Its called controlled reception pattern antenna (CRPAs), which unfortunately is an ITAR restricted thing because of insane paperwork required, so no one wants t

Its called controlled reception pattern antenna (CRPAs), which unfortunately is an ITAR restricted thing because of insane paperwork required, so no one wants to build it for civilian receivers. Which is stupid because beamforming (or null-steering) algorithms are not that difficult to implement, and so we already have Chinese and Iranian receivers with CRPAs. So PNT National Advisory Board is trying to convince US government to stop putting CRPAs under ITAR: https://www.gps.gov/governance/advisory/meetings/2023-05/murphy.pdf https://www.gps.gov/governance/advisory/meetings/2023-05/mur...