Arc-shaped synthetic aperture radar side lobe suppression method

• Main Authors: DANG MIAO, TAN WEIXIAN, HONG WEN, HUANG PINGPING, QI YAOLONG, XU WEI
• Format: Patent
• Language: Chinese; English
• Published: 09.08.2022
• 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 embodiment of the invention provides an arc-shaped synthetic aperture radar side lobe suppression method. The method comprises the following steps: acquiring an echo signal of an arc-shaped synthetic aperture radar; performing imaging processing on the echo signal by adopting a wavenumber domain algorithm to obtain a point target impulse response; the imaging result with the continuous point targets is analyzed, and the overlapping property of false signals generated by impulse responses of the two continuous point targets with the resolution smaller than the distance resolution is analyzed. According to the method, point target information is identified through gradual iteration, real point target signals with the resolution smaller than the distance resolution are separated according to the overlapping property of continuous point targets, and main lobes of the real target signals are extracted in the processing process, so that the influence of side lobe alignment and reduction on the reconstruction am