BDSK8广播电离层模型性能分析

Performance analysis of BDSK8 broadcast ionospheric model

对于双频接收机,用户可以采用消电离层组合进行电离层延迟改正,但对于单频导航定位用户而言,此方法并不适用。目前GPSK8模型已在全球覆盖,并且取得了较高的精度。现阶段BDSK8模型已经实现了区域服务,为了更全面地评估BDSK8广播电离层的性能,文章利用实测数据对BDSK8模型按区域和全球进行划分,从改正精度和改正率两方面进行分析。研究结果可为广播电离层监测评估以及单频导航定位等应用提供参考。

For the dual frequency receiver, the ionospheric delay correction can be performed by using the ionospheric component, but this method is not suitable for single frequency navigation and positioning users. At present, the GPSK8 model has been widely used in the world, and has achieved high accuracy. At this stage, the BDSK8 model has achieved regional services, in order to assess the BDSK8 radio ionospheric performance more comprehensive, this paper divided the BDSK8 model by regional and global using the measured data, the correction accuracy and correct rate of the two aspects are the analyzed. The research results can be used as reference for the evaluation of the ionosphere monitoring and the application of single frequency navigation and positioning.