The present disclosure relates to a hybrid multiple-input multiple-output (MIMO) radar concept. Via a first subset of a plurality of transmit channels and during a first time interval, first frequency-modulated continuous-wave (FMCW) radar signals are con-currently transmitted with different phase offsets among different transmit channels of the first subset in accordance with a first predefined code division multiplexing scheme. Via a second subset of the transmit channels and during a second time interval subsequent to the first time interval, second FMCW radar signals are concurrently transmitted with different phase offsets among different transmit channels of the second subset in accordance with a second predefined code division multiplexing scheme.

The invention relates to a system for controlling a traffic management at an intersection of at least two traffic routes, wherein the system comprises first radar sensor, which has a first detection region, for detecting road users on the first traffic route, a second radar sensor, which has a second detection region, for detecting road users on the second traffic route, wherein the first detection region and the second detection region overlap in at least one overlapping region, and and an electronic data processing device, which is configured to at least partially combine the sensor data of the first radar sensor and the sensor data of the second radar sensor into combination signals and to control the traffic management system at the intersection at least also as a function of combination signals.

A radar system processes signals in a flexible, adaptive manner to determine range, Doppler (velocity) and angle of objects in an environment. The radar system processes the received signal to achieve different objectives depending on one or more of a selected range resolution, a selected velocity resolution, and a selected angle of arrival resolution, as defined by memory requirements and processing requirements. The system allows improved resolution of range, Doppler and/or angle depending on the memory requirements and processing requirements. The system also adapts to changing environmental conditions including interfering radio signals.

Example embodiments described herein involve techniques for orthogonal Doppler coding for a radar system. An example method may involve causing, by a computing system coupled to a vehicle, a radar unit to transmit a plurality of radar signals into an environment of the vehicle using a two-dimensional (2D) transmission antenna array, wherein the radar unit is configured to use time division multiple access (TDMA) to isolate transmit channels along a horizontal direction of the 2D transmission antenna array and Doppler coding to isolate transmit channels along a vertical direction of the 2D transmission antenna array. The method may further involve receiving, by the computing system and from the radar unit, radar reflections corresponding to the plurality of radar signals, determining information representative of the environment based on the radar reflections, and providing control instructions to the vehicle based on the information representative of the environment.

A method of radar ranging comprises transmitting a digitally-modulated signal comprising successively in time, for each sequence in a plurality N of sequences, a plurality M+1 of repeats of said sequence, wherein each said sequence consists of a plurality L.sub.c of digitally-modulated chips, wherein at least one sequence in the plurality of sequences is different from another sequence in said plurality of sequences; receiving a version of the digitally-modulated signal reflected scattered by one or more physical targets; for each sequence in the plurality of sequences, performing a preliminary target estimation; and using each said preliminary target estimation for all sequences in the plurality of sequences, performing a final target estimation.

Methods and apparatuses pertaining to radar interference mitigation are described. A processor associated with an apparatus may generate a plurality of wave frames such that one or more aspects of the plurality of wave frames vary from one wave frame to another wave frame of the plurality of wave frames. Each of the plurality of wave frames may respectively include a plurality of chirps. A wireless transmitter associated with the apparatus may transmit the plurality of wave frames. A wireless receiver associated with the apparatus may receive one or more reflected waves comprising at least a portion of one or more of the wave frames reflected by an object. The processor may determine a distance between the object and the apparatus, a speed of the objet, or both, based on an analysis of the one or more reflected waves.

A radar sensing system for a vehicle includes a transmitter and a receiver. The transmitter is configured for installation and use on a vehicle. The transmitter is configured to transmit radio signals. The receiver is configured for installation and use on the vehicle. The receiver is configured to receive radio signals that include (i) the transmitted radio signals transmitted by the transmitter and reflected from objects in an environment, and (ii) other radio signals that include radio signals transmitted by at least one other radar sensing system. The receiver is configured to filter frequency modulated continuous wave (FMCW) radio signals from the received radio signals to produce filtered radio signals. The receiver is further configured to select between (i) the filtered radio signals, and (ii) the received radio signals before filtering. The filtered radio signals are selected when the other radio signals include FMCW radio signals.

A method of operating a modulated continuous-wave radar system at least includes steps of transmitting, with a modulation frequency, a plurality of n modulated continuous radar waves that represent mutually orthogonal codes towards a scene with a potential object to be detected, wherein the transmitted modulated continuous radar waves of the plurality of modulated continuous radar waves are consecutively transmitted with a constant time lag given by one nth of a period of the modulation frequency; digitally converting a plurality of reflected and received radar signals with a sampling rate that is equal to the modulation frequency; decoding individual range information for each received radar signal; and determining a range between the radar system and the object on the basis of the decoded individual range information.

A method of determining a distance from an object performed in an apparatus including a radar, the method including receiving a reflection signal produced by a transmission signal reflecting from the object, the transmission signal being modulated by a default code sequence; converting the reflection signal into a reflection code sequence; generating a subject correlation vector including at least one correlation between at least one assistance code sequence and the reflection code sequence; and determining a distance corresponding to the subject correlation vector by referencing a lookup table storing at least one reference correlation vector including at least one correlation between the at least one assistance code sequence and the default code sequence.

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.