A frequency-modulated continuous wave (FMCW) radar system is presented. The FMCW radar system includes a receiver configured to receive a radar reflection signal. The radar system further includes an interference detection module, which is configured to identify a portion of the radar reflection signal corresponding to the time period during which the radar reflection signal exceeds a threshold. The FMCW radar system further includes a hysteresis module configured to adjust the identified portion of the radar reflection signal based on the portion of the signal and a hysteresis configuration. The FMCW radar system further includes a mitigation module configured to mitigate interference based on the output of the hysteresis module.

A device comprising circuitry configured to: obtain radar signal measurements simultaneously acquired by two or more radar sensors having overlapping fields of view, derive range information of one or more potential targets from samples of radar signal measurements of said two or more radar sensors acquired at the same time or during the same time interval, the range information of a single sample representing a ring segment of potential positions of a potential target at a particular range from the respective radar sensor in its field of view, determine intersection points of ring segments of the derived range information, determine a region of the scene having one of the highest densities of intersection points, select a ring segment per sensor that goes through the selected region, and determine the most likely target position of the potential target from the derived range information of the selected ring segments.

An active sensor system (1) has a first and a second emitter unit (2, 2′), as well as a detector unit (3, 3′) and a computing unit (4). The emitter units (2, 2′) are configured to emit respective measurement signals into corresponding emission spatial regions (A1, A2). The detector unit (3, 3′) is configured to generate at least one detector signal on the basis of reflected portions of the measurement signals, and the computing unit (4) is configured to generate a measurement data set on the basis of the at least one detector signal. The computing unit (4) is configured to identify at least one section (T1, T1′, T2) that is shaded with respect to at least one of the emitter units (2, 2′). The computing unit (4) is configured to generate the measurement data set taking into account the section (T1, T1′, T2) and/or to generate correction data for correcting the measurement data set.

In one example, an apparatus for multimode radar comprises: a transmit circuit; a receive circuit; and a controller configured to: transmit a first signal using the transmit circuit; set a maximum input signal level at the receive circuit, wherein the maximum input signal level is set based on a minimum of the first distance range; and detect, using the receive circuit, the reflected first signal; transmit a second signal using the transmit circuit; set a minimum input signal level at the receive circuit, wherein the minimum input signal level is set based on a maximum of the second distance range; detect, using the receive circuit, the reflected second signal; and measure a distance from an object based on one of the reflected first signal or the reflected second signal.

A vehicle radar system, apparatus and method use a radar control processing unit to generate a target response signal in at least a first dimension from compressed radar data signals and to perform cell-averaging constant false alarm rate (CA-CFAR) target detection by convolving the target response signal with a weighted kernel window signal in a frequency domain using a Fast Fourier Transform hardware accelerator, an element-wise multiplier, and an Inverse Fast Fourier Transform hardware accelerator to generate an output signal having a sign that indicates a target detection decision.

The disclosure herein generally relates to the field of determination of cardiopulmonary signals for multi-persons, and, more particularly, to determination of cardiopulmonary signals for multi-persons using in-body signals obtained by ultra-wide band (UWB) radar. The disclosed method determines of cardiopulmonary signals for multi-persons using in-body signals, wherein a UWB radar signals/waves reflected from inside a human body is utilized for efficient determination of cardiopulmonary signals. The disclosed method and system utilize the UWB radar signals to identify a number of persons along with several details about the persons that include a girth of the each identified person and the orientation of the identified person towards the one or more UWB radar. Further a chest wall distance, a breathing rate, a heart wall distance and a heart rate are determined for all the identified persons based on the identified girth and the identified orientation along with the UWB radar signals.

A radar system executes an ice crystal detection method where filtered radar power returns with atmospheric ice concentration from a single beam are correlated. Filtered power returns from a typical radar pulse sequence are compared to detect high-altitude ice crystals. Induvial, filtered pulses are correlated by bin.

A range profile digitization circuit for converting a repeating analog input signal into a time series of digital amplitude values, the converter comprising: a signal quantizer arranged to receive the analog input signal and a threshold input and arranged to output a binary value quantized output signal based on a comparison of the input signal with the threshold signal; a plurality of samplers each arranged to sample and hold its input signal upon receipt of a trigger signal; and for each sampler: a plurality of decoders and a demultiplexer arranged to receive an output from the sampler and pass it to a selected one of said decoders based on a selector input. With a plurality of decoders associated with each of the samplers, each sampler can be re-used during the building up of the range profile.

An object detection device includes: a transmission unit transmitting a first transmission wave; a reception unit receiving a first reception wave reflected by an object; a signal processing unit sampling a first processing target signal according to the first reception wave and acquiring a difference signal based on a difference between the first processing target signal for at least one sample at a certain detection timing, and the first processing target signal for a plurality of samples in at least one of first and second periods; a threshold setting unit setting a threshold as a comparison target with the value of the difference signal, based on variation in the values of the first processing target signal for the plurality of samples; and a detection unit detecting information about the object at the detection timing based on a comparison result between the value of the difference signal and the threshold.

The present invention relates a method of improving a radar system, a module for improving a radar system and an improved radar system that are more efficient than current radar systems and methods of using same. Specifically, in the context of space-time adaptive processing at high angle-doppler resolutions, this advanced radar system utilizes an improved estimator of the interference covariance matrix together with the plug-in whiten-then-match filter. This improvement (a) roughly optimizes the output signal-to-interference-plus-noise, thereby increasing the probability of accurately detecting targets' angular positions and radial velocities, (b) maintains a roughly constant, and thus controllable, false alarm rate, and (c) sometimes associates data preprocessing steps with a Reed-Mallett-Brennan detection loss, providing a guideline for rejecting certain preprocessing steps. Collectively, these advancements signify a considerable leap forward in radar technology.