| 基于广播星历的GAMIT基线解算方法及精度分析 |
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| 引用本文： | 高旺,高成发,潘树国,夏炎,王胜利.基于广播星历的GAMIT基线解算方法及精度分析[J].测绘工程,2014(8):54-57. |
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| 作者姓名： | 高旺 高成发 潘树国 夏炎 王胜利 |
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| 作者单位： | 东南大学交通学院;东南大学仪器科学与工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(41074021) |
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| 摘 要： | GAMIT解算过程中通常要求精密的轨道文件作为卫星位置基准,针对在实际工程应用中因精密星历公布滞后或网络等因素无法及时获取IGS精密星历产品的特殊情况,提出基于广播星历进行GAMIT基线解算的方法,并与使用IGS最终星历的解算结果进行比较分析.实验结果表明,在309 km范围内,使用广播星历的坐标分量解算结果与使用IGS最终星历相比差值优于10-8数量级,可以满足常规的工程应用需求.
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| 关 键 词： | GAMIT 广播星历 GPS 基线解算 IGS |
The GAMIT baseline-solution method based on broadcast ephemeris and precision analysis |
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| Institution: | GAO Wang,GAO Cheng-fa,PAN Shu-guo,XIA Yan,WANG Sheng-li( 1.School of Transportation, Southeast University, Nanjing 210096, China; 2.School of Instrument Science and Engineering,Southeast University, Nanjing 210096, China;) |
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| Abstract: | GAMIT calculation process usually requires the precise orbit data as the satellite position reference.Focused on the specific situations that the IGS precise ephemeris products cannot be gotten timely due to the released delay of precise ephemeris or the network factor and other factors in practical engineering applications,the GAMIT baseline calculation method based on broadcasting ephemeris is put forward.And the results calculated from the method are compared with the results based on IGS final ephemeris.Experimental results show that within 309 km the coordinate components calculated from the presented method is better than 10 8 magnitude compared with the results based on IGS final ephemeris.So it can meet the needs of conventional engineering applications. |
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| Keywords: | GAMIT broadcasting ephemeris GPS baseline calculation IGS |
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