Object detection systems and methods are provided. An object detection system comprises a plurality of nodes, each node having a transmitter configured to transmit a radar signal as a beam, and one or more receivers configured to receive a reflected radar signal. The nodes and transmitters are arranged such that the radar beam of one transmitter at least partly overlaps with the radar beam from the transmitter at an adjacent one of the nodes. The object detection system comprises a processor configured to receive a digitised signal from each node, process the digitised signal to detect characteristics of any Doppler effects created by the movement of an object through one or more of the radar beams, compare the Doppler characteristics with Doppler signatures associated with known objects, and thereby classify the object.

Radar systems and methods utilizing multiple sub-radars, each sub-radar covering a different field of view. A radar system including: a plurality of independent sub-radars, each sub-radar, of the plurality of independent sub radars, including: a transmission antenna, including least one transmitter element, and a receiving antenna, including at least one receiver element for receiving returning signals, the transmission and receiving being directed such as to cover a three-dimensional field of view; and a processor, configured to receive updated output signals from the receiving antenna, and generate updated sub-radar data (USRD) indicative of updated characteristics of the field of view of the respective sub-radar; and a main processing unit, configured to receive USRD from the sub-radars and generate an updated composite map, indicative of characteristics of a 3D combined field of view, including at least some of the fields of view generated by the sub-radars.

The techniques of this disclosure describe a scalable cascading automotive radar system that generates a common oscillator signal enabling consecutive chirps to be output more quickly and precisely than any previous cascading automotive radar system, thereby reducing phase noise and improving performance. The scalable cascading automotive radar system combines a respective LO signal output from at least two primary transceivers to distribute the combined signals as a common oscillator signal to be input to all the transceivers of the radar system. Thus, settling time and resetting times that otherwise occur between chirps generated by other automotive radar systems are reduced because the common oscillator signal is no longer constrained to a single LO signal from a single primary transceiver.

A radio transceiver for communicating with one or more transceiver equipped targets, the transceiver including; a transmitter for transmitting radio signals in a transmit frequency band, wherein the transmitter is arranged to transmit a data signal in case a transceiver equipped target is present and to transmit a dummy signal in case a transceiver equipped target is not present, a receiver for receiving radio signals in a receive frequency band, and a detector for detecting backscattered radio signals in the transmit frequency band, wherein the detector is arranged to estimate a distance to at least one target object based on the backscattered radio signals.

In accordance with a first aspect of the present disclosure, a system is provided for facilitating detecting an external object, the system comprising: at least one first communication unit configured to transmit and receive one or more first signals; at least one second communication unit configured to transmit and receive one or more second signals; a controller configured to control the first communication unit and the second communication unit, wherein the controller is configured to cause the first communication unit and the second communication unit to operate concurrently and to use the first signals received by the first communication unit and the second signals received by the second communication unit while said first communication unit and second communication unit are operating concurrently for detecting the external object. In accordance with other aspects of the present disclosure, a corresponding method for facilitating detecting an external object is conceived, as well as a computer program for carrying out said method.

The disclosed computer-implemented method may include transmitting, by at least one radar device, to at least one transponder located within a physical environment surrounding a user, a frequency-modulated radar signal that has a first type of polarization, and receiving, by the at least one radar device, signals that have a second type of polarization, the second type of polarization being different than the first type of polarization, detecting, by a processing device communicatively coupled to the at least one radar device, a signal that has the second type of polarization and was returned to the at least one radar device from the at least one transponder in response to the frequency-modulated radar signal, and calculating, by the processing device, a distance between the at least one transponder and the at least one radar device. Various other methods, systems, and computer-readable media are also disclosed.

An ad hoc approach denoted as devoid clutter capture and filling (DeCCaF) that addresses the nonstationarity effects that arise when input radar waveform returns exhibiting dynamic spectra variations are processed to combat dynamic RFI is disclosed. Portions of the spectra of each input waveform return of a set of input radar waveform returns processed during the CPI may be filled with clutter information borrowed from other waveform returns of the set of waveform returns. DeCCaF may combined with an appropriate filter (e.g., a matched filter, a mismatched filter) to achieve results that are nearly indistinguishable from input radar waveform returns in which no spectral variation are present.

A detection device includes: a transmitter that transmits a high-frequency signal as a transmission signal; a receiver that receives a reception signal including a reflection signal formed by reflecting the transmission signal at a target; and a controller that detects the target based on a frequency of the reflection signal, and changes a frequency of the transmission signal based on a frequency of the reception signal.

The present invention relates to a device that processes a radar signal, and a method therefor. More particularly, the present invention relates to a device and a method for reducing an interference signal by predicting occurrence of an in-band interference signal. Particularly, the present invention provides a radar signal processing device and method, the radar signal processing device comprising: an interference reference flag configuration unit that divides a transmission signal into a plurality of blocks in preconfigured time units on a time axis, and configures an interference reference flag for one or more specific blocks selected among the plurality of blocks; an impulsive noise detection unit that detects whether an impulsive noise occurs in each of the plurality of blocks, by using a reception signal; an in-band flag configuration unit that configures an in-band flag by using the interference reference flag and a block in which the impulsive noise is detected; and an interference signal prediction unit that predicts introduction of an in-band interference signal according to whether an in-band flag exists.

A wireless communication device with localization capabilities comprises a first receive chain for receiving a first signal from a first static communication node, and at least a second receive chain for receiving at least a second signal from at least a second static communication node. The first and at least one second receive chains are configured to simultaneously receive the first and at least one second signals. The wireless communication device is configured to determine a first distance between the wireless communication device and the first static communication node on the basis of the first signal, determine at least a second distance between the wireless communication device and the at least one second static communication node on the basis of the at least one second signal, and determine a location of the wireless communication device on the basis of the first and least one second distances.