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Synthetic Aperture Radar is widely used in civil and military fields, and there are many efficient digital imaging algorithms in synthetic aperture radar imaging field. While in practice, the phase error in the echo signal will lead to the degradation of the imaging quality. In addition, with the development of high-resolution synthetic aperture radar, the traditional motion compensation is not enough to meet the imaging requirements. Based on the existing research results at home and abroad, this paper proposes a fine phase error compensation technology of synthetic aperture radar adaptive optical imaging system. In this paper, the application of deformable mirror and wavefront sensor in synthetic aperture radar optical imaging system is studied. The wavefront sensor detects the distortion generated in the radar echo data and sends the distortion signal to the control computer. The control computer calculates the conjugate signal according to the distorted wavefront phase and sends it to the deformable mirror, which conducts distortion correction according to the signal sent by the control computer. Furthermore, the deformable mirror adjusts the surface shape in real time through the wavefront phase feedback of the wavefront sensor to reduce the phase error, which is of great significance for improving the imaging quality and improving the adaptive ability of the imaging system.
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