Comments by "Titanium Rain" (@ChucksSEADnDEAD) on "Prop vs. Jet; The Venezuelan Example" video.

@jacobmccandles1767 This is not true. In fact early gens of heat seeking missiles did not measure distance at all, and as tech progressed missiles still had no direct measurement for distance and instead relied on the rate of closure to the target (heat signal increase) to help the algorithm find the time-to-impact. The first gens of heat seekers did indeed tail-chase which made them inefficient at using their energy. Modern heat seeking missiles have a high off boresight and thus they're able to actually fly ahead of the target to optimize closure rate.
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