🛰️ Satellite Ground Pass: Link Budget, Doppler Shift and Rain Fade from LEO to GEO

Watch one satellite pass over a ground dish and see the whole radio link: slant range, free-space loss, Doppler shift, gas and rain fade, system noise, Eb/N0 margin and the megabytes delivered. Switch between UHF and Ka band, LEO and GEO, and run an experiment on how rain cuts data per pass. Five independent checks compare closed forms with numerical runs.

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install