TY - GEN
T1 - An underwater ranging system based on photoacoustic effect occurring on target surface
AU - Ni, Kai
AU - Hu, Kai
AU - Li, Xinghui
AU - Wang, Lidai
AU - Zhou, Qian
AU - Wang, Xiaohao
PY - 2016/11
Y1 - 2016/11
N2 - In this paper, an underwater ranging system based on photoacoustic effect occurring on target surface is proposed. In this proposal, laser pulse generated by blue-green laser is directly incident on target surface, where the photoacoustic effect occurs and a sound source is formed. And then the sound wave which is also called photoacoustic signal is received by the ultrasonic receiver after passing through water. According to the time delay between transmitting laser and receiving photoacoustic signal, and sound velocity in water, the distance between the target and the ultrasonic receiver can be calculated. Differing from underwater range finding by only laser, this approach can avoid backscattering of laser beam, so easier to implement. Experimental system according to this principle has been constructed to verify the feasibility of this technology. The experimental results showed that a ranging accuracy of 1 mm can be effectively achieved when the target is close to the ultrasonic receiver.
AB - In this paper, an underwater ranging system based on photoacoustic effect occurring on target surface is proposed. In this proposal, laser pulse generated by blue-green laser is directly incident on target surface, where the photoacoustic effect occurs and a sound source is formed. And then the sound wave which is also called photoacoustic signal is received by the ultrasonic receiver after passing through water. According to the time delay between transmitting laser and receiving photoacoustic signal, and sound velocity in water, the distance between the target and the ultrasonic receiver can be calculated. Differing from underwater range finding by only laser, this approach can avoid backscattering of laser beam, so easier to implement. Experimental system according to this principle has been constructed to verify the feasibility of this technology. The experimental results showed that a ranging accuracy of 1 mm can be effectively achieved when the target is close to the ultrasonic receiver.
KW - Photoacoustic effect
KW - Time of flight
KW - Underwater ranging
UR - https://www.scopus.com/pages/publications/85011343057
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85011343057&origin=recordpage
U2 - 10.1117/12.2246199
DO - 10.1117/12.2246199
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 9781510604650
VL - 10023
BT - Proceedings of SPIE - The International Society for Optical Engineering
PB - SPIE
T2 - Conference on Optical Metrology and Inspection for Industrial Applications IV
Y2 - 12 October 2016 through 14 October 2016
ER -