| 摘要: |
| 针对传统的船载雷达精度检验方法存在诸如协调量大、不能经常进行的不足，提出
了基于恒星观测的船载雷达精度检验方法。该方法以安装于船载雷达天线的星敏感器观测恒
星的数据为比对基准。推导了将星敏感器光轴在J2000.0地心惯性坐标系中的指向，转换为
以船载雷达三轴中心为原点的地平系中指向的公式。针对被跟踪目标在星敏感器中可见和不
可见，给出了两种不同的光电偏差修正方法。外场试验结果表明，利用该方法检验雷达精度
得到的结果与利用精轨卫星相比，残差小于0.3′，满足对雷达精度检验的要求。该方法不
仅可实现雷达精度检验的经常性，也可提高雷达精度检验的实时性和有效性。 |
| 关键词: 船载雷达 精度检验 恒星观测 光电偏差 星敏感器 |
| DOI： |
|
| 基金项目: |
|
| Accuracy test method for ship-borne radar based on star sensing |
| ZHONG De-an,ZHANG Tong-shuang,FENG Hong-kui,MAO Yong-xing |
| () |
| Abstract: |
| Traditional method of ship-borne radar accuracy tests by airplane trac
king object can not practice frequently, so a new method based on star sensing is presented, in which star sensing data obtained by means of star sensor is taken as comparing data. In this paper the transform formula of star sensor′s optical axis pointing from the J2000.0 inertial coordinate system to the horizontal coordinate system is deduced. Also, the main factors influencing test accuracy
are analyzed. According to the tracked object visible or invisible in star
sensor, two different methods of photoelectric deviation correction are advanced. The field tests show that the residual obtained by the method is less than 0.3＇ compared with tests by satellite, which meets the needs of the tests.With this method, not only accuracy tests of s
hip-borne radar can practice frequently but also the validity and real-time property can be improved. |
| Key words: ship-borne radar accuracy test star sensing photoelectric deviation star sensor |
《电讯技术》编辑部 