基于光学基准的无线电跟踪雷达电轴参数联合标定

针对大型无线电跟踪雷达系统电轴参数标定过程中存在的人工判读依赖性大、只能进行单项参数标定、标定精度难以提高、标定过程较为复杂以及部分参数不能定量标定等问题,提出了新的电轴参数联合标定方法。通过对远场空间合作目标的跟踪测量,建立归一化误差矢量,利用光学脱靶量与雷达动态滞后(误差电压)之间的定量关系,对雷达光电偏差、定向灵敏度、交叉耦合系数等参数进行统一联合迭代求解。该方法可同时精确标定光电旋转矩阵、光电靶面的旋转角等参数,对环境和设备要求低,在静态或动态远场条件下均简便易行,可同时适用于固定站址与移动站址大型跟踪雷达系统。实验表明该方法标定结果可信。

Combined calibration of radio tracking radar electro-axis parameters based on optical reference

In the calibration or check process of electro-axis parameters of a radio tracking radar,such as photoelectric deviation,directional sensitivity,cross coupling coefficient,there are some universal problems:there is great attachment of manual interpretation;only one parameter can be calibrated in one calibration process;it is difficult to improve the accuracy of the result;the calibration process is complex and some parameters can not be calibrated quantitatively,and so on.For those problems,a new method for combined calibration of the radar electro-axis parameters is proposed.By tracking of space cooperative target,and establishing normalized error vector,the parameters such as the radar photoelectric deviation,directional sensitivity,and cross coupling coefficient,can be iteratively calibrated in accordance with the quantitative relationship between the optical miss distance and the radar dynamic lags based on the creditability of optical measurement precision.The photoelectric round-matrix and the round angle of photoelectrical target screen can also be calibrated.There is no high requirement for equipment and environment.Its requirement for condition and equipment is low and it is convenient to operate under the condition of static or dynamic far fields,and suitable for the radio tracking radars of fixed or mobile station.The experimental results show that the calibration of the new method is reliable.