Missile-borne radar imaging self-focusing method and device

• Main Authors: WANG YING, XIE YANG, PENG CHENGLIANG, LIU JISEN, LIU YINZHONG, FU JIANGZHANG
• Format: Patent
• Language: Chinese; English
• Published: 22.08.2023
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

The invention relates to a missile-borne radar imaging self-focusing method and device, belongs to the field of image processing, and solves the problem that the focusing effect is reduced by the dynamic characteristics of multiple targets in an offshore interference scene, and the method comprises the steps: carrying out the azimuth superposition of echo data, and obtaining one-dimensional range profile echo data; based on the amplitude and the coordinates of the one-dimensional range profile echo data, carrying out difference on the coordinates corresponding to each wave crest in the one-dimensional range profile echo data to obtain a difference result; determining a target area corresponding to the observation target according to the difference result; wherein the target area is used for indicating a distance direction coordinate set; based on the target area, determining whether the observation target is of a non-rigid body structure; and performing local self-focusing on the echo data corresponding to th