Methods and systems for distributed radar imaging
AssigneeBoard of Trustees of Michigan State University
InventorJeffrey Nanzer
Life of this patent
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Abstract
An imaging system including a transmitter configured to transmit a signal in a direction of a scene of interest. The transmitted signal is spatially and temporally incoherent at a point where the transmitted signal reaches the scene of interest. The system includes a receiver set including at least a first receiver and a second receiver. The first receiver and the second receiver are configured to receive a reflected signal. The reflected signal is a reflection of the transmitted signal from the scene of interest. The system further includes an active incoherent millimeter-wave image processor configured to obtain the reflected signal and reconstruct a scene based on the reflected signal. The system also includes a display device configured to display the scene.
Claims20
An imaging system comprising:
- a plurality of transmitters mounted spaced-apart on a structure configured to transmit random or decorrelated signals in a direction of a scene of interest, wherein the transmitted signals are spatially and temporally incoherent where the transmitted signals reach the scene of interest;
- a receiver set including at least a first receiver and a second receiver, the first receiver and the second receiver being configured to receive a reflected signal, wherein the reflected signal is a reflection of the transmitted signals from the scene of interest, and wherein the first receiver and the second receiver are phase locked to a same reference signal;
- an active incoherent millimeter-wave image processor configured to obtain the reflected signal and reconstruct the scene based on the reflected signal;
- and
- a display device configured to display the scene.
An imaging system comprising:
- (a) a plurality of modules, wherein each module of the plurality of modules includes:
- a plurality of spaced-apart transmitters spaced apart on a structure configured to transmit random or decorrelated signals in a direction of a scene of interest, wherein the transmitted signals are spatially and temporally incoherent where the transmitted signals reach the scene of interest;
- and
- a receiver configured to receive a reflected signal, wherein the reflected signal is a reflection of the transmitted signal from the scene of interest, wherein the receiver is operating in a 30 GHZ to 300 GHz band, and wherein the receiver is phase locked to a same reference signal;
- (b) an active incoherent image processing module configured to obtain the reflected signal and generate a reconstructed scene based on the reflected signal;
- and
- (c) a display module configured to display the reconstructed scene.
An active incoherent millimeter-wave imaging method comprising:
- transmitting, by a plurality of transmitters mounted spaced-apart on a structure, random or decorrelated signals in a direction of a scene of interest, wherein the transmitted signals are spatially and temporally incoherent where the transmitted signals reach the scene of interest;
- receiving, by a plurality of receivers, a reflected signal, wherein the scene of interest reflects the transmitted signal as the reflected signal, and wherein each receiver of the plurality of receivers forms a set with each at least one other receiver of the plurality of receivers and each receiver set is configured to receive the reflected signal at a respective spatial frequency, and wherein the plurality of receivers are phase locked to a same reference signal;
- constructing a scene based on the reflected signal using spatial frequency sampling;
- and
- transmitting the scene to a display screen.
Dependencies are inferred from the claim text.