Terrain Mapping guidance is used primarily for mid-course navigation, in most applications it is used with GPS and inertial navigation backup to provide autonomous, high precision navigation. The system scans and follows familiar ground contours, compared to digital map stored inside the weapon’s mission computer, to guide itself to the target. This method is especially effective in feature abundant terrain, where natural and man made elements such as roads, buildings, waterways and vegetation can be used for orientation.

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