Analysis on the Integrity Simulation of Dual-Frequency WAAS
With the continuous development of GNSS applications,in order to satisfy high precision,high integrity demands for different users,especially aviation users,many countries are striving to develop Satellite-Based Augmentation Systems(SBAS).To take full advantage of increasing satellite navigation systems,SBAS is gradually designed from single frequency to dual-frequency,which is an important research issue of Satellite Based Augmentation System Interoperability Working Group.Based on the characteristics of dual-frequency SBAS(DF SBAS)system,the connotation of DF SBAS integrity is summarized.Aimed at the problem that SBAS integrity parameters are relatively conservative,a dual-frequency SBAS integrity optimization algorithm is proposed to optimize the SBAS weight matrix.The SBAS Simulator software is used to validate the integrity availability of dual-frequency WAAS system in North America areas.The results show that the SBAS algorithm can effectively reduce the HPL and VPL values,and improve the system availability.
SBAS integrity dual-frequency WAAS
Xiaoyu Li Yi Qiao Teng Wang
Beijing Aerospace Flight Control Center Beijing,China
国际会议
重庆
英文
2078-2082
2017-03-25（万方平台首次上网日期，不代表论文的发表时间）