Satellite-borne SAR multi-target imaging parameter design method

• Main Authors: WANG WEI, QIU JINGSONG, LYU JIYU, DENG YUNKAI
• Format: Patent
• Language: Chinese; English
• Published: 09.05.2023
• 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 discloses a satellite-borne SAR (Synthetic Aperture Radar) multi-target imaging parameter design method. According to the method, high-resolution and high-timeliness imaging is used as a design target, a sliding bunching mode is used as a basic imaging mode, the high-resolution imaging requirement is met, and the observation timeliness is improved by utilizing the target screening principle that strabismus imaging is combined with high-priority targets to be imaged firstly, and targets with the same priority are imaged from near to far in the azimuth direction and then from near to far in the distance direction. According to satellite accurate orbit forecast data and target area information, in combination with a spaceborne SAR squint sliding bunching mode imaging principle, positions of multiple imageable targets are rapidly determined, key time and squint angle parameters required by imaging of each target area are accurately acquired, wave beam pointing is enabled to accurately point to the t