This does not sound right. I would genuinely like to see a source where they use time of flight, a range finding technique, to detect tanks at long range in day

This does not sound right. I would genuinely like to see a source where they use time of flight, a range finding technique, to detect tanks at long range in daylight when you could instead use active radar or passive thermal technology (focal plane array/starring array [0][1] , to detect a tank. (My experience is with infantry-level night vision and thermal scopes. I don't know anything in depth about how munitions detect tanks) [0] http://en.wikipedia.org/wiki/Staring_array http://en.wikipedia.org/wiki/Staring_array [1] http://en.wikipedia.org/wiki/Thermographic_camera http://en.wikipedia.org/wiki/Thermographic_camera