Impact of non-nominal troposphere error on GBAS integrity

被引：0
|
作者：
Xin P. [1 ]
Wang Z. [1 ]
机构：
[1] School of Electronic and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing
来源：
Wang, Zhipeng (wangzhipeng@buaa.edu.cn) | 1882年 / Beijing University of Aeronautics and Astronautics (BUAA)卷 / 43期
关键词：
Ground-based augmentation system (GBAS); Hopfield model; Integrity; Non-nominal troposphere error; Vertical protection level (VPL);
D O I：
10.13700/j.bh.1001-5965.2016.0665
中图分类号：
学科分类号：
摘要：
In current ground-based augmentation system (GBAS), the average vertical protection level(VPL) increase caused by non-nominal troposphere error is 2.29 m, the accuracy of bounding is reduced and the integrity risk is increased. Faced with the above problems, a real-time method was proposed based on the modified Hopfield model. With real-time method, the non-nominal troposphere error was calculated according to the real-time weather changes, satellite elevation angle and the distance between aircraft and ground station. Given the high requirement of the real-time method for very high frequency data broadcast(VDB) transmission bandwidth, a fitting method was proposed, in which error is a function of distance and elevation angle. Simulations compute the VPL under the flight scenarios of single point, approach area and terminal area with the aim of evaluating the impact of non-nominal troposphere error on GBAS integrity. The results show that, with the real-time bounding method, VPL is averagely increased by 1.55 m and the accuracy of bounding is increased by 32.52%; with fitting method, VPL is averagely increased by 1.27 m, the accuracy of bounding is increased by 44.54%, the VDB transmission data is less, and the GBAS integrity risk is decreased. © 2017, Editorial Board of JBUAA. All right reserved.
引用
收藏
页码：1882 / 1890
页数：8
相关论文
共 17 条
  • [1] Li K., Gong G.F., Introduction of GPS ground based augmentation system and performance simulation, Electronics Optics & Control, 20, 8, pp. 89-94, (2013)
  • [2] Suparta W., Tropospheric modeling from GPS, Modeling of Tropospheric Delays Using ANFIS, pp. 19-52, (2016)
  • [3] Diggle D.W., An investigation into the use of satellite-based positioning systems for flight reference/autoland operations, dissertation, pp. 2-17, (1994)
  • [4] Van Graas F., Krishnan V., Suddapalli R., Et al., Conspiring biases in the LAAS, Proceedings of the Annual Meeting-Institute of Navigation, pp. 300-307, (2004)
  • [5] Huang J., Van Graas F., Comparison of tropospheric decorrelation errors in the presence of sever weather conditions in different areas and over different baseline lengths, Navigation, 54, 3, pp. 207-226, (2007)
  • [6] Huang J., Van Graas F., Cohenour C., Characterization of tropospheric spatial decorrelation errors over a 5-km baseline, Navigation, 55, 1, pp. 39-53, (2008)
  • [7] Van Graas F., Zhu Z., Tropospheric delay threats for the GBAS, Proceedings of the International Technical Meeting of the Institute of Navigation, pp. 959-964, (2011)
  • [8] Mateus P., Nico G., Tome R., Et al., Experimental study on the atmospheric delay based on GPS, SAR interferometry, and numerical weather model data, IEEE Transactions on Geoscience & Remote Sensing, 51, 1, pp. 6-11, (2013)
  • [9] Guilbert A., Non-nominal troposphere reassessment for meeting CAT II/III with MC/MF GBAS, Proceedings of the 28th International Technical Meeting of the Satellite Division of the Institute of Navigation, pp. 1526-1537, (2015)
  • [10] Minimum operational performance standards for GPS local area augmentation system airborne equipment: RTCA D0-253C-08, (2008)
12