结合珞珈一号卫星轨道数据，分析地球自转参数（ERP）预报误差对低轨卫星精密轨道预报的影响。结果表明，ERP预报误差主要对轨道切向和法向产生影响，对径向影响较小。当预报时间为10 d时，切向误差可达到dm级，这对cm级定位会产生较大影响。"/>
The impact of ERP prediction error on LEO autonomous orbit determination is analyzed with the orbit data from Luojia-1A satellite. The test results indicate that ERP have a significant impact on the tangent and normal direction, with less impact on the radical direction. With 10-days prediction, the impact on the tangent direction reaches a decimeter level, which will have a major impact on the precise orbit determination."/>
ERP预报误差对低轨卫星精密轨道预报的影响
Abstract：The impact of ERP prediction error on LEO autonomous orbit determination is analyzed with the orbit data from Luojia-1A satellite. The test results indicate that ERP have a significant impact on the tangent and normal direction, with less impact on the radical direction. With 10-days prediction, the impact on the tangent direction reaches a decimeter level, which will have a major impact on the precise orbit determination.
