Simultaneous beamforming and multiple input-multiple output (mimo) schemes in radar system
AssigneeTexas Instruments Incorporated
InventorsDan WANG, Sandeep RAO, Adeel AHMAD
Life of this patent
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Abstract
A radar system includes a set of transmitters and a processor coupled to the set of transmitters, which includes first, second, third and fourth transmitters. In operation, the processor generates a first chirp of a set of chirps, in which outputs of the first and second transmitters are modulated by a first phase and outputs of the third and fourth transmitters are modulated by a second phase; and generate a second chirp of the set of chirps, in which outputs of the first and fourth transmitters are modulated by the first phase and outputs of the second and third transmitters are modulated by the second phase.
Claims19
A radar system comprising:
- a set of transmitters including a first transmitter, a second transmitter, a third transmitter, and a fourth transmitter;
- and
- a processor coupled to the set of transmitters, the processor configured to:
- generate a first chirp of a set of chirps, in which outputs of the first and second transmitters are modulated by a first phase and outputs of the third and fourth transmitters are modulated by a second phase;
- and
- generate a second chirp of the set of chirps, in which outputs of the first and fourth transmitters are modulated by the first phase and outputs of the second and third transmitters are modulated by the second phase.
A radar system comprising:
- a set of transmitters including multiple subsets of transmitters, at least two subsets sharing a common transmitter of the set of transmitters and at least two subsets that do not share a common transmitter of the set of transmitters;
- and
- a processor configured to generate a set of chirps using the set of transmitters, during which the processor is configured to:
- apply a beamforming operation on outputs of transmitters within each subset of transmitters;
- apply Doppler division multiple access (DDMA) to outputs of transmitters of the subsets of transmitters that do not share a common transmitter;
- and
- apply time division multiple access (TDMA) to outputs of transmitters of the subsets of transmitters that share a common transmitter.
A radar system comprising:
- an array of virtual elements formed by set of transmitters arranged to form phase centers, and a set of receivers, the set of transmitters including a first group of transmitters sharing a first phase center of the phase centers, a second group of transmitters sharing a third phase center of the phase centers, a third group of transmitters sharing the first phase center, and a fourth group of transmitters sharing a second phase center of the phase centers;
- and
- a processor coupled to the set of transmitters and configured to:
- generate a first set of chirps of a frame of chirps using the first and second groups of transmitters;
- and
- generate a second set of chirps of the frame of chirps using the third and fourth groups of transmitters.
Dependencies are inferred from the claim text.