Digital chirp ofdm radar and radar sensing methods
AssigneeNXP B.V.
InventorsWilhelmus Johannes van Houtum, Ashish Pandharipande, Vinicius Oliari Couto Dias
Life of this patent
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Abstract
A radar transceiver includes a radar transmitter and a radar receiver. The radar transmitter includes generation circuitry to generate a digital radar chirp sequence, and one or more digital-to-analog converters to convert the digital radar chirp sequence into a radar signal to be transmitted via one or more transmit antennas. The radar receiver includes one or more analog-to-digital converters to convert a received reflection of the radar signal to a received digital signal, and a mixer to mix the received digital signal with the digital chirp sequence to generate a digital de-chirped signal for velocity estimation followed by range estimation.
Claims20
A radar transceiver comprising:
- a radar transmitter comprising:
- generation circuitry to generate a digital radar chirp sequence;
- one or more digital-to-analog converters to convert the digital radar chirp sequence into a radar signal to be transmitted via one or more transmit antennas;
- and
- a radar receiver comprising:
- one or more analog-to-digital converters to convert a received reflection of the radar signal to a received digital signal;
- and
- a mixer to mix the received digital signal with the digital radar chirp sequence to generate a digital de-chirped signal for velocity processing followed by range processing.
A method comprising:
- generating, at a transmitter of a radar transceiver, a radar signal for transmission based on a digital radar chirp sequence generated using orthogonal frequency digital multiplexing (OFDM);
- transmitting the radar signal via one or more transmit antennas of the transmitter;
- receiving a reflection of the radar signal at one or more receive antennas coupled to a receiver of the radar transceiver;
- converting, at one or more analog-to-digital converters, the received reflection to a received digital signal;
- and
- mixing the received digital signal with the digital radar chirp sequence to generate a digital de-chirped signal for velocity processing followed by range processing.
A radar processing device comprising:
- one or more transmit antennas for transmitting a radar signal based on a digital radar chirp sequence;
- one or more receive antennas for receiving a reflection of the radar signal;
- and
- signal processing circuitry to:
- convert the received reflection of the radar signal to a received digital signal;
- and
- mix the received digital signal with the digital radar chirp sequence to a digital de-chirped signal for velocity processing followed by range processing.
Dependencies are inferred from the claim text.