惯导平台下舰载光电设备舷角正交测距技术  

Relative bearing orthogonal distance measurement technique for shipborne optoelectronic equipment based on inertial navigation platform

作　　者：李焱[1] 张海波[1] 张强[1] 董宇星[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,长春130033

出　　处：《仪器仪表学报》2014年第1期8-14,共7页Chinese Journal of Scientific Instrument

基　　金：国家863计划(2006aa701410);中国科学院知识创新工程领域前沿资助项目

摘　　要：受到海面高温、高湿以及舰载光电设备体积、激光测距功率等综合因素的影响,激光测距机在海天环境下威力大大减小,特别是远距离目标的测距能力几乎为零,依靠激光测距得到距离信息的舰载光电设备其对抗能力大大减弱。在惯导平台下通过速度滤波前馈实现电视闭环稳定跟踪并结合"舷角正交"测量技术,实现舰面环境下的目标测距。并在XX项目中得到较好的实际应用。实现该技术方法主要分为2步:当目标同时出现在2台光电设备视场内并且对比度满足图像提取阈值要求时,利用CA最小二乘滤波模型求出的惯导速度数据前馈到速度回路,结合电视脱靶量信息完成电视跟踪的闭环控制;将2台光电设备以舷角正交的方式进行目标信息交汇数据处理,得出距离信息。通过试验,验证了该技术可实现远距离目标的测距,海天环境下在测距精度不大于XX m时测距距离可达30 km,甚至更远,远远大于一般舰载激光测距系统。实现了舰载光电对抗设备远距离目标的无源测距,特别是提高了低空掠海目标的测距能力。在雷达静默状态下,可利用三维信息引导制导武器,实现对来袭目标的精确打击。Being influenced by the high temperature,high humidity on the sea surface, the volume of the shipborne optoeleetronic equipment and the output power of laser ranging, the power of the laser range finder is greatly reduced in such sea-sky environment;especially, the ability for detecting long-range target is near zero. The encounter ability of the shipbome optoeleetronic equipment that relies on laser ranging to obtain the range information is weakened greatly. Here in the paper, under the inertial navigation platform we use the filtered speed feed-forward technology to realize the TV closed loop stable tracking, and combine the ＂side angle orthogonal＂ intersection measurement tech- nology to realize the target distance measurement in ship-surface environment. The method has already been applied to the XX project successfully. There are two steps for realizing this technology. First, when the target appears simulta- neously in the fields of sight of two optoeleetronic tracking equipment and the image contrasts meet the threshold re- quirement for the image extraction, the speed data of the INS calculated with the CA filter model least-squares method is feed-forwarded to the speed loop, which is combined with the TV offset information to achieve the TV tracking closed-loop control. Secondly, the target data information is processed using two optoelectronic tracking instruments with the side-angle orthogonal method, and the distance information is obtained. The experimental results verify that the technology can realize the long distance target ranging;and the ranging distance can reach up to 30 km or longer when the ranging accuracy is not larger than XX m under the sea-sky environment, which is much larzer than that ofcommon shipborne optoelectronic ranging system. We can come to a conclusion that the passive ranging of the long- range ship-based optoelectronic equipment is realized with the side-angle orthogonal intersection method;especially, the ranging ability for low-altitude sea-skimming targets mensiona

关 键 词：惯导平台 舷角正交 测距 CA模型 舰载光电设备 

分 类 号：TN949.6[电子电信—信号与信息处理] TH76[电子电信—信息与通信工程]