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.
出处
《激光与红外》
CAS
CSCD
北大核心
2005年第4期269-271,共3页
Laser & Infrared
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
laser warning
optical fiber time delay
pulse waveform
azimuth angle
directional detection
digital filtering
