FIELD: aircraft navigation; avoidance of collision of flying vehicle with ground. SUBSTANCE: information on space attitude and velocity vector is received by input and spatial three- dimensional image is retained. Device has information processing unit which determines sector of view and calculates definite contour in this sector in function of intersection of this sector with ground relief for its indication. Said sector of view is determined by means of lines of trajectory obtained from velocity vector and auxiliary vectors calculated by shift of velocity vector in accordance with selected angular scanning law. EFFECT: enhanced reliability. 44 cl, 15 dwg
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