基于动态水平仪的非行进间工作雷达姿态角补偿方法

Attitude Angle Compensation Method for Non-Marching Operation Radar Based on Dynamic Gradienter

测角精度作为雷达系统性能的核心指标,直接影响导航等装备的工作效能。姿态角误差是影响雷达测角误差的重要因素,对测角精度具有重大影响。针对非行进间工作雷达,提出一种基于动态水平仪的姿态角补偿方法。首先,明确基本坐标和复合坐标变换公式;然后,建立雷达天线阵面与动态水平仪位置关系;最后,通过初始标定和求解姿态矩阵实现天线阵面姿态角补偿。利用某相控阵雷达进行姿态角补偿试验,测试表明:该方法精度高、成本低,天线阵面姿态角误差小于1 mil,可有效提高雷达测角精度,满足系统指标要求。

As the core indicator of the performance of radar system,angle accuracy directly impacts the task performance of equipment including navigator.The attitude angle error is the main factor of radar angle error,which has a great influence on angle accuracy.An attitude angle compensation method based on dynamic gradienter is proposed for the non-marching operation radar.Firstly,the basic and compound coordinate transformation formulas are defined.And then,the position relationship between antenna and dynamic gradienter is established.Finally,the attitude angle compensation of antenna is realized through the initial calibration and attitude matrix solving.The attitude angle compensation experiment with phased array radar is carried out,showing that the method has precision and low cost,and the attitude angle error is less than 1 mil after compensation,can effectively enhance the radar angle accuracy,meeting the index requirement of the system.