A study of ionospheric effects on next-generation two-way satellite time and frequency transfer

The next-generation two-way satellite time and frequency transfer (TWSTFT) is to compare clock difference at the sub-nanosecond level. However, many uncertainties, including ionospheric effects, still have to be much well studied for farther reduction. Now, there is a next-generation TWSTFT technique using dual pseudo-random noise (DPN) codes; it has high precision for clock comparison and can also provide opportunities to investigate the aforementioned uncertainties. This work investigated the influence of ionospheric uncertainties of both total electron content and post-sunset electric field prereversal enhancement on DPN-based TWSTFT.