After the missile etc. has reached the required flight height, it is followed by an optical video sensor, such as a camera, fitted in the missile axis in the flight direction. It is mounted on a platform whose rated rotary velocity is computed according to a formula, related to an amplification factor, measured flexure shift and shift vectors. The rated flight height, imaging interval and flight velocity are also considered. Pref. the platform rated rotary velocity is directly computed from the viewing distance according to a second specified term.
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