摘要
射电望远镜极轴的安装定位是否准确直接影响其指向精度和成像质量,通过运用光学CCD原理精确测量射电望远镜极轴偏差角度,用以安装校准极轴,达到提高射电望远镜指向精度和成像质量的效果,并且结合计算机可实现多极轴同时校准,提高工作效率。同时,基于CCD技术可以及时发现天线极轴出现的偏差并进行修正,提高了数据的质量。
This paper discusses a method to precisely adjust the polar axis of a radio telescope antenna with a CCD camera. The accuracy of the polar axis is crucial to imaging of a radio telescope, because pointing accuracy and image quality are related to the accuracy. The deviation angle of the polar axis can be precisely measured by a CCD. The measurement method can improve pointing accuracy and image quality. If a computer system is further used, the method can adjust multiple radio antennas at the same time, which increases the efficiency. The detection and correction of the deviation of the polar axis are timely with this method which ensures the improvement of data quality.
出处
《天文研究与技术》
CSCD
2011年第1期15-20,共6页
Astronomical Research & Technology
基金
新一代厘米-分米波射电日像仪(ZDYZ2009-3)资助
关键词
日像仪
极轴
CCD
赤纬
分辨率
Radio heliograph
Polar axis
CCD
Declination
Resolution
