Imaging architecture with code-division multiplexing for large aperture arrays
First Claim
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1. A phased array system, comprising:
- an orthogonal signal generator that generates a plurality of signals C(i) that are orthogonal or near-orthogonal, meaning that a cross correlation between any two signals C(i) is lower than an autocorrelation;
a plurality of phased array antenna elements, each said antenna element providing a signal Sinp(i);
a multiplier to multiply each signal C(i) with the signal Sinp(i) of a corresponding one of the plurality of phased array antenna elements;
a combiner to combine all multiplied signals
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Abstract
A method and structure for a phased-array system. An orthogonal signal generator generates a plurality of signals C(i) that are orthogonal or near-orthogonal, meaning that a cross correlation between any two signals C(i) is lower than autocorrelation, and there is a plurality of phased-array antenna elements, each said antenna element providing a signal Sinp(i). A multiplier multiplies each signal C(i) with the signal Sinp(i) of a corresponding one of the plurality of phased array antenna elements.
11 Citations
14 Claims
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1. A phased array system, comprising:
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an orthogonal signal generator that generates a plurality of signals C(i) that are orthogonal or near-orthogonal, meaning that a cross correlation between any two signals C(i) is lower than an autocorrelation; a plurality of phased array antenna elements, each said antenna element providing a signal Sinp(i); a multiplier to multiply each signal C(i) with the signal Sinp(i) of a corresponding one of the plurality of phased array antenna elements; a combiner to combine all multiplied signals - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for imaging, said method comprising:
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generating a plurality of signals C(i) that are orthogonal or near-orthogonal, meaning that a cross correlation between any two signals C(i) is lower than an autocorrelation; receiving a passive signal incident on each antenna element in an antenna array; multiplying a signal of each antenna element by one of the signals C(i);
combining the multiplied signals of the antenna elements to provide a combined sequence - View Dependent Claims (8, 9, 10)
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11. A non-transitory, computer-readable storage medium tangibly embodying a program of machine-readable instructions executable by a digital processing apparatus to perform a method of imaging, said method comprising:
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generating a plurality of signals C(i) that are orthogonal or near-orthogonal, meaning that a cross correlation between any two signals C(i) is lower than an autocorrelation; receiving a passive signal incident on each antenna element in an antenna array; multiplying a signal of each antenna element by one of the signals C(i); combining the multiplied signals of the antenna elements to provide a combined sequence - View Dependent Claims (12, 13, 14)
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Specification