Radio frequency compatibility analysis for BDSBAS and GPS/WAAS  

作　　者：Cheng Liu Wei-Guang Gao Jun Lu Yi Zhou Shan-Shan Chen 

机构地区：[1]Beijing institute of Tracking and Telecommunication Technology,Beijing 100094,China [2]BeiDou Application Research Academy of Norinco Group,Beijing 100089,China [3]Space Star Technology,Beijing 100094,China

出　　处：《Research in Astronomy and Astrophysics》2021年第8期235-244,共10页天文和天体物理学研究（英文版）

基　　金：supported in part by the National Natural Science Foundation of China (Grant Nos.42074044 and 41974041);in part by “Young Talent Lifting Project” of China Association for Science and Technology (Grant No.2019QNRC001)。

摘　　要：Radio frequency signal compatibility is the basis of interoperability of the Satellite eBased Augmentation System(SBAS).SBAS should abide by relative international radio regulations of International Telecommunication Union(ITU) and meet the compatibility requirements of radio frequency signal between the Global Navigation Satellite System(GNSS)/SBAS,in order to avoid negative mutual interference.According to ITU Proposal and related reference and assumptions,the paper made simulation of signal receiving maximum power in the Bei Dou Satellite-Based Augmentation System(BDSBAS)global signal coverage.And then,interference of BDSBAS to Global Positioning System(GPS)/WAAS(Wide Area Augmentation System) on L1/L5 bands were calculated and analyzed,with equivalent carrierto-noise ratio as the evaluation parameter.The result shows that the carrier-to-noise ratio decrease of GPS/WAAS caused by BDSBAS B1 C and B2 a signals are extremely lower than inter-system interference of GPS/WAAS,and thus can be ignored in practical applications.Therefore,BDSBAS will not cause the service performance degradation of GPS and WAAS.

关 键 词：space vehicles methods:data analysis celestial mechanics 

分 类 号：V474[航空宇航科学与技术—飞行器设计]