EO·Atlas
STRATOS (Spire GNSS radio occultation receiver)
Compiled from public sources on 2026-06-14. Not independently verified by Spire Global.
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Spire in-house GNSS receiver payload carried on LEMUR small satellites for GNSS radio occultation, precise orbit determination, and related RF Earth observation products. NASA CSDA and WMO OSCAR identify STRATOS as the payload collecting GNSS signals used for atmospheric, ionospheric, and space-weather data products.
STRATOS is Spire Global's in-house software-defined GNSS receiver payload flown on LEMUR small satellites for GNSS radio occultation, precise orbit determination, and related RF Earth observation products [1][2]. It collects GNSS L-band signals for atmospheric, ionospheric, and space-weather data products [1][3]. The payload uses L1 and L2 RHCP receive antennas and supports multi-frequency L1, L2, and L5 multi-constellation tracking [1][3]. Representative GPS L5, L2, and L1 center frequencies for those tracked GNSS bands are 1.17645, 1.2276, and 1.57542 GHz [1]. LEMUR is Spire's Low Earth Multi-Use Receiver satellite line, and STRATOS is the payload associated with the GNSS observations used in Spire weather, climate, and space-weather services [4][5][3].
Compositional position
- GNSS radio occultation
NASA CSDA and WMO OSCAR identify STRATOS as Spire LEMUR GNSS radio occultation payload; no EO-Atlas Spire host mission or fleet row exists for demonstrated_via_mission.
None on record.
- [1]NASA CSDA vendor page for Spireagency doc2026-06-14
- [2]WMO OSCAR instrument record for STRATOSagency doc2026-06-14
- [3]WMO OSCAR satellite programme record for Low Earth Multi-Use Receiveragency doc2026-06-14
- [4]Spire Advanced Earth Intelligenceoperator marketing2026-06-14
- [5]Spire Low Earth Multi-Use Receiver overviewoperator marketing2026-06-14