【摘要】 GPS卫星星历是影响GPS定位精度和实时性的主要因素之一。通过比较现有GPS卫星星历的时延性,得出只有广播星历和IGS提供的预报星历才能满足GPS定位的实时性要求,并利用实际数据分析了这两种星历对实时定位的精度影响,为今后的GPS实时定位工作提供了帮助。更多还原

【Abstract】 Ephemeris of GPS satellite is one of the mainly factors effecting on the accuracy and latency of positioning.Comparing the latency of ephemeris available,we find only broadcast ephemeris and forecasting ephemeris provided by International GPS Service(IGS) can meet the need of real-time baseline solution.The accuracy of the baseline solution with the two ephemeris are analyzed by the test using actual data.It can be useful to realtime positioning.更多还原