A frequency modulated continuous wave (FMCW) radar device and a signal processing method thereof are provided. The frequency modulated continuous wave radar device includes a transmitter stage circuit, a frequency synthesizer, a receiver stage circuit, a pre-stage circuit, and a signal processing circuit. The transmitter stage circuit transmits a transmitting signal. The frequency synthesizer generates the transmitting signal associated with a chirp period. The receiver stage circuit receives a receiving signal including a periodic interference signal with a noise period associated with the chirp period. The pre-stage circuit outputs a to-be-processed signal including multiple frames according to the receiving signal and the transmitting signal. The signal processing circuit groups the frames into multiple frame groups. The signal processing circuit generates a processed signal by sampling at least one frame from the multiple frames in each of the frame groups with an identical sampling rule.

An electronic device includes an ultra-wide band (UWB) circuit, and at least one processor comprising a controller of UWB circuit. The at least one processor is configured to transmit, through UWB circuit operating in a first mode, a first signal for a first field in a first frame, transmit, through UWB circuit operating in the first mode, a second signal including designated information for a second field in the first frame, receive, through UWB circuit operating in the first mode, a first reflected signal related to the first signal and a second reflected signal related to the second signal, respectively, caused by an external object, according to a state of the designated information identified from the second reflected signal, obtain information on the external object based on the first reflected signal or transmit a second frame through UWB circuit operating in a second mode.

In an example, a method is implemented in a radar system. The method may include transmitting, via transmission channels, a frame of chirps, the chirps transmitted having a programmed frequency offset that is a function of a transmission channel of the transmission channels that is transmitting the frame of chirps, receiving, via a receive channel, a frame of reflected chirps, the reflected chirps comprising the chirps reflected by an object within a field of view of the radar system, and determining a Doppler domain representation of the frame of reflected chirps having a Doppler domain spectrum that includes multiple spectrum bands, the object represented in at least a portion of the spectrum bands based on the reflected chirps, wherein the programmed frequency is configured to cause the Doppler domain spectrum to include a number of spectrum bands greater than the number of transmission channels.

An electronic device includes a controller that performs control to enable switching between a first band mode such that a transmission wave is in a first band and a second band mode such that the transmission wave is in a second band broader than the first band. The controller performs control to switch to the second band mode when an object is detected within a predetermined distance in the first band mode.

A method for controlling a radar apparatus that detects an object using frequency modulation includes: performing first reception of a radio wave in a state where transmission of a radio wave for detecting the object is stopped, to obtain a first reception signal; performing second reception of a radio wave in a state where the transmission of the radio wave is stopped, to obtain a second reception signal, after the performing of the first reception; acquiring a strength of a difference signal between the first reception signal and the second reception signal; comparing the strength with a threshold value; and starting the transmission of the radio wave in a case where the strength is equal to or less than the first threshold value in the comparison.

Systems and methods for the generation of sensing signals and sensing signal configurations for a wireless communication network are provided. In an embodiment, a sensing node identifier (ID) associated with a network entity is determined. This sensing node ID is used to determine a sensing signal configuration, which includes a resource configuration and a symbol sequence. The resource configuration is selected from a set of physical resources associated with a wireless communication network. The symbol sequence is based on the sensing node ID and is specific to the network entity in the wireless communication network. A sensing signal can be transmitted according to the sensing signal configuration.

A radio frequency (RF) circuit includes an input terminal configured to receive a reception signal from an antenna; an output terminal configured to output a digital output signal; a receive path including a mixer and an analog-to-digital converter (ADC), wherein the receive path is coupled to and between the input and output terminals, wherein the receive path includes an analog portion and a digital portion, and wherein the ADC generates a digital signal based on an analog signal received from the analog portion; a test signal generator configured to generate an analog test signal injected into the analog portion of the receive path; and a digital processor configured to receive a digital test signal from the digital portion, the digital test signal being derived from the analog test signal, analyze a frequency spectrum of the digital test signal, and determine a quality of the digital test signal.

This disclosure concerns a method for mitigating radar interference in an area, carried out by a first radar sensor device on a first vehicle and including: transmitting to a broadcasting center, via a wireless communication, navigation information of the first radar sensor device, radar parameter information including the current radar operating parameters of the first radar sensor device and mitigation capability information indicating the capabilities of the first radar sensor device to change one or more radar parameters and mitigate radar interference; receiving from the broadcasting center an updated list of radar sensor devices in the area including, for each radar sensor device, a navigation information and a radar parameter information, the radar parameter information for the first radar sensor device including a new radar parameter assigned in compliance with the transmitted mitigation capability information; and activating the new radar parameter in the first radar sensor device.

This document discloses techniques, apparatuses, and systems for mitigating radar interference between radar sensor devices (e.g., on multiple vehicles), including various performed by a first radar sensor device (e.g., within a first vehicle). The first radar sensor device determines information about a driving scenario in a surrounding environment of the first radar sensor device based on information received from multiple sources. The first radar sensor may determine, based on the determined information about the driving scenario in the surrounding environment, how to change at least one radar parameter of the first radar sensor device to avoid a possible radar interference. The at least one radar parameter may be changed according to the determination. In this way, a radar sensor device may mitigate radar interferences and improve radar performance.

This application provides example detection signal transmitting methods, detection apparatuses, and storage medium. One example method includes determining an orientation of a field of view of a detection apparatus. One of a plurality of anti-interference parameters can then be selected as a target anti-interference parameter based on the orientation of the field of view of the detection apparatus and according to a predefined rule, where the plurality of anti-interference parameters are determined according to the predefined rule. A detection signal can then be transmitted based on the target anti-interference parameter.