混沌噪声背景下微弱激光信号的放大与检测技术  

Amplification and detection technology of weak laser signal in chaotic noise background

作　　者：贾兰芳[1] 周小芳[1] JIA Lanfang;ZHOU Xiaofang(Changzhi University,Changzhi Shanxi 046011,China)

机构地区：[1]长治学院

出　　处：《激光杂志》2019年第11期49-52,共4页Laser Journal

基　　金：山西省高等学校教学改革创新项目(No.J2017119);山西省长治学院“1331工程”重点创新团队资助

摘　　要：在混沌噪声背景下,现有的微弱激光信号放大检测技术存在检测速度较慢、检测准确度较低的问题,提出一种新的混沌噪声背景下微弱激光信号的放大与检测方法。利用频率尺度变换方法对不同的微弱激光信号进行处理,通过噪声强度统一化处理系统参数,根据系统参数对不同频段的信号进行随机共振处理,增强信号强度,完成微弱激光信号的放大。对放大后的信号进行信号阵元接收模型的构建,通过多路传感器盲分离提取有用的信号,实现微弱激光信号的检测。对仿真实验数据进行分析,根据分析结果可知,所提方法能够有效增强信号的幅值,微弱激光信号的检测速度和检测准确度均明显提高。In the chaotic noise background,the existing weak laser signal amplification and detection technology has the problems of slow detection speed and low detection accuracy.The frequency scale transformation method is used to process different weak laser signals.The system parameters are unified by noise intensity,and random resonance pro-cessing is carried out on the signals of different frequency bands according to the system parameters.So as to enhance the signal strength and complete the amplification of weak laser signals.The signal array receiving model is constructed for the amplified signal,and the useful signals are extracted by blind separation of multi-channel sensors to realize the detection of weak laser signals.According to the analysis results of simulation experimental data,the proposed method can effectively enhance the amplitude of the signal,and the detection speed and accuracy of weak laser signal are sig-nificantly improved.

关 键 词：混沌噪声背景 微弱激光信号 信号强度 放大 检测 

分 类 号：TN911[电子电信—通信与信息系统]