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US 10,502,824 B2Granted
Frequency modulation scheme for FMCW radar
AssigneeInfineon Technologies AG
InventorsAndre Roger, Ygnace Romain, Farhan Bin Khalid
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Abstract
A method for a radar transmitter is described herein. In accordance with one exemplary embodiment, the method includes generating an RF transmit signal composed of at least one sequence of sub-sequent chirp pulses, wherein pseudo-randomly selected chirp pulses are blanked, and radiating the RF transmit signal via at least one antenna as radar signal.
Claims28
A transmitter circuit for a FMCW radar sensor, the transmitter circuit comprising:
- an RF oscillator that operably generates a frequency-modulated RF transmit signal;
- wherein the RF transmit signal is composed of at least one chirp sequence,
- wherein each chirp sequence includes a defined number of consecutive chirp pulses having a defined pulse length,
- wherein, in each chirp sequence, randomly selected chirp pulses are omitted.
1 more element
A method for an FMCW radar device, the method comprising:
- generating an RF transmit signal composed of at least one chirp sequence each chirp sequence including a defined number of consecutive chirp pulses having a defined pulse length,
- wherein, in each chirp sequence, randomly selected chirp pulses are omitted;
- radiating the RF transmit signal via at least one antenna as radar signal.
A method for an FMCW radar device, the method comprising:
- generating an RF transmit signal composed of at least one chirp sequence, each chirp sequence including a defined number of consecutive chirp pulses having a defined pulse length,
- wherein, in each chirp sequence, randomly selected chirp pulses are omitted;
- radiating the RF transmit signal via at least one antenna as radar signal;
- receiving, as radar echo signal, a portion of the radar signal, which is back-scattered at a radar target, the radar echo signal including an echo of the chirp pulses of the radiated radar signal;
- and
- down-converting the radar echo signal from an RF band into a base-band or IF-band and digitizing the down-converted radar echo signal to obtain a digital signal for each chirp pulse included in the radar echo signal;
- and
- calculating a Range-Doppler map based on the digital signals.
5 more elements
Dependencies are inferred from the claim text.