红外与激光工程
紅外與激光工程
홍외여격광공정
INFRARED AND LASER ENGINEERING
2011年
10期
1949-1953
,共5页
激光告警%定向算法%角度分辨率%光纤延迟线
激光告警%定嚮算法%角度分辨率%光纖延遲線
격광고경%정향산법%각도분변솔%광섬연지선
laser warning%directional detection algorithm%angular resolution%fiber delay lines
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.
為瞭在不增加激光告警天線光學接收窗口數量的情況下提高光纖陣列激光告警器的告警定嚮精度,採用瞭一種新的激光告警定嚮算法,該算法將接收到的光纖延遲脈遲波形圖從二維擴展到三維,併基于該脈遲波形的幅值彊度矩陣進行角度解算,同時加入瞭虛警抑製.在實際測試中,對告警定嚮算法改進前後的告警角度分辨率進行瞭對比,其絕對誤差由5°改善到瞭2°.結果錶明:該改進算法可以顯著地提高激光告警器的定嚮精度.
위료재불증가격광고경천선광학접수창구수량적정황하제고광섬진렬격광고경기적고경정향정도,채용료일충신적격광고경정향산법,해산법장접수도적광섬연지맥충파형도종이유확전도삼유,병기우해맥충파형적폭치강도구진진행각도해산,동시가입료허경억제.재실제측시중,대고경정향산법개진전후적고경각도분변솔진행료대비,기절대오차유5°개선도료2°.결과표명:해개진산법가이현저지제고격광고경기적정향정도.
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.
