Airborne laser fish finder

Xiao Zhu; Zaiguang Li; Houzheng Huang

doi:10.1117/12.308684

27 May 1998 Airborne laser fish finder

Xiao Zhu, Zaiguang Li, Houzheng Huang

Proceedings Volume 3265, Solid State Lasers VII; (1998) https://doi.org/10.1117/12.308684
Event: Optoelectronics and High-Power Lasers and Applications, 1998, San Jose, CA, United States

Abstract

An experimental airborne laser fish finder has been developed and field trial has been conducted. The Q-switched and frequency-doubled Nd:YAG laser output is of 100 HZ pulse repetition rate, 2 MW peak power, 8 ns pulse width. The green light receiving telescope is transmissive with 1400 mm focal length and 200 mm aperture. The varying-gain control of PMT and logarithmic amplifier are used to compress the 10⁵ dynamic range of received signals. The main features of data real-time processing subsystem are of 200 Ms/s sampling rate, 8 bit resolution, adjacent average treatment of return waveforms with high noise, and pseudo-color display of water depth.

Citation Download Citation

Xiao Zhu, Zaiguang Li, and Houzheng Huang "Airborne laser fish finder", Proc. SPIE 3265, Solid State Lasers VII, (27 May 1998); https://doi.org/10.1117/12.308684

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