航天测量船角度系统误差偏大问题的分析与解决

在测量船某型号任务的数据处理过程中，通过比对两套外测设备的原始测量数 据，发现方位角的系统误差偏大。针对设备严重超出精度指标的问题，通过进一步的试算， 利用箭载GPS数据进行比对，仔细分析了引起方位角系统误差偏大的各种因素，逐步排查后 找出了问题原因，并由船载设备进行修正。通过排查分析，验证了船载设备零值修正 处理方法的正确性，为船载系统类似问题的解决积累了经验。

Analysis of and Solution to Relatively Large Azimuth System Error Problem in a Task by Space TT&C Ship

In data processing of a task by space TT&C ship,it is found out that the azimuth error is relatively large through comparing t he data of two measurement equipment.By calculating and comparing the data of rocket-borne GPS,possible factors causing th e large azimuth error are analysed and the reason is found.The error is co rrected by equipment onboard ship. The zero-value correction method proposed is validated through investigation and analysis,which provides reference for such p roblems.