This is essentially Hawkeye360's business model and to a lesser extent Aurora Insight. Both are satellite based analytics of RF signals. Hawkeye360 specifically

This is essentially Hawkeye360's business model and to a lesser extent Aurora Insight. Both are satellite based analytics of RF signals. Hawkeye360 specifically lists Maritime Domain Awareness as one of their focuses: https://www.he360.com/solutions/maritime-domain-awareness/ https://www.he360.com/solutions/maritime-domain-awareness/