Synthetic aperture laser imaging method of spatial light modulator and direct array detector

The invention provides a synthetic aperture laser imaging method of a spatial light modulator and a direct array detector. The method comprises the following steps: processing a laser echo signal obtained by irradiating a moving target by using a laser emission signal to obtain motion information corresponding to the moving target; a laser complex image is constructed by using a direct array detector according to a laser echo signal and a quadrature phase modulation laser local oscillator; constructing a linear phase of a spatial sampling domain, a second-order phase of the spatial sampling domain and a linear phase of an image domain corresponding to each frame of laser complex image according to the motion information and the target motion parameters; performing image registration processing and motion compensation processing on the laser complex image according to the linear phase and the second-order phase of the spatial sampling domain to obtain a laser complex image after motion compensation processing;