Microwave three-dimensional imaging method based on rotary antenna array

Abstract

The invention discloses a microwave three-dimensional imaging method based on a rotary antenna array, and relates to a microwave imaging technology. The method comprises the following steps of: generating an electromagnetic signal by a signal transmitting module; driving an antenna array module which is distributed in a straight line form or a curved line form to rate by a mechanical scanning module, meanwhile, controlling the antenna array module by a switch array module to transmit an electromagnetic signal at the same time, and receiving a signal which is reflected back from an observation target by a back wave receiving module; converting a reflecting signal into a digital signal by an analogue-digital conversion module; and using the digital signal as back wave data acquired by an array element position of the corresponding antenna array; imaging the back wave data by a data processing module to acquire a three-dimensional complex image of the observation target; and displaying the three-dimensional complex image of the observation target by a display module. The imaging method disclosed by the invention is used for application fields of human body surface microwave image acquisition and safe detection, three-dimensional data acquisition of a human body and action based on actual circumstances, nondestructive testing, radar target imaging diagnosis and the like.

Description

technical field [0001] The invention relates to the technical field of microwave imaging, in particular to a microwave three-dimensional imaging method based on a rotating antenna array, which acquires a three-dimensional microwave image of an observation target through the rotating antenna array. Background technique [0002] The microwave 3D imaging method based on the rotating antenna array can realize the 3D resolution imaging of the close-range observation target, obtain the microwave 3D image of the observation target, and then obtain the 3D microwave scattering characteristics, surface information and shape data of the observation target. This method can not only be used to obtain human surface information and three-dimensional shape data, but also can be used for radar target diagnosis to obtain target's three-dimensional space scattering characteristic distribution information. Compared with visible light, infrared and X-ray technologies, microwave has important adv...

AI Technical Summary

Problems solved by technology

[0012] ●The accuracy of the transmitted signal frequency is limited, the signal form is single, and the data acquisition efficiency is not high;

[0013] ●Imaging processing is single, and cannot process three-dimensional imaging data of non-linear or non-circular motion;

[0014] ●Unable to process the 3D imaging data acquired by the nonlinear antenna array moving along the circle

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