Apparatus and method for doppler-assisted mimo radar microwave imaging
AssigneeVayyar Imaging Ltd.
InventorsRaviv MELAMED, Naftali CHAYAT
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Abstract
A method and apparatus for enhanced microwave imaging of an object collects microwave responses for multiple combinations of transmit antennas, receive antennas, and object movement states. The responses are grouped into sets of responses corresponding to at least two object movement states. An image is reconstructed from the set of responses for each movement state, and a differential image representative of object movement is generated from the reconstructed image for each of the at least two object movement states. The differential image is overlaid on a reconstructed image to obtain an enhanced composite image of the object.
Claims23
A method for enhanced microwave imaging of an object, comprising:
- a) collecting microwave responses for multiple combinations of transmit antennas, receive antennas, and object movement states;
- b) grouping the responses into sets of responses corresponding to at least two object movement states;
- c) for each of said at least two object movement states, reconstructing an image from the set of responses collected for said movement state;
- d) generating a differential image representative of movement of the object from the reconstructed image for each of said at least two object movement states;
- and
- e) overlaying a reconstructed image for at least one of said object movement states with the differential image to obtain a composite image of the object.
Apparatus for enhanced microwave imaging of an object, comprising:
- a microwave antenna array directed towards the object;
- and
- a data processor converting collected signals from the antenna array into a set of responses characterizing the object in at least two object movement states, reconstructing an image of the object from the set of responses collected for said at least two object movement states, generating a differential image representative of movement of the object from the reconstructed image for each of said at least two object movement states, and overlaying a reconstructed image for at least one of said object movement states with the differential image to obtain a composite image of the object.
A Doppler assisted MIMO radar system for microwave imaging of an object, comprising:
- first means for collecting microwave responses for multiple combinations of transmit antennas, receive antennas, and object movement states;
- and
- second means for:
- grouping the responses into sets of responses corresponding to at least two object movement states;
- for each of said object movement states, reconstructing an image from the set of responses collected for said movement state;
- generating a differential image representative of movement of the object components from the reconstructed image for each of said at least two object movement states;
- and
- overlaying a reconstructed image for at least one of said object movement states with the differential image to obtain a composite image of the object.
Dependencies are inferred from the claim text.