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Laser detection method of ship wake bubbles based on multiple scattering intensity and polarization characteristics

Liang Shan-Yong Wang Jiang-An Zong Si-Guang Wu Rong-Hua Ma Zhi-Guo Wang Xiao-Yu Wang Le-Dong

Laser detection method of ship wake bubbles based on multiple scattering intensity and polarization characteristics

Liang Shan-Yong, Wang Jiang-An, Zong Si-Guang, Wu Rong-Hua, Ma Zhi-Guo, Wang Xiao-Yu, Wang Le-Dong
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  • Received Date:  07 August 2012
  • Accepted Date:  12 November 2012
  • Published Online:  20 March 2013

Laser detection method of ship wake bubbles based on multiple scattering intensity and polarization characteristics

  • 1. Information Countermeasrue Department, Electronic Engineering College, Naval University of Engineering, Wuhan 430033, China;
  • 2. China Shipbuilding Industry Group NO. 717 Research Institute, Wuhan 430033, China
Fund Project:  Project supported by the Advanced Research Program of Weapon Equipment, China (Grant No. 9140A26030110JB11) and the National Natural Science Foundation of China (Grant No. 51109217).

Abstract: It is the research foundation of ship wake detection by laser and new-generation optical homing torpedo to investigate the influence of multiple scattering effect on light scattering intensity and polarization characteristics of the ship wake bubbles. The simulation model of laser back-scattering detection by ship wake bubbles is based on vector Monte Carlo method, and the multiple scattering mechanism is studied. The influences of multiple scattering effect and the bubble density in ship wake on the light scattering intensity and polarization characteristics of echo signal are analyzed. The echo photon polarization contribution reception method and the echo signal polarization statistical method are proposed to solve the problem that the low photon return probability cannot form the echo energy in the system with small receiver field of view. These methods are based on the basic idea of the particle collision importance sampling and the traditional energy receiving method. The polarization detection experimental platform for the simulated wake bubbles is built and the accuracy of the simulation results is verified in experiment. The consistence of the experimental and simulation results shows that the bubble distance and density information can be characterized by echo intensity, polarization information and the echo signal intensity, and the polarization characteristics can be used to detect and distinguish the ship wake bubbles, or even a low density wake bubbles with high precision.

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