Self-adaptive spaceborne antenna side lobe suppression method and device based on non-reciprocal structure

• Main Authors: YANG TIANYUAN, LU PINGPING, WANG YU, CHEN YUESHENG, WANG XUEMEI
• Format: Patent
• Language: Chinese; English
• Published: 27.06.2023
• 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 provides a non-reciprocal structure-based adaptive spaceborne antenna side lobe suppression method and device, and the method comprises the steps: analyzing the working height of a spaceborne antenna and a fuzzy band corresponding to an antenna side lobe, and obtaining the corresponding relation of the antenna side lobe, a sub-satellite point and the fuzzy band; designing a spaceborne antenna covered by a non-reciprocal structure, wherein the non-reciprocal structure is used for suppressing a signal in a direction corresponding to a spaceborne SAR receiving antenna minor lobe; according to the suppression requirements of a spaceborne SAR system for different fuzzy bands in range ambiguity, a non-reciprocal structure is controlled through a self-adaptive controller, then suppression of electromagnetic waves received at different angles is achieved, and therefore the problem of fuzzy signals entering the system from a side lobe is solved. According to the invention, suppression of the antenna side