1″级四面体组合合作目标激光雷达散射截面实验与理论研究  

Experimental and theoretic study on laser radar cross section of the cooperative targets with 1″order corner reflectors

作　　者：谢品华[1] 江荣熙[1] 王亚萍[1] 郑小兵[1] 刘文清[1] 丁小白 卫丕昌[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所,航空航天部三院三部,中国科学院长春光学精密机械研究所

出　　处：《激光技术》1994年第3期172-177,共6页Laser Technology

摘　　要：采用激光雷达散射截面（ＬＲＣＳ）测量系统，在１．０６μｍ激光波段，测量了１″级四面体角反射器俯仰角０°时，方位角±５０°范围的ＬＲＣＳ，并对由四面体角反射器组合而成的梯形合作目标进行了俯仰角０°～２４°变化时，方位角±６４°范围的激光雷达散射截面测量，角分辨率１°。给出了实验曲线与数据，实验结果与理论计算较好吻合。表明合理选择角反射器组合形式，保证加工精度，可以增强反射信号，扩大光测范围，实现在恶劣条件下，雷达的远程和大角度范围跟踪。最后讨论了影响测量精度的原因。Under the radiation of 1.06μm laser beam,the Laser Radar Cross Sec-tion(LRCS)of 1″order corner reflectors have been investigated between-50°～50°azimuth angle when elevation angle is 0°,and the LRCS of the ladder-shaped coopera-tive targets combined with corner reflectors have been measured from-64°～64°azimuth angle as elevation angle range varing from 0°～ 24°by using LRCS measuring system.The angular resolution is 1°.The measured data are reported.The experimen-tal results are in agreement with the theoretical estimate.It indicates that increasing signal intensity and expanding angle of aspect can be controlled by selecting proper com-bined form and ensuring accurary of process.So laser radar tracking is realized in long distance,wide aspect angle under the bad environment. Some influences on the mea-surement are also discussed.

关 键 词：激光雷达 LRCS 测量 角反射器 

分 类 号：TN958.98[电子电信—信号与信息处理]