| 伪卫星辅助下的北斗GBAS完好性增强技术研究 |
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| 引用本文： | 于耕,张斌浩,禄韶勇,赵龙,任武君.伪卫星辅助下的北斗GBAS完好性增强技术研究[J].测绘通报,2017(9). |
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| 作者姓名： | 于耕 张斌浩 禄韶勇 赵龙 任武君 |
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| 作者单位： | 1. 沈阳航空航天大学民用航空学院,辽宁沈阳,110136;2. 沈阳航空航天大学电子信息工程学院,辽宁沈阳,110136;3. 民航西北地区空中交通管理局,陕西西安,712035 |
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| 基金项目： | 国家自然科学基金，中航工业产学研协同创新专项，中国航天科技集团公司卫星应用科研创新基金 |
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| 摘 要： | 根据机场实施精密导航技术(RNP)的要求,国际民航组织(ICAO)提出地基增强系统(GBAS),GBAS必将成为未来发展的必然趋势。但是在复杂的机场环境下,卫星信号易受外界影响和干扰,连续性不足,进而影响GBAS系统完好性性能的实施。因此,本文提出了伪卫星与北斗卫星联合定位增强GBAS的方法,并从加入伪卫星后的精度因子(DOP)、多参考一致性检测(MRCC)、完好性等方面进行了对比仿真分析。仿真结果表明,增加伪卫星后的系统精度因子得到了明显改善(PDOP小于3),同时提高了完好性性能,能够为复杂环境下的机场提供GBAS CATⅡ类及以上等级的精密进近服务。
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| 关 键 词： | 伪卫星 地基增强系统 精度因子 多参考一致性检测 完好性 |
Research on Beidou GBAS Integrity Enhancement Technology Based on Pseudo Satellite |
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| YU Geng,ZHANG Binhao,LU Shaoyong,ZHAO Long,REN Wujun.Research on Beidou GBAS Integrity Enhancement Technology Based on Pseudo Satellite[J].Bulletin of Surveying and Mapping,2017(9). |
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| Authors: | YU Geng ZHANG Binhao LU Shaoyong ZHAO Long REN Wujun |
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| Abstract: | According to the requirements of precision navigation technology ( RNP ) , the International Civil Aviation Organization ( ICAO) proposed the GBAS, which will become the inevitable trend of future development.But in the complex environment of the airport, the satellite signal is susceptible to outside influence and interference, lack of continuity, thereby affecting the implementation of GBAS system integrity performance.Therefore, the method of combining pseudo satellite and BeiDou satellite to enhance GBAS is proposed.The simulation results are compared with the precision factor (DOP), multiple reference consistency detection (MRCC) and integrity of the pseudo satellite.The simulation results show that the precision of the system is improved obviously after the increase of the pseudo satellite ( PDOP less than 3) ,at the same time the new method improves the integrity of the performance,and can provide CATⅡclass and above grade precision access services of GBAS in the airport of sophisticated environment. |
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| Keywords: | pseudo satellite GBAS DOP MRCC integrity |
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