A good explanation of DBS radar...
https://www.radartutorial.eu/20.airborne/ab05.en.html#:~:text=Doppler%20Beam%20Sharpening%20is%20a,by%20the%20real%20beam%20alone.
Man, I love EM waves.
(particle, not particle, vacuum, not vacuum, stay at home, don't stay at home, go to work, don't go to work, ooo bake-off)