Rapid calculation method of arc synthetic aperture ground-based radar coordinate projection

• Main Authors: HUANG YI, DU NIANCHUN, SHEN XIANGQIAN, XIE XIANG
• Format: Patent
• Language: Chinese; English
• Published: 25.12.2020
• 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 provides a rapid calculation method of an arc synthetic aperture ground-based radar coordinate projection. The rapid calculation method comprises the following steps that a coordinate value (r, theta) sequence and terrain three-dimensional point cloud data of a radar irradiation scene under a polar coordinate system taking a radar as a center is obtained; projection polar coordinates(r, theta) of the terrain point cloud under the coordinate system is calculated; and a certain number of projection polar coordinate values of terrain point clouds are selected, and for the projection polar coordinate value of each terrain point cloud, if r-r is less than delta r and theta-theta is less than delta theta, the point cloud is considered to be the terrain point cloud covered by a measurement grid with a certain coordinate value (r, theta) of an irradiation scene under a radar polar coordinate system. According to the rapid calculation method of the arc synthetic aperture ground-based radar coordinate pro