Swarm-B L1B data gaps on 22 April 2026

05 May 2026

Due to a GPSR anomaly occurred onboard Swarm Bravo on 22 April 2026, data gaps have been observed in Swarm Bravo L1B products.

More specifically, the GPSR onboard Swarm Bravo was rebooted on 22 April 2026 at 22:18:32 UTC, resulting in a loss of GPS synchronization. GPS restart and re-synchronization were completed 19 minutes and 21 seconds later.

This caused a gap in VFM data on 22 April 2026 between 22:18:33 and 22:37:19, and a gap in ASM data from 22 April 2026 at 22:18:33 to 2026-04-23 at 08:14:32.

The issue also caused an EFI switch-off, which was recovered the following day, resulting in a data gap from 22 April 2026 at 22:18:31 to 23 April 2026 at 13:03:29.

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