I want this, but I do not have the experience with radio signals to build this myself without more guidance. Is there a DIY proof of concept I could lean on? How much more challenging will this be if you are in an area with overlapping FM signals from 2 transmitters sending the same signal?

▲

lormayna 5 hours ago | parent | next [-]

This is a very good point to start: https://www.rtl-sdr.com/tag/passive-radar/

If you have more than one receiver, the main issue is time sincronisation between the receivers.

Using the two transmitters will complicate things a lot

	▲	willis936 4 hours ago \| parent [-]
		For this kind of thing you need to step up to the kraken.

▲

quantum_state 5 hours ago | parent | prev [-]

Would suggest to take a look at Jackson’s book on classical electrodynamics to get some intuition.

▲

stagger87 an hour ago | parent [-]

That's very evil to recommend a graduate electrodynamics book to learn more about passive radar. I would suggest taking a look at Platos Republic to get some intuition on why that is. </s>

	▲	alwa 30 minutes ago \| parent [-]
		If you want to make an apple pie from scratch, first you must invent the universe…