光学精密工程2017，Vol.25Issue(9)：2333-2338,6.DOI:10.3788/OPE.20172509.2333
基于多光束照明的回波光场散斑抑制机理
Suppression mechanics of returning wave speckle with multibeams illumination
摘要
Abstract
In order to suppress the speckle effect of target surface induced by laser illumination ,and to increase the image quality of laser active imaging ,the multibeams illumination technology was adopted and its effect on rejection of returning wave speckle was investigated theoretically and experimentally . The splitting illumination model of multibeams was established .The speckle suppression principle of multibeams illumination in entire speckle superposed field and partly speckle superposed field was analyzed .On the basic of the principle and theory model ,the simulation experiment system was set up ,where the returning speckle contrast of single beam and multibeams illuminated on three different roughness targets with different splitting ways was evaluated by adjusting the energy distribution . The experiment result indicates that the contrast of homenergic four beam can be reduced to half of that of single beam ,w hich complies to the theory analysis and proof the feasibility of speckle rejection using multibeams illumination .关键词
激光主动探测/多光束照明/散斑效应/粗糙度Key words
laser active detection/multibeams illumination/speckle effect/roughness分类
信息技术与安全科学引用本文复制引用
王锐,史瑞新..基于多光束照明的回波光场散斑抑制机理[J].光学精密工程,2017,25(9):2333-2338,6.基金项目
中科院创新基金资助项目(No.CXJJ-17-M132) （No.CXJJ-17-M132）
