Missile bearing and altitude determination appts. for guidance system - uses on board radar equipment for measurements coupled with vector analysis for calculations

摘要

At least three instantaneous measurements of distance between the missile (1) and points on the ground (6) are made. The measurements take into account the pitch and yaw angles of the missile when calculating the altitude. Preferably, using vector substraction, a first or second position vector (24, 23), a first or second compound vector (31, 32) is generated to produce a normal vector (4) to calculate the direction of the missile; and a scaler product of vector (4) and one of the position vectors (21-24) provides altitude measurements. USE - Missile guidence systems.