Multi-frequency-point reconfigurable electromagnetic surface rapid imaging method

The invention discloses a multi-frequency-point reconfigurable electromagnetic surface rapid imaging method. According to the method, high-resolution range focusing is realized by using the broadbandinformation of received signals; the on-off states of corresponding diodes of reconfigurable array elements are adjusted, so that the space phase modulation of electromagnetic waves is completed, andaccurate focusing and rapid scanning on a focusing plane are achieved. According to the electric scanning rapid imaging method of the broadband reconfigurable electromagnetic surface array, the real beam scanning imaging mode of the method is significantly different from an imaging mode based on a synthetic aperture technology. The imaging processing method has the advantages of simplicity, high range resolution, high azimuth resolution, easiness in arrangement and high environmental applicability. With the method adopted, complex operation in security check imaging based on the synthetic aperture technology in the pri