激光告警系统中的光纤时间延迟测向技术研究  

An Optical Fiber Time Delay Directional Detection Technique Study of the Laser Warning Systems

作　　者：杨韫华[1] 曾钦勇[2] 万勇[2] 吕炳朝[1] 康波[1] 陈尉[3] 

机构地区：[1]电子科技大学自动化工程学院 [2]电子科技大学光电信息学院,四川成都610054 [3]西南技术物理研究所,四川成都610041

出　　处：《激光与红外》2005年第4期269-271,共3页Laser & Infrared

摘　　要：理论分析了光纤时间延迟技术基本原理,并对其在激光测向告警系统中的应用进行了实验研究。实验中采用高速数字滤波器滤除干扰信号,再通过测量光强重心的光纤延迟时间来解算激光辐射的入射角,从而降低了激光告警系统的虚警率,大幅度提高了延迟测向的准确性与稳定性。Some basic principles of the techniques of optical fiber time delay were analyzed theoretically, as well as its applications on the laser directional detection warning systems were studied experimentally. A high speed digital filtering was adopted in the experiments to filter the disturbed signals. Then the angle of incidence of laser radiation is calculated by measurement of the optical fiber delay time of the laser energy barycenter. Thereby, the ratio of false alarms in the laser warning systems was reduced greatly. The accuracy and stability of the delay directional detection are improved significantly.

关 键 词：激光告警 光纤时间延迟 脉冲波形 方位角 测向 数字滤波 

分 类 号：TN977[电子电信—信号与信息处理]