Provided is a radar device that can acquire three-dimensional information while mitigating an increase in the complexity and size of the device structure. A radar device 100 comprises: an antenna 110 having frequency characteristics in which the emission angle of the elevation angle direction changes according to the supplied frequency; a transmission signal formation unit (control/processing unit 101, oscillator 102, amplifier 103) that supplies a chirp signal to the antenna 110; and a reception processing unit (control/processing unit 101) that acquires a detection point for each frequency band using a reception signal for a transmission signal of each frequency band included in the chirp signal, and that acquires information regarding the height direction on the basis of the presence or absence of the detection points across a plurality of frequency bands.

Methods and systems for monitoring a health parameter in a person using a radar system are disclosed. A method involves performing stepped frequency scanning below the skin surface of a person using at least one transmit antenna and a two-dimensional array of receive antennas, the stepped frequency scanning being performed using frequency steps of a first step size, changing the first step size to a second different step size in response to a change in reflectivity of blood in a blood vessel of the person, performing stepped frequency scanning below the skin surface of the person using the second step size after the step size is changed from the first step size to the second step size, and outputting a signal that corresponds to a blood pressure level in the person in response to the stepped frequency scanning at the first step size and at the second step size.

A method for wirelessly synchronizing a radar detector to a radar transmitter includes wirelessly receiving a first instance of a frequency-modulated continuous-wave (FMCW) radar signal directly emitted by the radar transmitter, determining a frequency slope change event in the FMCW radar signal using the first instance of the FMCW radar signal and temporally synchronizing the radar detector to the radar transmitter based on the frequency slope change event. Determining the frequency slope change event may include generating a frequency slope monitoring signal. In some embodiments, generating the frequency slope monitoring signal comprises mixing the first instance of the FMCW radar signal with a second instance of the FMCW radar signal. The second instance of the FMCW radar signal may be a reflected instance or a locally delayed instance of the first instance. A corresponding apparatus, computer readable medium and system are also disclosed herein.

A method and system for providing a cooperative spectrum sharing model that jointly optimizes primary user equipment parameters for improved frequency agility and performance while mitigating mutual interference between the primary user equipment and secondary user equipment. Spectrum sensing is implemented to form a power spectral estimate of the electromagnetic environment (EME) and apply multi-objective optimization to adjust the operational parameters of the primary user equipment to mitigate interference.

A sensor system, which includes multiple sensors configured to transmit and receive continuous waves of frequency-modulated chirp signals by using radio waves, includes a storage section that stores multiple chirp patterns having different patterns of the chirp signals, and a setting section that selects a different chirp pattern for each sensor from the multiple chirp patterns and sets the selected chirp pattern in association with the sensor.

In some aspects, a device may receive a communication indicating a first radar signal pattern parameter set associated with another device. The device may select, based at least in part receiving the communication indicating the first radar signal pattern parameter set, a second radar signal pattern parameter set that is different from the first radar signal pattern parameter set. The device may transmit a radar signal using the second radar signal pattern parameter set. Numerous other aspects are provided.

A method, apparatus and system for improving co-channel operation of simultaneously operating, independent radio signals. The method, apparatus and system receive at least two co-channel RF signals, perform motion compensated correlation upon at least one of the at least two co-channel RF signals, and determine the direction of arrival of the at least one of the at least two co-channel RF signals. In response to the direction of arrival determined for the at least one of the at least two co-channel RF signals, an action to perform to improve co-channel operation of the at least two co-channel RF signals at a subject receiver is determined.

A method for operating multiple sensors of a vehicle in at least partially spatially coinciding detection areas and in a shared frequency domain. In the method, at a transmission point in time, at least two sensors transmit simultaneously on separate instantaneous frequencies separated by a frequency gap, the frequency gap including at least one instantaneous receive bandwidth of the sensors, each instantaneous frequency being blocked for a use by the sensors after the transmission point in time for the duration of a time gap, the time gap including at least one signal propagation time across a reception range of the sensors.

A method for operating a radar sensor system including multiple radar sensors operating independently of one another in a motor vehicle, wherein the radar sensors are synchronized with one another with respect to their transmission times and transmission frequencies in such a way that two radar signals whose frequency separation is smaller than a certain minimum frequency separation are at no point in time transmitted simultaneously.

A method for monitoring an FMCW radar sensor and an FMCW radar sensor, including multiple local oscillators. In the method, a first local oscillator signal of a first local oscillator of the local oscillators is mixed in a mixer with a second local oscillator signal of a second local oscillator of the local oscillators to form a baseband signal. The baseband signal is evaluated. A fault is detected due to a result of the evaluation. Methods for monitoring an FMCW radar sensor and an FMCW radar sensor including multiple high frequency components are described which each include a transceiver part for outputting a transmit signal to at least one antenna assigned to the high frequency component and for receiving a receive signal from at least one antenna assigned to the high frequency component.