https://arstechnica.com/space/2024/10/spacex-catches-returni...
Surveying GPS can do that with WAAS and a bunch of integration time and extra receivers, but not in real time:
https://www.gps.gov/systems/gps/performance/accuracy
So that's why I think they need to have a high resolution, close range, 3d positioning method for the final seconds.
https://arstechnica.com/space/2024/10/spacex-catches-returni...
Surveying GPS can do that with WAAS and a bunch of integration time and extra receivers, but not in real time:
https://www.gps.gov/systems/gps/performance/accuracy
So that's why I think they need to have a high resolution, close range, 3d positioning method for the final seconds.