摘要
通过STK软件对BDS、QZSS、IRNSS卫星星座结构仿真的基础上,选择BDS、BDS/QZSS、BDS/IRNSS、BDS/QZSS/IRNSS、QZSS/IRNSS等定位方式对中国大陆单观测站与整体范围最小可见卫星数、GDOP值、定位误差进行覆盖分析,确定了QZSS与IRNSS在我国的覆盖范围及对BDS定位性能增强作用的评估。结果表明,BDS/QZSS/IRNSS组合在我国的最小可见卫星数可达16~21颗,GDOP值在1.4~1.7之间,定位误差达5.5~7.5m,相比单BDS定位最小可见卫星数增加了6~8颗,GDOP值减小了0.3~0.5,定位精度提升了2.0~3.0m,对华南地区的定位性能有明显提升,而对东北等地区定位性能的提升较小。
This paper, based on BDS, QZSS and IRNSS satellite constellations simulation by STK software, selects BDS, BDS/QZSS, BDS/IRNSS, BDS/QZSS/IRNSS, QZSS/IRNSS and other positioning methods for China＇s single observation station and the overall minimum visible satellite number, GDOP value, positioning error coverage analysis, in order to determine the coverage of QZSS and IRNSS in our country and evaluate the performance of BDS positioning. The result shows that the BDS/ QZSS/IRNSS combination in the smallest visible satellite in China can reach to the number of up to 16- 21, in which the GDOP value is between 1.4-1.7, the positioning error of 5. 5-7.5 m, compared with the single BDS minimum visible satellite the number increases by 6-8, and GDOP decreases by 0. 3-0. 5, to enhance the positioning accuracy of 2. 0-3.0 m; it significantly enhances the positioning performance in Southern China while small in Northeast China.
作者
徐炜
贾雪
王涛
XU Wei;JIA Xue;WANG Tao(School of Geodesy and Geomatics, Anhui University of Science and Technology, Huainan 232001,China)
出处
《测绘工程》
CSCD
2018年第1期31-36,共6页
Engineering of Surveying and Mapping
基金
国家自然科学基金资助项目(41474026)
淮南矿业(集团)有限责任公司项目(HNKY-JTJS(2013)-28)
安徽省国土资源厅科技项目(2011-K-22
2011-K-18)
关键词
STK
覆盖范围
定位性能
评估
STK
coverage
positioning performance
evaluation
