Abstract: Aspects of the present disclosure are directed to a method and/or apparatus involving frequency modulated continuous wave (FMCW) radar signals. As my be implemented in accordance with one or more embodiments, receiver circuitry is configured and arranged to receive a FMCW radar signal having an information signal embedded into a radar waveform, and to indicate a relationship in the FMCW radar signal between beat frequency magnitude and time delay. A filter processing circuit is configured and arranged to filter the information signal in the FMCW radar signal by applying a group delay function based on the relationship between beat frequency magnitude and time delay. Signal processing circuitry is configured and arranged to detect a remote object by using the filtered FMCW radar signal.

Abstract: A radar system comprising a transmitter controller, configured to control an oscillator such that the oscillator provides a transmit-radar-signal a transmit-first-overlapping-portion and a transmit-second-overlapping-portion that corresponds to the instantaneous frequency of the transmit-first-frequency-overlapping-portion. The transmitter controller is configured to reconfigure the oscillator from a first-operating-mode to a second-operating-mode between a transmit-first-ramp-frequency-portion and a transmit-second-ramp rising-frequency-portion. The radar system also includes a receiver controller configured to receive a received-radar-signal that represents a reflected version of the transmit-radar-signal, and provide a combined-overlapping-portion based on a combination of the transmit-first-overlapping-portion, the transmit-second-overlapping-portion, a received-first-overlapping-portion, and a received-second-overlapping-portion.

Abstract: There is provided a radar sensor and method. The radar sensor comprises a plurality of transmit and receive antennas, a transceiver, a digital signal processor, a filter and an interface. The transceiver is configured to digitize received radar signals to provide a plurality of digital samples. The digital signal processor is configured to form a measurement matrix by transforming the plurality of digital samples into a distance/relative velocity matrix for each combination of the transmit and receive antennas. The filter is configured to identify samples forming the measurement matrix having a signal to noise ratio higher than a threshold value. The interface is configured to transmit the identified samples and their location in the measurement matrix to a remote host processor configured to further carry out direction of arrival processing on the identified samples.

Abstract: Various exemplary embodiments relate to a method for determining the velocity of an object using radar system having a processor, including: receiving, by a processor, a first digital signal corresponding to a first transmit signal; receiving, by the processor, a second digital signal corresponding to a second transmit signal; processing the first digital signal to produce a first range/relative velocity matrix; detecting objects in the first range/relative velocity matrix to produce a first detection vector; unfolding the first detection vector; processing the second digital signal to produce a second range/relative velocity matrix; interpolating the second range/relative velocity matrix in the relative velocity direction wherein the interpolated second range/relative velocity matrix has a frequency spacing corresponding to the frequency spacing of the first range/relative range velocity matrix in the relative velocity direction; detecting objects in the second range/relative velocity matrix to produce a sec

Abstract: A radar system comprising a transmitter controller, configured to control an oscillator such that the oscillator provides a transmit-radar-signal a transmit-first-overlapping-portion and a transmit-second-overlapping-portion that corresponds to the instantaneous frequency of the transmit-first-frequency-overlapping-portion. The transmitter controller is configured to reconfigure the oscillator from a first-operating-mode to a second-operating-mode between a transmit-first-ramp-frequency-portion and a transmit-second-ramp rising-frequency-portion. The radar system also includes a receiver controller configured to receive a received-radar-signal that represents a reflected version of the transmit-radar-signal, and provide a combined-overlapping-portion based on a combination of the transmit-first-overlapping-portion, the transmit-second-overlapping-portion, a received-first-overlapping-portion, and a received-second-overlapping-portion.

Abstract: Various exemplary embodiments relate to a method for detecting an object using radar system having M transmit antennas, N receive antennas, and a processor, including: receiving, by the processor, N×M digital signals, wherein the N receivers receive M received signals corresponding to M sequences of encoded transmitted signals resulting in N×M digital signals; processing the N×M digital signals to produce N×M first range/relative velocity matrices; applying a phase compensation to N×(M?1) first range/relative velocity matrices to compensate for a difference in range between the N×(M?1) first range/relative velocity matrices and the Mth range/velocity matrix; decoding the M phase compensated range/relative velocity matrices for the N receivers using an inverse of the transmit encoding to produce M decoded phase range/relative velocity matrices for the N receivers; detecting objects using the M range/relative velocity matrices for the N receivers to produce a detection vector.

Abstract: Various exemplary embodiments relate to a method for detecting an object using radar system having M transmit antennas, N receive antennas, and a processor, including: receiving, by the processor, N×M digital signals, wherein the N receivers receive M received signals corresponding to M sequences of encoded transmitted signals resulting in N×M digital signals; processing the N×M digital signals to produce N×M first range/relative velocity matrices; applying a phase compensation to N×(M?1) first range/relative velocity matrices to compensate for a difference in range between the N×(M?1) first range/relative velocity matrices and the Mth range/velocity matrix; decoding the M phase compensated range/relative velocity matrices for the N receivers using an inverse of the transmit encoding to produce M decoded phase range/relative velocity matrices for the N receivers; detecting objects using the M range/relative velocity matrices for the N receivers to produce a detection vector.

Abstract: Various exemplary embodiments relate to a method for determining the velocity of an object using radar system having a processor, including: receiving, by a processor, a first digital signal corresponding to a first transmit signal; receiving, by the processor, a second digital signal corresponding to a second transmit signal; processing the first digital signal to produce a first range/relative velocity matrix; detecting objects in the first range/relative velocity matrix to produce a first detection vector; unfolding the first detection vector; processing the second digital signal to produce a second range/relative velocity matrix; interpolating the second range/relative velocity matrix in the relative velocity direction wherein the interpolated second range/relative velocity matrix has a frequency spacing corresponding to the frequency spacing of the first range/relative range velocity matrix in the relative velocity direction; detecting objects in the second range/relative velocity matrix to produce a sec