Seems to me that a lot of complex mathematics are required to determine the sensors whereabouts in relation to the returned radar signal. There's RRPM, pitch, flap, lead-lad, flex, twist, flutter, and probably more that needs calculating.
Although it seems like a good idea on paper, with sensor resolution continually increasing for any given size, then there may not be a requirement for locating a sensitive bit of equipment in such a hostile environment.