ZHANG Ying-luo,WANG Ying-min,HUANG Ai-ping,HU Xin.Study on reflection characteristics of underwater target and laser echo power[J].Optoelectronics Letters,2020,16(2):137-142 Study on reflection characteristics of underwater target and laser echo power Author Name Affiliation ZHANG Ying-luo  School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, China  WANG Ying-min  School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, China  HUANG Ai-ping  School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, China  HU Xin  School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, China  Abstract:       For the design of the underwater laser detection system, the echo power equation of underwater target is derived, and the effects of water’s attenuation coefficient and incident angle on target’s echo power are analyzed. The bidirectional reflection distribution function (BRDF) of the single-station model is used to study the reflection characteristics of the target. The influence of the correlation coefficients of specular and diffuse reflection components on the reflected light intensity of special axisymmetric targets is studied. The signal-to-noise ratio (SNR) values of three types of target under different surface BRDF are given. The simulation results show that the larger the attenuation coefficient is, the smaller the echo power received, and the incidence angle is closer to 90°, the echo power is equal to 0. A smaller surface slope or a larger diffuse reflected coefficient will cause a smaller reflected intensity. Hits: 823 Download times: 0 View Full Text    Download reader