船载雷达轴系误差修正参数的标定  

Shaft Parameters Calibration of a Ship-borne Radar

作　　者：李辉芬[1] 戴正旭[1] 向颉 

机构地区：[1]中国卫星海上测控部,江苏江阴214431

出　　处：《电讯技术》2018年第2期157-161,共5页Telecommunication Engineering

摘　　要：船载某C频段统一测控系统(UCB)因为光轴变化,使得坞内标定的角度零值、光机偏差等轴系误差修正参数不能准确校正设备的光轴指向偏差,而以光轴为基准放球标定的光电偏差修正参数无法使用。针对这个难题,在深入分析雷达轴系误差修正原理及参数标定方法的基础上,提出了基于测星数据动态标定雷达轴系误差参数、基于脉冲雷达电轴推算UCB光电偏差参数的替代方法,给出了相关数学模型,并利用实测数据进行了验算分析。试验结果表明,替代方法标定的参数准确合理,误差修正精度高,有效提升了数据处理精度。Due to the variation of optical axis of ship-borne unified C -b a n d TT＆C system （ UCB）,the pointing error of optical axis cannot be corrected accurately by the radar^ s zero position of the calibration at the dock,the axis error such as the optical-mechanical axis non-parallelism,and the error modifying coef-ficients of electric axis calibrated with optic axis are unavailable. To solve above problem,through analyzing calibration and correction method of radar axis e r ro r,an alterative method is proposed to calibrate the radar shafting error dynamically by using theodolite,along with electrical axis to get o p tical-electrica l axis non-parallelism parameter of UCB. The corresponding model is given and the processing results of real data in-dicate that the parameters marked by alternative method are accurate and reasonable,and the accuracy of the data is improved effectively.

关 键 词：船载雷达 光电偏差 光机偏差 参数标定 轴系参数 

分 类 号：TN957.52[电子电信—信号与信息处理]