Radar system and method of digital beamforming
First Claim
1. A radar system comprising:
- a plurality of antenna elements comprising;
a first transmit antenna element;
a second transmit antenna element; and
a receiving portion of antenna elements, such that said receiving antenna elements form a plurality of subarrays that represent real and synthetic receive antenna elements;
a transceiving device comprising a switching matrix, wherein said transceiving device is in communication with said transmitting portion of antenna elements and said receiving portion of antenna elements that receives at least a portion of said plurality of signals transmitted by said transmitting portion of antenna elements, and said switching matrix time-multiplexes said transmitting and receiving portion of antenna elements; and
at least said first and second switching transmit antenna elements configured and time-multiplexed with respect to said receiving portion of said antenna elements, such that a first signal transmitted by said first switching transmit antenna element is received by at least one said real antenna element and a second signal transmitted by said second switching transmit antenna element is received by at least one said real antenna element, and wherein said received signals are combined so that said signal received from said first switching transmit antenna element represents a signal received by said real receive antenna element and said signal received from said second switching transmit antenna element represents a signal received by said synthetic receive antenna element, wherein a receive aperture of said receiving portion of antenna elements is increased.
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0 Petitions
Accused Products
Abstract
A radar system and method is provided, in which the radar system includes a first transmitting portion of antenna elements, a second transmitting portion of antenna elements, and a receiving portion of antenna elements, such that the receiving antenna elements form a plurality of subarrays that represent real and synthetic antenna elements. The radar system further includes a transceiving device having a switching matrix. At least first and second switching transmit antenna elements are configured and time-multiplexed, wherein a receive aperture of the receiving antenna elements is increased. A first signal transmitted is received by the real antenna elements and a second signal transmitted is received by the real antenna elements, and combined so that the signals received from the first switching transmit antenna element represents a signal received by the real receive antenna element, and the signal received from the second switching transmit antenna element represents a signal received by the synthetic receive antenna element.
77 Citations
20 Claims
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1. A radar system comprising:
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a plurality of antenna elements comprising; a first transmit antenna element; a second transmit antenna element; and a receiving portion of antenna elements, such that said receiving antenna elements form a plurality of subarrays that represent real and synthetic receive antenna elements; a transceiving device comprising a switching matrix, wherein said transceiving device is in communication with said transmitting portion of antenna elements and said receiving portion of antenna elements that receives at least a portion of said plurality of signals transmitted by said transmitting portion of antenna elements, and said switching matrix time-multiplexes said transmitting and receiving portion of antenna elements; and at least said first and second switching transmit antenna elements configured and time-multiplexed with respect to said receiving portion of said antenna elements, such that a first signal transmitted by said first switching transmit antenna element is received by at least one said real antenna element and a second signal transmitted by said second switching transmit antenna element is received by at least one said real antenna element, and wherein said received signals are combined so that said signal received from said first switching transmit antenna element represents a signal received by said real receive antenna element and said signal received from said second switching transmit antenna element represents a signal received by said synthetic receive antenna element, wherein a receive aperture of said receiving portion of antenna elements is increased. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of electronically scanning a radar signal, said method comprising the steps of:
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transmitting a plurality of signals by a plurality of switching transmit antenna elements, such that a first switching transmit antenna element of said plurality of switching transmit antenna elements transmits a first signal; switching between said plurality of switching transmit antenna elements, such that a second switching transmit antenna element of said plurality of switching transmit antenna elements transmits a second signal; receiving at least a portion of said transmitted plurality of signals by a transceiving device comprising a plurality of receiving antenna elements; time-multiplexing said received signals, such that said first transmitted signal is received by at least one real antenna element of said plurality of receiving antenna elements and said second transmitted signal is received by at least one real antenna element of said plurality of receiving antenna elements, and combining said received signals, such that the signal received from said first switching transmit antenna element represents a signal received by said real receive antenna element, and the signal received from said second switching transmit antenna element represents a signal received by said synthetic receive antenna element, wherein a receiving aperture of said plurality of receiving antenna elements is increased. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification