Back to results
US 12,704,589 B2Granted
Digital modulator radar transmitter leakage cancellation using frequency temporal filtering
AssigneeGM Cruise Holdings LLC
InventorsJessica Sanson, Andre Giere, Gustavo Adolfo Guarin Aristizabal, Jorge Julio Jacome Munoz, Kalin Kabakchiev
Life of this patent
Estimating the term…
Abstract
A radar system is configured to transmit via transmit antenna a digitally modulated carrier signal in successive transmission frames using different frequency subbands for each transmission frame, such that contiguous transmission frames do not use the same frequency subband. A receive antenna is configured to receive a radar return signal reflected by a target on a frequency subband used by the transmit antenna in the immediately preceding transmission frame so that the transmit antenna and the receive antenna use different subbands in a given transmission frame.
Claims20
A method performed by a radar system, the method comprising:
- continuously transmitting a radar signal from a transmit antenna toward a target, wherein during a first transmission frame the radar signal is transmitted using a first frequency subband;
- transmitting the radar signal using a second frequency subband during a second transmission frame, and continuing to transmit the radar signal in a continuous manner during each subsequent transmission frame, with the transmit antenna switching to a different frequency subband in each transmission frame;
- ensuring that, during each transmission frame, the transmit antenna and a receive antenna are never active in the same frequency subband at the same time;
- operating the receive antenna, during each transmission frame after the first transmission frame, in the frequency subband used by the transmit antenna in an immediately preceding transmission frame, such that the receive antenna is always tuned to the subband used by the transmit antenna in the immediately preceding frame, and at no point are the transmit antenna and receive antenna active in the same subband during the same frame;
- and
- receiving a radar return from the target at the receive antenna, the radar return based upon the radar signal reflecting from the target.
3 more elements
A radar system comprising:
- a transmit antenna that transmits a radar signal toward a target, the transmit antenna being configured to:
- continuously transmit the radar signal, wherein during a first transmission frame the radar signal is transmitted using a first frequency subband;
- transmit the radar signal using a second frequency subband during a second transmission frame, and continuing to transmit the radar signal in a continuous manner during each subsequent transmission frame, with the transmit antenna switching to a different frequency subband in each transmission frame;
- ensure that, during each transmission frame, the transmit antenna and a receive antenna are never active in the same frequency subband at the same time;
- and
- a receive antenna that receives a radar return from the target, the radar return based upon the radar signal reflecting from the target;
- wherein the receive antenna is configured to operate, during each transmission frame after the first transmission frame, in the frequency subband used by the transmit antenna in an immediately preceding transmission frame, and at no point are the transmit antenna and the receive antenna active in the same subband during the same frame.
4 more elements
A radar system comprising:
- a transmit antenna;
- a receive antenna;
- and
- a hardware logic component that is configured to perform acts comprising:
- causing the transmit antenna to continuously transmit a radar signal toward a target, wherein during a first transmission frame the radar signal is transmitted using a first frequency subband;
- and
- causing the transmit antenna to transmit the radar signal using a second frequency subband during a second transmission frame, and continuing to transmit the radar signal in a continuous manner during each subsequent transmission frame, with the transmit antenna switching to a different frequency subband in each transmission frame;
- ensuring that, during each transmission frame, the transmit antenna and the receive antenna are never active in the same frequency subband at the same time;
- causing the receive antenna to operate during each transmission frame after the first transmission frame in the frequency subband used by the transmit antenna in the immediately preceding transmission frame, such that the receive antenna is always tuned to the subband used by the transmit antenna in the immediately preceding frame, and at no point are the transmit antenna and receive antenna active in the same subband during the same frame;
- and
- detecting a radar return from the target at the receive antenna, the radar return based upon the radar signal reflecting from the target.
8 more elements
Dependencies are inferred from the claim text.