GAGAN系统在北京地区定位性能测试与评估  

Evaluation of GAGAN System Positioning Performance in Beijing Area

作　　者：毛琪[1,2] 麻智超[1,2] 卢满宏[1,2] 王松[1,2] Mao Qi;Ma Zhichao;Lu Manhong;Wang Song(GNSS System Engineering Center, China Academy of Aerospace Electronics Technology, Beijing 100094, China;Test and Assessment Research Center, China Satellite Navigation Office, Beijing 100094, China)

机构地区：[1]中国航天电子技术研究院卫星导航系统工程中心,北京100094 [2]中国卫星导航系统管理办公室测试评估研究中心,北京100094

出　　处：《遥测遥控》2017年第4期53-57,共5页Journal of Telemetry,Tracking and Command

摘　　要：印度GPS辅助型静地轨道增强导航系统(GAGAN)是印度政府支持建设的GPS星基增强系统,主要服务于航空飞行应用,可以为印度及周边地区用户提供导航定位增强服务。介绍GAGAN系统的工作原理及服务范围,并在中国北京地区进行了实测分析,对GAGAN系统可用性、连续性和定位精度进行了评估,比较分析了GSAT-8和GSAT-10两颗卫星的服务性能。实测分析表明,在北京地区,全天24小时可以接收GAGAN系统的增强信号,水平方向定位精度优于5.9m(95%),且GSAT-8和GSAT-10卫星的增强服务性能基本一致。The Indian GPS Aided Geo Augmented Navigation(GAGAN)is a Satellite-Based Augmentation System(SBAS)supported by Indian government,which mainly serves for the Indian Flight Information Region(FIR).It can provide navigation and positioning enhanced service for users in or surrounding Indian areas.This paper introduces the operating principle and service areas of GAGAN system,evaluates the availability,continuity and static positioning accuracy of the system with real measured data and comparatively analyzes the GSAT-8and GSAT-10satellites service performances.The results show that,the GAGAN system augmentation signal can be received during24hours a day in Beijing area,the positioning accuracy is better than5.9meters in the horizontal with95%confidence level and GSAT-8/GSAT-10satellites have the nearly same service performances.

关 键 词：卫星导航 星基增强系统 定位精度 性能评估 

分 类 号：TN967.1[电子电信—信号与信息处理]