摘要
为了减弱由于广播星历拟合引起的误差,本文提出了一种基于动力学轨道改进的GLONASS卫星位置算法。该算法仅采用GLONASS广播星历信息就能够提高GLONASS卫星位置坐标的计算精度。算例表明,该方法能够有效减弱GLONASS卫星广播星历的拟合误差,卫星位置的精度损失从0.5m降到mm级;外推2-3h,精度损失也仅在cm级水平。
A new method of satellite ephemeris calculation for GLONASS is introduced, which is based on dynamic trajectory recovering. More accurate satellite position can be gotten with no other information but the broadcast ephemeris parameters. The given cases show that all the GLONASS broadcast ephemeris' fitting errors are almost eliminated entirely. The imported error of the propagated perturbation orbit is deducted to several millimeters from 0.5 meter.
出处
《测绘科学》
CSCD
北大核心
2007年第4期8-9,31,共3页
Science of Surveying and Mapping
关键词
GLONASS
星历计算
精密定轨
GLONASS
ephemeris calculation
precise orbit determination
