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执行各种低轨卫星任务的官方在公布定轨结果的同时并没有公布星载接收机的天线相位中心校正(PCV)信息,而PCV误差是星载GNSS精密定轨必须考虑的主要误差源之一。以GRACE卫星任务为例研究PCV误差对低轨卫星精密定轨的影响,利用GPS观测数据直接估计与相位误差有关的天线相位偏差(PCO)和PCV参数,然后利用K波段测距系统和卫星激光测距仪数据进行定轨评定。 更多还原

【Abstract】 All the LEO mission officials have published precision orbit determination results without phase center variation(PCV) information.In fact,PCV error is one of the main source of errors for precise orbit determination(POD).In this paper,the PCV error model is established and based on GRACE real data,the PCV is gained directly from estimated parameters.Finally,some evaluations are conducted with K-band ranging data and satellite laser ranging data. 更多还原