Systems and methods of performing location tracking with ultra wideband (UWB) are provided. The system includes a network formed by base stations and tags. In operation, the system configures multiple Time Division Multiple Access (TDMA) slots within a predetermined time frame. The TDMA slots include a clock calibration packet (CCP) slot, personal area network (PAN) identifier request and response slots, and TDMA tag slots. In the CCP slot, clock synchronization is performed among the base stations and the tags. In the PAN identifier request and response slots, the base stations receive reservation requests from the tags, and send correspond reservation responses. In each TDMA tag slot, the base stations listen to ranging requests from each tag, and send corresponding ranging responses with corresponding timestamps indicating the corresponding TDMA tag slot for each tag. Each tag only wakes up during the corresponding TDMA tag slot, thus achieving low power consumption.

A method for operating a radar system for a vehicle in order to detect at least one target object in the surroundings of the vehicle, wherein the following steps are carried out: providing a first, a second, and at least one third transmit signal, transmitting the provided transmit signals, wherein the transmit signals are transmitted successively via a transmit antenna of the radar system, in each case with partial signals transmitted at time intervals, and the intervals of the partial signals differ for different transmit signals.

Embodiments of this application provide a radar system, and a signal processing method and apparatus. The radar system includes: a transmitting assembly, a receiving assembly, and a controller. The transmitting assembly is configured to generate and transmit N first signals, where characteristics of the N first signals are different, the characteristic includes a wavelength and/or a delay, and N is an integer greater than 1; the receiving assembly is configured to receive a second signal; and the controller is configured to determine, based on the characteristics of the N first signals, whether the second signal includes an echo signal corresponding to the first signal.

This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for radio frequency (RF) sensing in the millimeter-wave frequency spectrum that can be performed over multiple phases. During a session setup phase, a radar initiator identifies one or more wireless stations (STAs) that are capable of radar ranging and sets up a radar measurement session that includes at least one of the identified STAs. During a measurement negotiation phase, the radar initiator performs a respective beamforming training operation with each STA and indicates, to each STA, one or more parameters associated with the radar measurement session. During a radar measurement phase, the radar initiator transmits radar setup information to, and receives ranging information from, each STA. In some aspects, the radar initiator may perform an object detection operation that indicates a location of an object associated with the ranging information received from each radar STA.

A computer-implemented method is provided for identifying a target amid clutter and minimize cross-talk from receive signals returned therefrom via a Multiple Input Multiple Output (MIMO) radar system that emits transmit signals into a resolution cell that contains the target and the clutter. The method includes employing a match filter to estimate a set of parameters from each receive signal of the receive signals; determining interference correlation; estimating clutter correlation; forming an optimum detector with the estimated correlation for each receive signal among the receive signals; employing the optimum detector to estimate the target set of parameters from each receive signal as an estimated target parameter; returning to the forming operation in response to the estimated target parameter exceeding an established tolerance; and applying the estimated target parameter to the receive signals for submission to the MIMO radar system.

A resource determining method and apparatus, an electronic device, a storage medium, a program product, and a vehicle are provided, which are relate to interference listening and avoidance technologies of collaborative radars, and include: determining a first listening result of a first time-frequency resource set; when the first listening result meets a first congestion condition, reducing a time-frequency occupation ratio and/or transmit power of a first target detection signal to obtain a second target detection signal, wherein the first congestion condition includes: a congestion degree of any time-frequency resource in a second time-frequency resource set is greater than a first threshold, and the second time-frequency resource set is included in the first time-frequency resource set; and detecting a target based on the second target detection signal.

A system for radar tracking, preferably including one or more transmitter elements, receiver elements, and signal processors, and optionally including one or more velocity sensing modules. A method for radar tracking, preferably including transmitting probe signals, receiving reflected probe signals, and/or tracking environmental targets, and optionally including decoding the set of received probe signals. The method is preferably implemented using a radar system, but can additionally or alternatively be implemented using any other suitable wave-based detection system.

Embodiments of this application provide a signal processing method and apparatus, and a storage medium, applied to the radar field. One example method includes: performing channel listening based on a first signal and a second signal, and determining, based on a result of the channel listening, a first time-frequency resource for target detection, where the channel listening includes performing channel listening based on a first listening signal in a first time domain range and performing channel listening based on a second listening signal in a second time domain range, and a time domain resource of the first time-frequency resource is the first time domain range.

A non-transitory computer-readable storage device stores machine instructions which, when executed by a processor, cause the processor to determine a chirp period Tc for radar chirps in a radar frame. The chirp period Tc comprises a rising period Trise and a falling period Tfall. The processor determines, for each radar chirp in the radar frame, a corresponding randomized frequency characteristic during Tfall, and causes a radar sensor circuit to generate the radar chirps in the radar frame based on Tc, Trise, Tfall, and the corresponding randomized frequency characteristics. In some implementations, the machine instructions to determine the corresponding randomized frequency characteristic comprise machine instructions to determine a frequency step having a frequency f_step and a period Tstep. At least one of the frequency f_step and the period Tstep is dithered across radar chirps in the radar frame.

Certain aspects provide a method for radar detection by an apparatus. The method including transmitting a radar waveform in transmission time intervals (TTIs) to perform detection of a target object. The method further includes varying the radar waveform across TTIs based on one or more radar transmission parameters.