The principles and design of range-gain-control gated PMT

Yan Li; Hong-ru Yang; Xu-dong Li; Lei Wu; Bin Yu

doi:10.1117/12.836536

29 August 2009 The principles and design of range-gain-control gated PMT

Yan Li, Hong-ru Yang, Xu-dong Li, Lei Wu, Bin Yu

Proceedings Volume 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging; 73825C (2009) https://doi.org/10.1117/12.836536
Event: International Symposium on Photoelectronic Detection and Imaging 2009, 2009, Beijing, China

Abstract

In airborne underwater lidar applications, the reflecting light signal from the sea level is stronger than the one from the underwater object, the returned signal is decreased with the range as exponential and inverse square law and the backscattering return is very large. So the dynamic range could reach five to six orders of magnitude in few hundreds of nanoseconds. Therefore, it is necessary to compress the signal dynamic range to match the range of the digitizing or processing devices, typically 2 or 3 orders of magnitude, and to eliminate the reflecting light signal from the sea level and the backscattering. In this paper, we present a Range-Gain-Control Gated PMT method for this problem. The principal and the design of the Range-Gain-Control Gated PMT system are analyzed and discussed. The experiment results show that this method can complete the gated and the gain-control of the PMT.

Citation Download Citation

Yan Li, Hong-ru Yang, Xu-dong Li, Lei Wu, and Bin Yu "The principles and design of range-gain-control gated PMT", Proc. SPIE 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, 73825C (29 August 2009); https://doi.org/10.1117/12.836536

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