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US 2021/0173040 A1Published application
Systems and methods for multipath beam nulling
AssigneeRaytheon Company
InventorBarbara PAUPLIS
Life of this patent
Estimating the term…
Abstract
A radar system and method are provided for reducing multipath interference signals. The multipath interference signals can be reduced by the radar system emitting electromagnetic waves that creates a null in the direction of expected multipath interference signals, such that the multipath interference signals are void (or substantially void) from signals received by the radar system.
Claims17
A method for reducing multipath interference, the method comprising:
- determining, by a radar system, a first set of digital beamforming weights based on a desired direction of one or more analog beams of the radar system, a desired direction of one or more digital beams, and an expected direction of the multipath interference signal;
- determining, by the radar system, a second set of digital beamforming weights based on the first set of digital beamforming weights to create a null in each of the one or more digital beams in the direction of the multipath interference signal;
- and
- applying, by the radar system, the second set of digital beamforming weights during a receive duration of the radar system such that signals received by the radar system are void of the multipath interference signal.
1 more element
A radar system for reducing multipath interference comprising:
- one or more antenna arrays, each antenna array includes a plurality of antennas that can transmit and receive electromagnetic signals;
- and
- a processor coupled to the one or more antenna arrays, the processor configured to control the one or more antenna arrays to:
- determine a first set of digital beamforming weights based on a desired direction of one or more analog beams of the radar system, a desired direction of one or more digital beams, and an expected direction of the multipath interference signal;
- determine a second set of digital beamforming weights based on the first set of digital beamforming weights to create a null in each of the one or more digital beams in the direction of the multipath interference signal;
- and
- apply the second set of digital beamforming weights during a receive duration of the radar system such that signals received by the radar system are void of the multipath interference signal.
4 more elements
A computer program product comprising instructions which, when the program is executed cause the computer to:
- determine a first set of digital beamforming weights based on a desired direction of one or more analog beams of the radar system, a desired direction of one or more digital beams, and an expected direction of the multipath interference signal;
- determine a second set of digital beamforming weights based on the first set of digital beamforming weights to create a null in each of the one or more digital beams in the direction of the multipath interference signal;
- and
- apply the second set of digital beamforming weights during a receive duration of the radar system such that signals received by the radar system are void of the multipath interference signal.
1 more element
Dependencies are inferred from the claim text.