High-speed signal sampling technique in lidar application

Yong Zhang; Yuan Zhao; Feng Liu; Jian-zhong Su

doi:10.1117/12.2034951

19 September 2013 High-speed signal sampling technique in lidar application

Yong Zhang, Yuan Zhao, Feng Liu, Jian-zhong Su

Proceedings Volume 8905, International Symposium on Photoelectronic Detection and Imaging 2013: Laser Sensing and Imaging and Applications; 89052G (2013) https://doi.org/10.1117/12.2034951
Event: ISPDI 2013 - Fifth International Symposium on Photoelectronic Detection and Imaging, 2013, Beijing, China

Abstract

Common lidar systems sets the standard using only one sample data from the laser echo signal, while information from signal waveform is ignored, constraining further enhancement of range resolution and accuracy. By employing high-speed signal sampling technique, we make full use of the echo signal, and achieved large improvement on range resolution and accuracy. Moreover, the digital signal processing algorithm can be adopted for different targets, which provides better versatility of the lidar system. This paper reviewed high speed signal sampling technique and its application in lidar system. The HT high-speed DAQ developed in our group was used in both FMCW lidar and pulse laser radar. Over fourfold increase in range accuracy, comparing to that of traditional method, is demonstrated.

Citation Download Citation

Yong Zhang, Yuan Zhao, Feng Liu, and Jian-zhong Su "High-speed signal sampling technique in lidar application", Proc. SPIE 8905, International Symposium on Photoelectronic Detection and Imaging 2013: Laser Sensing and Imaging and Applications, 89052G (19 September 2013); https://doi.org/10.1117/12.2034951

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KEYWORDS

Data acquisition

LIDAR

Digital signal processing

Signal processing

Clocks

Pulsed laser operation

Oscilloscopes

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