对光纤阵列激光告警器定向算法的改进(英文)  

Improvement of directional detection algorithm for fiber-array laser warning sensor

作　　者：龚赤坤[1] 陈蔚[1] 杨丽[2] 

机构地区：[1]西南技术物理研究所,四川成都610041 [2]西南民族大学电气信息工程学院,四川成都610041

出　　处：《红外与激光工程》2011年第10期1949-1953,共5页Infrared and Laser Engineering

基　　金：国防十五,十一五预先研究项目

摘　　要：为了在不增加激光告警天线光学接收窗口数量的情况下提高光纤阵列激光告警器的告警定向精度,采用了一种新的激光告警定向算法,该算法将接收到的光纤延迟脉冲波形图从二维扩展到三维,并基于该脉冲波形的幅值强度矩阵进行角度解算,同时加入了虚警抑制。在实际测试中,对告警定向算法改进前后的告警角度分辨率进行了对比,其绝对误差由5°改善到了2°。结果表明:该改进算法可以显著地提高激光告警器的定向精度。In order to improve the accuracy of directional detection with the same number of optical channels in the fiber-array laser receiving antenna, a new directional detection algorithm was proposed, in which the two-dimension waveform data of time delay was expanded into three-dimension data, and the angles were calculated based on the matrix of echoed laser intensity, and the suppression of false alarm was also considered. Comparing with the alarm angle resolution of this algorithm before and after improved in the actual test, its absolute accuracy was improved significantly from 5° to 2°. The result shows that this algorithm can obviously improve the accuracy of directional detection.

关 键 词：激光告警 定向算法 角度分辨率 光纤延迟线 

分 类 号：TN971[电子电信—信号与信息处理]