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GPS预报星历和钟差的精度及对标准定位服务的影响 被引量:2

ON GPS FORECASTING EPHEMERIS AND CLOCK CORRECTION ACCURACY AND EFFECTS ON STANDARD POINT POSITIONING
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摘要 利用IGS的数据和产品分析了1995—2010年的预报星历的精度、预报钟差的精度和标准单点定位的精度,结果显示,所有的精度都有逐渐提高的趋势:广播星历的精度(SISRE)小于2 m,钟差的预报精度为(6~20)×10-9s,标准定位的平面精度为1.0~7.0 m,高程精度为2.5~27.0 m。 Using IGS data and products the forecasted ephemeris accuracy and the forecasted clock correction accuracy as well as the standard single point positioning accuracy during 1995 to 2010 is analyzed. These analyses show that all the accuracy trend to increase gradually, such as the forecast ephemeris accuracy (SISRE) is below 2 m, and the predicted clock correction accuracy is (6 -20)×10-9 s, the standard positioning accuracy is 1.0 -7. 0 m in the horizontal and 2.5 - 27.0 m in the vertical.
作者 王爱生 王飞
出处 《大地测量与地球动力学》 CSCD 北大核心 2012年第6期76-80,共5页 Journal of Geodesy and Geodynamics
基金 国家自然科学基金(41174032) 江苏师范大学科研基金(09XLR18)
关键词 GPS 实时服务 广播星历 钟差 标准定位服务 GPS real-time serve broadcast ephemeris clock correction SPS ( Standard Point Positioning Serve)
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