摘要
精密进近着陆是整个航空飞行中的关键阶段,地基增强系统(GBAS)能够为航空导航提供实时和可靠的高精度定位服务。为了提高GBAS Ⅲ类(CAT Ⅲ)精密进近导航性能,建立了GBAS精密进近仿真模型,设计了GBAS载波相位平滑伪距以及差分修正算法,评估了双频全球导航卫星系统(GNSS)和GBAS算法在精密进近过程中的精度。仿真结果表明,与双频GNSS算法相比,GBAS算法可有效降低定位误差,满足CAT Ⅲ精密进近的精度要求。
The precision approach landing is a key stage in the whole aviation flight,the ground-based augmentation system(GBAS)can provide real-time and high-precision positioning service for aviation navigation. In order to improve the navigation performance of class Ⅲ(CAT Ⅲ)precision approach of GBAS,the simulation model of GBAS precision approach is established,the algorithms of GBAS carrier phase smoothing pseudo-range and difference correction are designed,the precision of precision approach of the dual frequency global navigation satellite system(GNSS)and GBAS algorithms in precision approach are evaluated. The simulation results show that the GBAS algorithm can effectively reduce the positioning error compared with the dual frequency GNSS algorithm,and can meet the accuracy requirements of CAT Ⅲ precision approach.
作者
马莹
李贺
刘海颖
MA Ying;LI He;LIU Haiying(School of Astronautics,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;State Key Laboratory of Air Traffic Management System and Technology,Nanjing 210007,China)
出处
《指挥信息系统与技术》
2020年第5期30-34,39,共6页
Command Information System and Technology
基金
航空科学基金(201908052002)
空中交通管理系统与技术国家重点实验室开放基金(SKLATM201903)资助项目。
关键词
全球定位系统
双频接收机
载波相位平滑伪距
精密进近
地基增强系统
global positioning system
dual frequency receiver
carrier phase smoothing pseudo range
precision approach
ground-based augmentation system(GBAS)
