Short millimeter wave alternating current radiation imaging method and device

A radiation imaging and millimeter wave technology, applied in the field of radiometer imaging, can solve the problems of image DC energy loss, low imaging sensitivity, etc., and achieve the effects of good integration and consistency, short integration time, and moderate spatial resolution
CN103576144AActive Publication Date: 2014-02-12NANJING UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
NANJING UNIV OF SCI & TECH
Publication Date
2014-02-12

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Abstract

The invention discloses a short millimeter wave alternating current radiation imaging method and device. The short millimeter wave alternating current radiation imaging method includes the steps of enabling an antenna to receive information, amplifying the signal radio frequency of the information, conducting signal detection, low-frequency signal amplification and gating, A / D sampling, voltage-gray level imaging, image geometric correction and image energy compensation, displaying a pseudo-color image, and the like. The short millimeter wave alternating current radiation imaging device comprises an antenna module, a radio frequency low-noise amplifier module, a detection module, a gating low-noise amplifier module, an A / D sampling module, a scanning control module, an alternating current imaging module, a geometric correction module, an energy compensation module and an image display module. The short millimeter wave alternating current radiation imaging method and device are simple in structure, low in use cost and good in use effect.
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Description

technical field

[0001] The invention belongs to the field of radiometer imaging, in particular to a short millimeter wave AC radiation imaging method and an imaging device. Background technique

[0002] Compared with the imaging detection of various existing active and passive systems, the main difficulty of millimeter wave and submillimeter wave passive imaging is that the energy of millimeter wave and submillimeter wave radiated by various objects in nature is too weak, usually only pico The watt level is even lower, and various interferences in nature and the noise of the receiver itself are much higher than the energy of the useful signal. Therefore, how to detect useful information from signals submerged by noise is a big challenge. Since the natural intrinsic radiation of natural objects cannot be changed, the fundamental method is to improve the sensitivity of the receiver, such as performing pre-low noise amplification on the signal as much as possible, minimizing t...

Claims

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