摘要
着舰引导雷达工作环境恶劣,要求精度高,需要定时进行标校,而普通标校方法没有考虑航母运动对标校结果的影响,并且目标位置真值的获取方法精度不够,为此,提出了一种基于EMD和GPS的航母舰载机着舰引导雷达的标校方法,首先建立了舰载雷达常用的坐标系并推导了它们之间的转换关系,然后研究了经验模态分解去噪的原理并提出了一种分量判别函数,接着给出了航母姿态测量方案和详细的标校过程,最后在对航母运动姿态建模的基础上进行了仿真。仿真结果说明,论文提出的标校方法可以很好地发现舰载机着舰引导雷达的方位、俯仰和距离的系统误差。
The landing guidance radar provide effective protection for the safe landing of aircraft carriers ,but with their service time increases ,the radar system errors will gradually increase .In order to ensure the accuracy of the radar require-ments ,calibration of the radar needs to be conducted regularly .A kind of calibration method for the landing guidance radar based on EMD and GPS and simulate the feasibility of the method is presented .First ,common coordinate systems for ship-borne radar are established and a conversion relationship between them ,then study the empirical mode decomposition denois-ing principle and proposed a discriminant function for component is derived ,then a detailed process of calibration is given .Fi-nally simulation is done on the basis of carrier motion attitude .Simulation results show that the calibration method proposed in this paper can find the system error of carrier aircraft landing guidance radar azimuth ,elevation and distance .
出处
《计算机与数字工程》
2014年第10期1869-1874,共6页
Computer & Digital Engineering
关键词
着舰引导雷达
标校
GPS
EMD去噪
坐标系
landing guidance radar
calibration
GPS
EMD de-noising
the coordinate system
