GPS is often compared to triangulation, which is actually not entirely correct. More correct would be trilateration. Trilateration is based upon distances rather than the intersection of lines based on angles. Now, in a terrestrial survey as indicated in this image here, there would probably be a minimum of three control stations, and from them would emanate three intersecting distances, i.e., L1, L2, and L3.
The GPS L3 used by Nuclear Detonation (NUDET) Detection System Payload (NDS); signals nuclear detonations/high-energy infrared events. Used to enforce nuclear test ban treaties.
So if there is a need in this area, the L3 GPS jammer is your best choice. More and more countries are now using such jamming devices in combat to disrupt the enemy's ability to detect the environment.
GPS Jammers By Frequency
Full Band 22 Antennas 5G Desktop Mobile Phone Jammer