| 王仲锋,余龙飞,刘志全.双频GPS精密定位的实验与分析[J].矿产勘查,2012,3(1):69-72 |
| 双频GPS精密定位的实验与分析 |
| Experiment and analysis on the dual-frequency GPS precise point positioning |
| 投稿时间：2011-07-13 |
| DOI： |
| 中文关键词: GPS 精密单点定位 精密星历 |
| 英文关键词: GPS precise point positioning(PPP) precise ephemeris |
| 基金项目: |
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| 中文摘要: |
| GPS精密单点定位技术是近些年来人们研究的热点。利用IGS跟踪站的精密星历进行单点定位,可以直接得到厘米甚至毫米级的高精度的ITRF框架下的空间直角坐标。但观测多长时间可满足用户的精度要求人们并不清楚。文章利用CORS站的观测数据和IGS站联测的数据,使用Leica Geo Office软件,对CORS站的观测数据从10 min开始,依次增加10 min,直至10 h进行分段处理,得到不同时长的精密单点定位的在ITRF框架下坐标结果和精度,以研究定位结果的收敛性。结果表明,观测时长50 min,点位精度高于5 cm；观测时长220 min,点位精度高于1 cm。 |
| 英文摘要: |
| GPS precise point positioning technology is a research hot spot in recent years. Using precise ephemeris of IGS tracking stations to position, the spatial rectangular coordinates under the ITRF coordinate reference frame can be obtained directly in centimeter or even millimeter accuracy. However, it is not clear that how long the observation time is to meet the requirements of the user. To study the astringency of PPP, in this paper, the PPP coordinates and their accuracy under the ITRF coordinate reference frame are obtained to use the CORS observation data from 10 minutes, followed by 10 minutes, up to 10 hours and the data associated IGS tracking stations , as well as the Leica Geo Office software. The results show that the positional accuracy to be higher than 5cm can be got when observing 50 minutes, and higher than 1cm when 220 minutes. |
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