一种雷达卫星标校中的野值剔除方法  

An Outlier Elimination Method in Satellite Calibration for Radar

作　　者：王建富[1] 吴金海[2] 钮俊清[1] 郭佳意[1] 

机构地区：[1]中国电子科技集团公司第三十八研究所孔径阵列与空间探测安徽省重点实验室,安徽合肥230088 [2]太原卫星发射中心,山西太原030027

出　　处：《舰船电子对抗》2017年第3期54-57,共4页Shipboard Electronic Countermeasure

摘　　要：通过卫星标校方式提高雷达系统测量精度时,雷达获取的测量点迹对标定结果的影响巨大,尤其存在野值点的情况下,雷达系统误差标定可能失效。提出了基于雷达卫星标校的野值剔除方法,首先将测量值与真实星历值对比,得到雷达的初始系统误差和随机误差,并以此确定测量点迹的波动范围,排除部分野值;然后利用剔除野值后的数据,以同样的方式确定波动范围,对测量点迹重新进行野值剔除;最后利用过滤后的测量点迹进行雷达系统误差的标定。实验结果表明,该方法得到的雷达系统误差和随机误差变小,能够提高雷达系统测量精度。In the process of improving the measurement precision of radar system through satellite calibration mode,the original measured trace obtained from radar has a great influence on the cali-bration results. Especially with outliers existing,the calibration for the radar system error ceases to be effective. In this paper, an outlier elimination method based on satellite calibration for radar is proposed. Firstly,by contrasting the measured value to real value of the same satellite track,the in-itial radar system error and random error are achieved,which is used to get the fluctuate range of measured trace and further to remove partial outliers. Then in the same way, uses the measured trace after outlier elimination,the new fluctuate range is determined and used to eliminate outliers. At last the satellite calibration of radar system error is carried on by using the measured value after the second outlier elimination. Experimental results show that the radar system error and random error achieved by the proposed approach become small,which can improve the measurement preci-sion of radar system.

关 键 词：卫星标校 野值剔除 系统误差 

分 类 号：TN957.51[电子电信—信号与信息处理]