Maybe it's possible to detect radio echoes off the rocket exhaust trail (passively) like it is possible to do with meteors [0][1] and roughly tell where the sec

Maybe it's possible to detect radio echoes off the rocket exhaust trail (passively) like it is possible to do with meteors [0][1] and roughly tell where the second stage is (just for the sake of doing it this way). [0] https://www.electronics-notes.com/articles/antennas-propagation/meteor-scatter-burst-communications/meteors-trails-radio-signals.php https://www.electronics-notes.com/articles/antennas-propagat... [1] https://en.wikipedia.org/wiki/Meteor_burst_communications https://en.wikipedia.org/wiki/Meteor_burst_communications