基于GPS的GBAS机载接收机完好性分析

摘要

In allusion to the application requirement of GBAS, according to GBAS integrity arithmetic and LAAS criterion, this paper analysed the integrity of CAT II/CAT III precision approach integrity arithmetic and corrected pseudorange error mode of ground and aircraft. Finally, GBAS integrity based on GPS was emulated and analyzed. The GBAS integrity based on GPS doesn't satisfy requirement of CAT II/CAT III.%在卫星空间导航性能的研究中,针对陆基增强系统( Ground-Based Augmentation System , GBAS)的应用需求,结合GBAS卫星完好性的计算方法和局域增强系统( Local Area Augmentation System ,LAAS)相关标准,对基于GPS的GBAS的CAT II/CAT III类精密进近的完好性算法和影响完好性的地面和机载的伪距偏差模型进行了研究分析,最后对基于GPS的GBAS CAT II/CAT III精密进近的完好性进行了仿真和分析,仿真证明基于GPS的GBAS完好性不能完全满足CAT II/CAT III精密进近着陆完好性要求。仿真为GPS中的GBAS工程应用提供参考。