基于民航校验飞机的星基增强服务性能评估CSCD

为了进一步拓展全球卫星导航系统(GNSS)在民用航空等高生命安全领域的应用,世界各国争相发展星基增强系统(SBAS),美欧等SBAS已正式向民用航空领域提供了决断高度200英尺(约60.96m)的垂直导航信标性能(LPV-200)服务。我国的BDSBAS也已经完成系统建设,将向中国及周边区域提供满足国际民航组织(ICAO)一类垂直引导进近(APV-I)指标要求的单频增强服务。重点针对单频增强服务性能评估开展研究工作,首先从定位精度、完好性、可用性和连续性四个方面对星基增强服务评估方法进行了论述;再通过多次航空飞行试验对BDSBAS单频增强服务性能进行了验证,结果表明,航空飞行试验期间可满足APV-I设计指标要求;最后对BDSBAS单频增强服务在全国301个中大型机场的可用性进行了分析,非精密进近(NPA)可用性、APV-I可用性、LPV-200可用性在全国机场的覆盖率分别达到了97%、89.7%和83.1%。

Service Performance Evaluation of Satellite-Based Augmentation System Based on Civil Aviation Calibration Aircraft

To expand the application of GNSS in civil aviation and other high life safety fields, many countries are competing to develop SBAS. SBAS in the United States and Europe has officially provided LPV-200 service to the civil aviation users.BDSBAS has completed construction and will provide single-frequency augmentation service to China and its surrounding area, which will meet the requirements of ICAO APV-I. This paper focuses on the research of single-frequency augmentation service. Firstly, the evaluation method of SBAS service is discussed in the four aspects of positioning accuracy, integrity, availability and continuity.Then, the performance of BDSBAS single-frequency augmentation service is verified by several aviation flight tests, the result of which can meet the requirements of APV-I. Finally, the availability of BDSBAS in 301 airports of China is analyzed, and the coverage of NPA, APV-I and LPV-200 in these airports reaches 97%, 89.7% and 83.1%, respectively.