光电信息探测方法的改进研究  

Research on improvement of photoelectric information detection method

作　　者：温宏愿[1] 刘小军[1] 张朋[1] WEN Hongyuan;LIU Xiaojun;ZHANG Peng(Taizhou Institute of Science and Technology,Nanjing University of Science and Technology,Taizhou Jiangsu 225300,China)

机构地区：[1]南京理工大学泰州科技学院

出　　处：《激光杂志》2018年第12期23-27,共5页Laser Journal

基　　金：泰州市科技支撑计划(农业)项目(No.TN201610);江苏省"333工程"科研资助项目(No.BRA2016177);江苏省高校"青蓝工程"人才项目资助(No.QL2016015)

摘　　要：传统采用光电直接探测方法对光电信息进行探测时,受到散粒噪声影响,探测耗时长,不能对微弱探测目标的光电信号形态进行准确探测。提出改进光电信息探测方法,通过光电相干探测模型获取光电信号输出电流,采用基于光电粒子自滤波的探测算法,通过采样重要度重采样光电粒子自滤波对光电信号输出电流进行滤波后,获取SIR光电粒子,通过新生”光电粒子的孕育方法,使用新生光电粒子取代权重较低的存活光电粒子后,获取的光电粒子集即为待探测的微弱目标,基于待探测微弱目标存在机率判断是否存在微弱目标后,获取微弱目标的光电信号形态。实验结果表明,所提方法可在高信噪比环境中有效探测出微弱光电信息目标,且探测过程耗时短,探测结果可靠性强。Traditionally,when the photoelectric information is detected by the photoelectric direct detection method,it is affected by the shot noise,and the detection takes a long time,and the photoelectric signal shape of the weak detection target cannot be accurately detected. An improved photoelectric information detection method is proposed.The photoelectric signal output current is obtained by the photoelectric coherent detection model. The detection algorithm based on the photoelectric particle self-filtering is used to filter the photoelectric signal output current by sampling the re-sampling photoelectric particle self-filtering to obtain the SIR photoelectric particles. Through the nascent photoelectric particle gestation method,using the new photoelectric particles to replace the surviving photoelectric particles with lower weight,the acquired photoelectric particle set is the weak target to be detected,and based on the probability of the weak target to be detected to judge the exists of the weak target. After that,the shape of the photoelectric signal of the weak target is obtained. The experimental results show that the proposed method can effectively detect the weak photoelectric information target in the high SNR environment,and the detection process takes a short time and the detection result is reliable.

关 键 词：光电探测 相干探测 光电粒子自滤波 SIR光电粒子 微弱目标 形态 

分 类 号：TN247[电子电信—物理电子学]