I was just thinking the other day about how they triangulate on radio frequencies. Imagine an illegal fm broadcast they are trying to find. From thought (not necessarily right), they would have 3 vehicles with receivers that would form a triangle and depending on angles and the time it takes for the signal to reach each vehicle. Using some simultaneous equations they can figure out where it is from. I'm not asking anyone to do the math here as I don't know where to start. Is there any website out there or anything that anyone could lead me to. Thanks.