【摘要】 介绍了如何利用广播星历中的开普勒轨道参数和轨道摄动修正量计算GPS卫星轨道坐标的方法和步骤。编写了根据广播星历计算GPS卫星轨道坐标软件 ,并根据实际广播星历数据计算了GPS卫星轨道坐标 ,然后与同一历元的IGS精密星历所提供的每 15minGPS卫星的坐标进行了比较 ,探讨其轨道误差 ,并得出了一些值得借鉴的结论。更多还原

【Abstract】 In recent years,GPS technology has been widely used in the fields of surveying,navigation and meteorology,but the accuracy and real-time for GPS satellite ephemeris have been requested to be improved.The method and steps for calculating GPS satellite orbit coordinate by means of KEPLERIAN orbit parameters in broadcasting ephemeris and correction quanta of orbit perturbation are sated in the text.The software of calculating GPS satellite orbit coordinate according to the broadcasting ephemeris is compiled and GPS satellite orbit coordinate is calculated in accordance with the practical data of broadcasting ephemeris.Then,the calculation results are compared with those of GPS satellite provided by IGS precise ephemeris every fifteen minutes and their orbit errors are discussed,and some conclusions of reference are drawn,which are of some practical significance for understanding GPS broadcasting ephemeris orbit accuracy and its influence on the accuracy of real-time orientation.更多还原