A radar detection method includes transforming a beat frequency signal of a radar into a two-dimensional spectrogram; intercepting, based on a time domain sliding step, a plurality of measurement units (MUs) whose time domain lengths are equal to a frequency modulation period of the radar from the two-dimensional spectrogram, where a length of the time domain sliding step is less than the frequency modulation period of the radar; and determining a radar detection result based on each of the plurality of MUs.

According to an aspect, a method of determining Doppler in a radar system comprising receiving a set of chirps, sampling in time the set of chirps to generate a set of non-uniform samples with one sample per chirp that is non-uniform in time in each chirp across the set of chirps, generating a first Doppler frequency from the set of non-uniform samples, generating a set of non-aliased Doppler frequencies for the first Doppler frequencies from a corresponding set of hypothesis, determining a first set of angles of arrival for every non-aliased Doppler frequency in the a set of non-aliased Doppler frequencies and selecting a first non-aliased Doppler frequency in the set of non-aliased Doppler frequencies that corresponds to the first angle of arrival with a minimum error in the a set of angles of arrival.

A Frequency Modulated Continuous Wave (FMCW) radar system is provided that includes a chirp profile storage component configured to store a chirp profile for each chirp of a frame of chirps and a timing engine coupled to the chirp profile storage component to receive each chirp profile in transmission order during transmission of the frame of chirps, in which the timing engine uses each chirp profile to configure a corresponding chirp.

There is provided a radar device. A signal processing unit is configured to: acquire first and second estimate peaks estimated as a first peak in a rising section and a second peak in a falling section; extract first and second history peaks existing in a predetermined range from the first and second estimate peaks. A determining unit is configured to determine that the signal processing unit has erroneously extracted the first peak corresponding to a still object as the first peak corresponding to a moving object, if an accuracy of pairing of the first history peak and a second object peak existing in a predetermined range apart from the first history peak by a predetermined distance is larger than an accuracy of pairing of the first and second history peaks in a situation where a distance between the radar device and the moving object decreases.

There is provided a radar device. An extracting unit extracts history peak signals according to estimated peak signals, from a difference frequency between a transmission signal and a reception signal obtained by receiving a reflected wave of a transmission wave based on the transmission signal from a target, in a first period and a second period. An estimating unit estimates current peak signals as the estimated peak signals based on extracted previous peak signals. A pairing unit pairs the history peak signal of the first period and the history peak signal of the second period. A re-pairing unit re-pairs the paired history peak signals, based on peak signals existing in a predetermined range including the paired history peak signals. An information generating unit generates information on the target based on a result of the pairing and a result of the re-pairing.

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 radar device according to the embodiments includes a deriving unit and a determining unit. The deriving unit derives, based on a received signal acquired by receiving a reflected wave obtained by reflecting a radar transmission wave transmitted to a periphery of an own vehicle on a target located on the periphery, a parameter related to the target and a detection distance of the target. The determining unit determines, from a given characteristic of the parameter and the parameter and the detection distance derived by the deriving unit, whether the target existing in a traveling direction of the own vehicle is a target that collides with the own vehicle when the own vehicle advances in the traveling direction or a target that does not collide with the own vehicle when the own vehicle advances in the traveling direction.

A radar device includes a signal processing unit and a target information output unit. The target information output unit outputs only pair data having addition reliability equal to or larger than a threshold to the outside of the radar device as target information. The signal processing unit determines whether a first target and a second target belong to the same object. The first target is pair data derived later than the second target. If it is determined that the first target and the second target belong to the same object, the signal processing unit transfers reliability of the second target to the first target.

There is provided a radar device which is mounted on a moving object and configured to detect a target on the basis of reception signals acquired by receiving reflected waves from the target by receiving antennae. A transmitting unit has a transmission axis substantially parallel to a traveling direction of the moving object. The transmitting unit is configured to transmit transmission waves around the transmission axis as a center thereof. A determining unit is configured to determine upward axis misalignment or downward axis misalignment of the transmission axis, on the basis of the reception signals acquired by receiving the reflected waves of the transmission waves.

There is provided a radar device. An estimating unit estimates peak signals corresponding to a target in the latest periods of each of UP and DOWN beat sections of a beat signal on the basis of histories of peak signals corresponding to the target in past periods of the UP and DOWN beat sections. A pairing unit extracts peak signals within predetermined ranges defined with reference to the estimate peak signals on the basis of the histories, and pairs the extracted peak signals. In a case where a distance to the target is equal to or shorter than a predetermined value, the pairing unit extracts peak signals corresponding to the target, from a first range which is a predetermined angular range defined with reference to the estimate peak signals, or a second range which is a predetermined transverse position range defined with reference to the estimate peak signals.