US 8,525,113 B2Granted

Portable radiometric imaging device and a corresponding imaging method

AssigneeMicrowave Characterization Center

InventorsMatthieu Werquin, Nicolas Thouvenin, Simon Vandenbrouck, Christophe Gaquiere, Frederic Bue-Erkmen, Nicolas Vellas

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Abstract

The invention relates to a portable radiometric imaging device and to a corresponding method, finding a particular application in detecting articles carried by passengers or contained in baggage, for example in airports and train stations. The device includes a plurality of receiver antennas for picking up electromagnetic radiation from a plurality of parts of a body or an article and converting them into a plurality of signals representative of said radiation, a plurality of receiver modules associated with the antennas for receiving the signals representative of the radiation and converting them into a plurality of electrical signals, and a digital processor unit for responding to the electrical signals to create one or more digital signals representative of the electromagnetic radiation for display on a display as an image of the body or article. A correlator module is provided for correlating the electrical signals in order to form a signal representative of the electromagnetic radiation from the intersection of the two parts of the body or article.

Claims11

Dependent claims

A portable radiometric imaging device comprising:

at least first and second receiver antennas adapted to pickup electromagnetic radiation from first and second parts of a body or an article and to convert them into first and second signals representative of said radiation;
at least first and second receiver modules associated with said first and second antennas and adapted to receive said first and second signals representative of said radiation and to convert them into first and second electrical signals;
and
a digital processor unit adapted to create, from said first and second electrical signals, at least one digital signal representative of said electromagnetic radiation to be displayed on a display as an image of said body or article;
wherein the first and the second receiver modules include a frequency reducer module, and wherein the device further comprises:
at least one deconvolution module adapted to deconvolute the first and second electrical signals at the output from the first and second receiver module;
a correlator module adapted to correlate said first and second deconvoluted electrical signals in order to form at least one signal representative of the electromagnetic radiation from the intersection of said first and second parts of said body or article.

4 more elements

A radiometric imaging method including:

a step of at least first and second receiver modules receiving and converting into first and second electrical signals first and second signals representative of radiation from first and second parts of a body or an article captured by first and second antennas;
and
a step of a digital processor unit creating from said first and second electrical signals at least one digital signal representative of said electromagnetic radiation to be displayed on a display as an image of said body or article;
wherein the receiving and conversion step comprises a step of reducing the frequency of said electrical signals, and wherein said method further comprises a deconvolution step of deconvolutinq said first and second electrical signals and then a step of correlating said first and second deconvoluted electrical signals in order to form at least one signal representative of the electromagnetic radiation from the intersection of said first and second parts of said body or article.

1 more element

Dependencies are inferred from the claim text.