郭靖, 赵齐乐, 李敏, 胡志刚. 利用星载GPS观测数据确定海洋2A卫星cm级精密轨道[J]. 武汉大学学报 ( 信息科学版), 2013, 38(1): 52-55.
引用本文: 郭靖, 赵齐乐, 李敏, 胡志刚. 利用星载GPS观测数据确定海洋2A卫星cm级精密轨道[J]. 武汉大学学报 ( 信息科学版), 2013, 38(1): 52-55.
GUO Jing, ZHAO Qile, LI Min, HU Zhigang. Centimeter Level Orbit Determination for HY2A Using GPS Data[J]. Geomatics and Information Science of Wuhan University, 2013, 38(1): 52-55.
Citation: GUO Jing, ZHAO Qile, LI Min, HU Zhigang. Centimeter Level Orbit Determination for HY2A Using GPS Data[J]. Geomatics and Information Science of Wuhan University, 2013, 38(1): 52-55.

利用星载GPS观测数据确定海洋2A卫星cm级精密轨道

Centimeter Level Orbit Determination for HY2A Using GPS Data

  • 摘要: 系统研究了基于国产星载双频GPS接收机的海洋2A(HY2A)卫星精密定轨问题,并对星载双频GPS接收机天线相位中心进行了校正。结果显示,HY2A卫星径向定轨精度可达1~2cm,天线相位中心标定精度为mm级。相关成果可应用于我国后续所有搭载双频GPS接收机的对地观测卫星计划。

     

    Abstract: The first Chinese oceanographic satellite——HY2A was lanched on 16 August 2011 into a sun-synchronous orbit with an altitude of about 970 km.Precise orbit determination(POD) for HY2A is essential for the scientific applications of this mission.With the precision and navigation data analyst(PANDA) software,the precise orbits for HY2A are determined using only onboard GPS observations,meanwhile GPS data are used to model the consistent phase center offset(PCO) and phase center variation(PCV) of onboard receiver antenna.The orbit accuracy is assessed using a number of tests,which include analysis of observation residuals,orbit fits with CNES orbits,and satellite laser ranging residuals.The results show that 1~2 cm radial orbit accuracy for the HY2A has been achieved.These contributions could be used for continued low-earth orbiters(LEO) equipped indigenous onboard GPS receiver.

     

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