一种GNSS广播星历轨道实时改正方法

来源 :山东科技大学学报(自然科学版) | 被引量 : 2次 | 上传用户:scfeiyang
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在最终及快速精密星历时延较长的前提下,提出利用广播星历及对应的超快速精密星历(观测部分)构建轨道误差序列,建立一种基于奇异谱分析(SSA)的全球卫星导航系统(GNSS)广播星历轨道实时改正方法,其目的是通过实时改正广播星历轨道,提高当前广播星历轨道的精度。以GPS卫星广播星历及其对应的超快速精密星历为例,对该方法的可行性进行了实验分析,结果表明:不同卫星、不同轨道方向的改善比是不同的;整体上看,径向、切向、法向轨道出现正改善比的卫星数占总卫星数的比率分别为86.7%、90%、93.3%。实验结果表明
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