INTERFERENCE TYPE HIGH-RESOLUTION RADAR EQUIPMENT AND TOPOGRAPHC HEIGHT MEASURING METHOD USING IT

摘要

PROBLEM TO BE SOLVED: To constitute synthetic aperture radar equipment mounted on an airplane so that the equipment can obtain two kinds of pictures with one antenna and cannot be affected by the rolling angle of the airplane at the time of measuring topographical height with the equipment. ;SOLUTION: By respectively using the point P₁ at time t₁ and point P₂ at time t₂ as first and second observation points and the line between the points P₁ and P₂ as a base line B, a beam from an antenna is radiated upon a point Q at the diagonal rear of an airplane and two kinds of pictures from the observation points are found. Based on the pictures, the difference between the distance rQ from the topographical point Q to be measured to the point P₁ and the distance r₂Q. from the point Q to the point P₂ is found and the height of the point Q is found from the base line B.;COPYRIGHT: (C)1997,JPO