Precursor SPC Selects Spire Global To Provide GNSS Radio Occultation Profiles For Hypersonic Tracking

Published: 2026-04-20 10:20:45 ET SPIR

Published on 04/20/2026 at 10:20 am EDT

Spire Global, Inc. announced it has been selected by Precursor SPC, a provider of real-time space domain awareness and environmental intelligence, to provide GNSS radio occultation (RO) profiles in support of hypersonic tracking. Under the agreement, Precursor SPC will integrate Spire?s RO profiles into its AI/ML-driven ionospheric nowcasting system to enable assured attribution and continuous, real-time hypersonic tracking across all phases of flight. Precursor?s platform uses AI/ML fusion to combine GNSS, ionosondes, RO, and other data sources to generate continuous, real-time ionospheric nowcasts.

Spire?s RO profiles deliver precise measurements of atmospheric density and ionospheric conditions at a global scale. The Company has the capacity to produce up to 20,000 RO profiles per day, enabling high-frequency monitoring of the environmental variables that influence hypersonic trajectories and long-range communications. Recently, Spire and Precursor delivered a real-time ionospheric nowcast during the Artemis II mission?the first crewed flight to orbit the Moon in more than half a century?spanning both launch and re-entry.

Leveraging Spire?s RO profiles, Precursor monitored environmental conditions as they evolved in near real time, providing insight into electron density changes, RF degradation, and other dynamic factors that impact tracking and communications during the most critical phase of flight.