on digital signal processing methods for automobile anti-collision application

Zhihui Sun; Jiahao Deng

doi:10.1117/12.806916

2 February 2009 Pulsed laser ranging techniques based on digital signal processing methods for automobile anti-collision application

Zhihui Sun, Jiahao Deng

Author Affiliations +

Proceedings Volume 7160, 2008 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Applications; 716023 (2009) https://doi.org/10.1117/12.806916
Event: International Conference of Optical Instrument and Technology, 2008, Beijing, China

Abstract

A 1.55 µm digital laser radar system is designed and implemented for automobile anti-collision application. In order to reduce the influence of foggy, rainy and snowy weather on laser detection, digital signal processing methods are adopted. Multi-pulse coherent average algorithm is used to improve the signal-to-noise ratio of echo by N times. The correlation detection algorithm is adopted to estimate the time-of-flight. Multi-time delayed correlating method is used to improve the time-of-flight estimation resolution. Experimental results indicate that the digital signal processing methods in this paper can reduce the influence of bad weather conditions, and obtain high range accuracy.

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Zhihui Sun and Jiahao Deng "Pulsed laser ranging techniques based on digital signal processing methods for automobile anti-collision application", Proc. SPIE 7160, 2008 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Applications, 716023 (2 February 2009); https://doi.org/10.1117/12.806916

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