| GPS/BDS空间可见性与GDOP分析 |
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| 引用本文： | 向才炳,边少锋,吴泽民.GPS/BDS空间可见性与GDOP分析[J].海洋测绘,2013(6):33-35. |
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| 作者姓名： | 向才炳 边少锋 吴泽民 |
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| 作者单位： | 海军工程大学导航工程系,湖北武汉430033 |
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| 基金项目： | 973项目（2012CB719902）;国家自然科学基金项目（41274013,41374082）. |
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| 摘 要： | 先给出了卫星可见性模型,然后给出了GPS/BDS组合几何精度因子(GDOP)计算公式,通过近期一组实测的GPS与BDS星历计算了全球范围内不同观测高度处的组合星座卫星可见性与GDOP值,揭示了卫星可见性与GDOP值随空间观测高度变化的规律。
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| 关 键 词： | 全球定位系统 北斗卫星导航系统 可见性 几何精度因子 |
Space Visibility and GDOP Analysis of GPS / BDS |
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| XIANG Caibing,BIAN Shaofeng,WU Zemin.Space Visibility and GDOP Analysis of GPS / BDS[J].Hydrographic Surveying and Charting,2013(6):33-35. |
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| Authors: | XIANG Caibing BIAN Shaofeng WU Zemin |
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| Institution: | ( Department of Navigation, Naval University of Engineering, Wuhan 430033, China) |
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| Abstract: | Visibility and GDOP are important parameters which can evaluate performances of satellite navigation systems. The satellites＇ visibility model is given at first, and then the GDOP calculation formula of the GPS/ BDS integrated system is given. By using a set of recent ephemeris of GPS and BDS, the satellite visibility and GDOP of different observing heights in a global scope are calculated, which reveal the law of the variations of satellite visibility and GDOP with height. |
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| Keywords: | GPS BDS visibility GDOP |
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