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SI Dairong, WANG Mingjun, LIU Yongqin, SUI Xiaolin. Incoherent component ratio of laser scattering from rough sphere and cone targets[J]. LASER TECHNOLOGY, 2021, 45(1): 37-43. DOI: 10.7510/jgjs.issn.1001-3806.2021.01.007
Citation: SI Dairong, WANG Mingjun, LIU Yongqin, SUI Xiaolin. Incoherent component ratio of laser scattering from rough sphere and cone targets[J]. LASER TECHNOLOGY, 2021, 45(1): 37-43. DOI: 10.7510/jgjs.issn.1001-3806.2021.01.007
shu

Incoherent component ratio of laser scattering from rough sphere and cone targets

  • 1.

    School of Automation and Information Engineering, Xi'an University of Technology, Xi'an 710048, China

  • 2.

    Shaanxi Civil-Military Integration Key Laboratory of Intelligence Collaborative Networks, Xi'an University of Technology, Xi'an 710126, China

  • 3.

    Science and Technology on Solid-state Laser Laboratory, The 11th Institute of China Electronics Technology Group Corporation, Beijing 100015, China

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  • Received Date: February 13, 2020
  • Revised Date: April 22, 2020
  • Published Date: January 24, 2021
    Graphical Abstract
    • Abstract
  • In order to study the effect of laser speckle on target detection, the theoretical analysis of the statistical characteristics of the scattering field when the plane wave laser irradiates the rough sphere and cone target was carried out by using the physical optics approximation method, and the second order statistical moment of the scattering field quantity of rough targets was derived. The variation of incoherent scattering component ratio of rough sphere and cone with roughness, scattering angle, radius, and target material is calculated numerically. The results show that the change of scattering angle has an effect on the incoherent component ratio of rough sphere scattering. The larger the roughness, the larger the proportion of incoherent component of target to the total scattering component. As the radius of the rough sphere becomes smaller, the surface of the sphere becomes rougher. The peak position of incoherent component ratio of cone target scattering varies with roughness, but its peaks are all located in the direction of specular reflection. The incoherent component ratio of metallic materials is smaller than that of non-metallic polished aluminum materials, and the radius change is proportional to the incoherent component ratio. The research results provide some reference value for the study of laser scattering characteristics of more complex targets and laser speckle detection and identification.
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    • References (21)
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