分析了影响GPS精密轨道插值传播误差精度的因素,给出了IGS精密星历误差在多项插值中的传播模型及传播误差的方差分量计算方法,为评定GPS插值轨道的精度提供了量化的客观依据,并用算例证明了卫星插值轨道的传播误差精度与精密星历误差精度在同一量级。
A method for computing propagation error variance of IGS precise ephemeris is given,which provides a quantitative basis for evaluating the interpolation accuracy of GPS orbit.A experiment shows that the interpolation accuracy considering the propagation error and accuracy of IGS precise ephemeris error are in the same order of magnitude.