一种电离层活跃期的三频TECR周跳处理算法

针对电离层活跃期现有三频周跳处理方法难以正确探测与修复周跳和阈值设定不合理的问题,借鉴双频TECR算法,提出一种能够削弱电离层延迟影响的三频TECR算法。三频TECR组合与三频码相无几何无电离层组合均能有效削弱电离层延迟对周跳探测的影响,并能自适应地确定合理阈值。利用三频实测数据对算法进行验证的结果表明,该方法能够有效消除电离层延迟影响,实现电离层活跃期周跳的动态探测与修复。

A Triple-Frequency TECR Cycle-Slip Processing Algorithm under Ionospheric Active Conditions

Existing triple-frequency cycle-slip processing algorithms are usually not effective, and the threshold setting may be not reasonable for cycle-slip detection and repair under high ionospheric activity. To solve those problems, the triple-frequency total electron contents rate(TECR) method for whittling ionospheric delay is proposed based on the dual-frequency TECR method. Both the triple-frequency TECR method and triple-frequency code-phase geometry-free and ionospheric-free combination in this algorithm can whittle the influence of ionospheric delay effectively and determine reasonable threshold adaptively. Triple-frequency measured data are used to validate this algorithm, and experimental results showed that this algorithm can whittle ionospheric delay effectively and can realize the detection and repair of cycle-slip dynamically under ionospheric active conditions.