摘要
基于欧洲静地轨道卫星导航重叠服务(european geostationary navigation overlay service,EGNOS)中用户差分距离误差(user difference range error,UDRE)和格网电离层垂直误差(grid ionospheric vertical error,GIVE)算法,分析了UDRE与卫星可见的距离修正和完好性监测站(ranging and integrity monitoring sta-tions,RIMS)个数之间的关系,以及GIVE与电离层格网点(ionospheric grid point,IGP)可见的电离层穿透点(ionospheric pierce point,IPP)个数之间的关系。通过对2012年EGNOS升级后为期一个月的实测数据的统计分析得出结论:在欧洲民航理事会(european civil aviation conference,ECAC)区域,卫星可见的RIMS个数越多,其对应的UDRE标记值(UDRE indicator,UDREI)越小,当可见RIMS个数达到17及以上时,UDREI值为6;格网点可见的IPP越多,其对应的GIVE标记值(GIVE indicator,GIVEI)越小,当可见IPP个数达到10及以上时,GIVEI值为8。
Based on the algorithm of the user difference range error（UDRE） of european geostationary navigation overlay service（EGNOS）, for each satellite, the relationship between the UDRE and the number of visible ranging and in- tegrity monitoring stations（RIMS）is analyzed. Also, for each ionospheric grid point（IGP）, based on the algo- rithm of grid ionospheric vertical error （GIVE）, the relationship between the GIVE and the number of visible ionospheric pierce point （IPP）is analyzed. Then, the data after EGNOS system updated in 2012 is processed, and some conclusions are obtained. In European civil aviation conference（ECAC）, the more the vis- ible RIMS is, the less the UDRE indicator（UDREI）, and when the visible RIMS is 17 or more, the UDREI is 6. The more the visible IPP is, the less the GIVE indicator（GIVEI）, when the visible IPP is 10 or more, the GIVEI is 8.
出处
《中国民航大学学报》
CAS
2013年第1期13-17,共5页
Journal of Civil Aviation University of China
基金
国家重点基础研究发展计划项目(2011CB707004)
国家科技支撑计划项目(2011BAH24B02)
国家自然科学基金项目(61079016)
