基于Helmert变换的GPS动力学轨道平滑
GPS Dynamic Satellite Orbit Smoothing Based on Helmert Transformation
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摘要: 从卫星的运动方程出发,提出了基于Helmert变换的动力学轨道平滑的方法。首先基于卫星运动方程得出在给定初始状态下的动力学积分轨道,然后在精密星历采样时刻建立动力学积分轨道与精密星历之间的Helmert变换模型,从而实现动力学轨道平滑。计算结果表明,该算法得到的动力学平滑轨道具有与IGS精密星历相当的精度。Abstract: A dynamic approach is developped,which is based on the motion equation of GPS,to produce the high frequency GPS orbits.The method fits dynamic-integrated orbits to precise orbits at the sampling epoch.A model based on Helmert transformation is introduced.Results show that the fitted orbits have a same precision of IGS SP3 orbits.
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