佳木斯66米深空天线指向标校的自动化实现

Realization of Automatic Pointing Correction and Calibration for 66m Deep-Space Antenna in Jiamusi

天线的指向精度是系统的关键指标,影响任务执行的质量。指向改正和标校是提高精度的基本途径。佳木斯66米深空探测系统现有的指向标校工作需要人为制定计划,手动完成大量宇宙天体目标的跟踪扫描,工作期间要不断重复设置目标、操作天线。设计并完成了一套完整的指向标校自动化软件,能够完成标校计划的自动规划和标校观测计划的自动执行,提高了扫描效率,极大地降低了人工操作和干预程度,解放了人力。该系统使标校目标的观测方位和俯仰更加均匀,使结果用于指向改正模型解算时能更好地提高指向精度。

As the key parameter of the attenna system, the pointing accuracy affects the quality of the task implementation. A basic way of improving accuracy is to do pointing correction and calibration, which needs plenty of work that must be done manually for the 66m deep space antenna in Jiamusi, including task planning and tracking scan of a large number of celestial objects. The operation of setting various targets and controlling the antenna have to be repeated hundreds of times. To increase the efficiency of targets scanning, and to reduce the manual operations a complete set of automation software for pointing calibration has been designed and developed, which makes it possible for automatic programming and execution of calibration observation planning. The practical results show that the distribution of scanning sources can be more uniform, which helps to improve the accuracy of pointing corrections when applied in pointing correction model.