华北区域分米级北斗地基增强服务系统构建及精度分析
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摘要
利用国家级北斗连续运行基准站和省级区域北斗CORS站,基于国家卫星导航定位服务平台,通过改造和直接利用的方式,在华北平原构建了我国首个跨区域北斗分米级地基增强服务系统。经采用双频终端实地测试,该系统覆盖京津冀晋全部区域及内蒙古部分区域,采用GPS+北斗双模定位静态精度达到分米级,动态定位精度达到亚米级,单北斗模式定位精度略低,但仍在分米-亚米量级,极大地提高了我国北斗导航系统的高精度应用能力,拓宽了我国北斗民用导航的应用范围和领域,可满足高精度北斗实时导航、定位服务的应用需求。
Based on the national satellite navigation and positioning service platform, Beidou ground based augmentation system(GBAS) was constructed directly using the national continuously operating reference station and transforming the provincial CORS stations, which covered the area in Northern China. After the test using the dual frequency terminal, it is proved that this system can cover all areas of Beijing, Tianjin, Hebei and Shanxi province and part areas of Inner Mongolia. The positioning precision is about decimeter level when using dualmode with GPS+Beidou in static test and decimeter to sub-meter level in automobile test. The single mode of Beidou positioning accuracy is slightly lower. This system greatly improves the high precision application ability and broadens the application scope and field of Beidou navigation system in china, which can meet the application requirements of high precision real-time navigation and positioning service due to Beidou navigation system.
Based on the national satellite navigation and positioning service platform, Beidou ground based augmentation system(GBAS) was constructed directly using the national continuously operating reference station and transforming the provincial CORS stations, which covered the area in Northern China. After the test using the dual frequency terminal, it is proved that this system can cover all areas of Beijing, Tianjin, Hebei and Shanxi province and part areas of Inner Mongolia. The positioning precision is about decimeter level when using dualmode with GPS+Beidou in static test and decimeter to sub-meter level in automobile test. The single mode of Beidou positioning accuracy is slightly lower. This system greatly improves the high precision application ability and broadens the application scope and field of Beidou navigation system in china, which can meet the application requirements of high precision real-time navigation and positioning service due to Beidou navigation system.
引文
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[8]黄永帅,史俊波,欧阳晨皓,等.千寻北斗地基增强网络下的实时观测数据解码及定位性能分析[J].测绘通报,2017(9):11-14.
[9]刘艳国,秘金钟,李得海,等. BDS基线解算不同时段精度差异分析[J].测绘通报, 2016(6):1-5.
[2]杨元喜,李金龙,王爱兵,等.北斗区域卫星导航系统基本导航定位性能初步评估[J].中国科学:地球科学,2014,44(1):72-81.
[3]李志才,张鹏,郑福,等.基于北斗导航系统的我国地基增强格网模型研究[J].地理信息世界, 2017,24(2):68-72.
[4]刘文建,邹璇.广东省北斗地基增强系统的建立与性能分析[J].地理空间信息, 2017,15(7):14-16.
[5]朱大勇,张卫东.北斗地基增强下的天津市三维测绘基准体系检测和评估[J].测绘通报, 2016(10):61-64.
[6]徐政宏,杨柏林.新疆北斗地基增强示范系统设计与实现[J].测绘技术装备, 2017(19):46-50.
[7]李成钢,张晋升.中海达北斗地基增强系统概述及其应用[J].测绘通报, 2017(3):155-156.
[8]黄永帅,史俊波,欧阳晨皓,等.千寻北斗地基增强网络下的实时观测数据解码及定位性能分析[J].测绘通报,2017(9):11-14.
[9]刘艳国,秘金钟,李得海,等. BDS基线解算不同时段精度差异分析[J].测绘通报, 2016(6):1-5.