METHOD AND SYSTEM FOR MILLIMETER-WAVE IMAGE RECONSTRUCTION
First Claim
Patent Images
1. A method for reconstructing an image of an object, comprising the steps of:
- illuminating the object by transmitting millimeter-wave and/or micrometer-wave radiation from an array of transmitting antennas;
detecting signals of radiation reflected by the object with an array of receiving antennas and representing the detected signals by complex-numbered measurement data;
performing coherent processing of the measurement data including complex number computations for image reconstruction;
establishing Tx subgroups of transmitting antennas for which coherent processing is performed to achieve coherent, subimages; and
calculating magnitude values each indicative of a magnitude of a complex number to obtain a magnitude subimage for each of the coherent subimages and generating the object, image by adding the magnitude subimages.
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Abstract
The invention relates to a technique for millimeter-wave active image reconstruction. According to a method aspect, Tx subgroups of transmitting antennas of an antenna array are established. Coherent processing of measurement data is performed for each Tx subgroup and coherent subimages are achieved. Magnitudes of complex numbers are calculated to obtain a magnitude subimage for each of the coherent subimages and an object image is generated by adding the magnitude subimages.
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Citations
15 Claims
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1. A method for reconstructing an image of an object, comprising the steps of:
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illuminating the object by transmitting millimeter-wave and/or micrometer-wave radiation from an array of transmitting antennas; detecting signals of radiation reflected by the object with an array of receiving antennas and representing the detected signals by complex-numbered measurement data; performing coherent processing of the measurement data including complex number computations for image reconstruction; establishing Tx subgroups of transmitting antennas for which coherent processing is performed to achieve coherent, subimages; and calculating magnitude values each indicative of a magnitude of a complex number to obtain a magnitude subimage for each of the coherent subimages and generating the object, image by adding the magnitude subimages. - View Dependent Claims (2, 3, 4)
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5. A system for reconstructing an image of an object, comprising
an array of transmitting antennas adapted to illuminate the object by transmitting millimeter-wave and/or micrometer-wave radiation; -
an array of receiving antennas adapted to detect signals of radiation reflected by the object; at least one component adapted to represent the detected signals by complex-numbered measurement data; at least one component adapted to perform coherent processing of the measurement data including complex number computations for image reconstruction; at least one component adapted to establish Tx subgroups of transmitting antennas for which coherent processing Is performed to achieve coherent subimages; and at least one component adapted to calculate magnitude values each indicative of a magnitude, of a complex number to obtain a magnitude subimage for each of the coherent subimages and to generate the object image by adding the magnitude subimages. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A computer program comprising program code portions for performing the steps of:
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illuminating the object by transmitting millimeter-wave and/or micrometer-wave radiation from an array of transmitting antennas, detecting signals of radiation reflected by the object with an array of receiving antennas and representing the detected signals by complex-numbered measurement data; performing coherent processing of the measurement data including complex, number computations for image reconstruct ion; establishing Tx subgroups of transmitting antennas for which coherent processing is performed to achieve coherent subimages; and calculating magnitude values each indicative of a magnitude of a complex number to obtain a magnitude subimage for each of the coherent subimages and generating the object image by adding the magnitude subimages.
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Specification