星载GPS的多目标跟踪数据处理方法  

An observation data processing method based on GPS data onboard satellite in multiple targets task

作　　者：王丹丹 何晶[2] 戴正旭[2] 陈红英[2] 向颉 

机构地区：[1]中国天绘卫星中心,北京102102 [2]中国卫星海上测控部,江苏江阴214431

出　　处：《测绘科学》2017年第6期178-182,共5页Science of Surveying and Mapping

摘　　要：针对测量船外测数据对多个目标进行定轨精度较低的问题,该文提出了星载GPS数据、测量船外测数据的融合处理方法。在多目标测控任务中,航天测量船船载设备获取的外测数据仅包含一个主跟踪目标的测角数据和多个跟踪目标的测距数据,且测角数据精度较低,该文采用由星载GPS数据获取的等效测角数据和由测量船外测设备获取的测距数据进行定轨,经过分析试算,该方法有效弥补了船载外测设备测角数据精度较低的问题,提高了初轨确定的能力以及卫星星间距离的解算精度。Aiming at the problem that the low-accuracy of initial orbit determination causing by the low-accuracy angle measurement data, obtained by equipment onboard space tracking ship, a fusion processing method for GPS and the measured data by onboard equipment was proposed. In multiple targets task, the measured data by equipment onboard space tracking ship contain angle measurement of the major target and ranging measurement of multiple targets, and the accuracy of angle measurement data is low. To resolve this problem, the initial orbit can be calculated by equivalent angle measurement data from GPS and the ranging measurement data from onboard equipment. Through calculation analysis, the accuracy of initial orbit determination and the distance between satellites could be improved.

关 键 词：多目标任务 星载GPS 初轨确定 星间距离 精度计算 

分 类 号：P228[天文地球—大地测量学与测量工程]