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.
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)