
Hundreds of future satellties under the National Defense Space Architecture (NDSA) may carry GPS-type payloads to complement, improve, and back-up GPS satellites, per the Department of the Air Force Space Development Agency (SDA). SDA is "interested in proliferating a low-cost L-band Position, Navigation and Timing (PNT) service as a payload on the SDA Tranche 2 Transport Layer," per a Nov. 3 Request for Information (RFI). "The PNT payload would include an on-orbit reprogrammable PNT signal generator, mid-size High Powered Amplifier…