Abstract: A method for performing in a positioning, navigation, tracking, frequency-measuring, or timing system is provided.

Abstract: A radar level gauge system include a transceiver; an antenna; a hollow waveguide for guiding the transmit signal from a first end facing the transceiver towards a second end facing the antenna; a housing including a heat-dissipating structure arranged at a first distance from the second end; a first thermal connection between the hollow waveguide and the heat-dissipating structure; and a second thermal connection between the hollow waveguide and the housing arranged at a second distance, shorter than the first distance, from the second end. The first and second thermal connection are arranged such that a thermal resistance of a first heat conduction path from the second end of the hollow waveguide through the first thermal connection to the heat-dissipating structure, is lower than a thermal resistance of a second heat conduction path from the second end of the hollow waveguide through the second thermal connection to the housing.

Abstract: A system includes at least one reception unit installed in an aircraft and configured for tracking satellites of the satellite navigation system of the GNSS type. The system includes a generation unit for generating an expected number corresponding to the number of satellites that the reception unit is expected to track, a detection unit including a comparison part for comparing the expected number with a tracked number corresponding to the number of satellites that the reception unit is actually tracking and a decision part for detecting a jamming, as a function of the result of the comparison made by the comparison part and transmitting detection data in the event of detection, and a transmission unit configured to transmit jamming detection data to at least one user device, the system making it possible to detect a jamming of a GNSS system in an automatic and reliable manner.

Abstract: Techniques are discussed for determining reflected returns in radar sensor data. In some instances, pairs of radar returns may be compared to one another. For example, a reflection point may be determined from a first position of a first radar return and a second position of a second radar return. Additional data, e.g., sensor data and/or map data, may be used to determine the presence of objects in the environment. The first return or the second return may be a reflected return if an object is disposed at the reflection point. In some instances, a vehicle, such as an autonomous vehicle, may be controlled at the exclusion of information from reflected returns.

Abstract: A radar device, for example for automotive applications, comprises a radar circuit, an antenna device and a signal processing device, wherein the radar circuit is configured to transceive a first antenna signal and a second antenna signal, wherein the first antenna signal occupies a first frequency band and the second antenna signal occupies a second frequency band that is separate from the first frequency band, wherein the antenna device is configured to transduce the first antenna signal via a first antenna of the antenna device and the second antenna signal via a second antenna of the antenna device, and wherein the signal processing device comprises a ranging module that is configured to jointly process the first and second antenna signal to determine a distance to a target object irradiated by the antenna device.

Abstract: The techniques of this disclosure enable frequency-modulated continuous-wave radar-based detection of living objects. Instead of generating a chirp pattern with each chirp separated by an idle period, a radar generates a chirp pattern with multiple chirps separated by an idle period. From applying a Fourier transform to receiver signals for each frame, the radar determines an amplitude as a function of range for each frame. The radar computes the standard deviation between the amplitudes of two frames and then, for each additional frame, the radar incrementally updates the standard deviation to be inclusive of the amplitude contribution of the additional frame. That is, rather than recalculate the standard deviation for each new frame, the radar increments the standard deviation by a fraction of the amplitude for the new frame, which is proportionate to the total quantity of frames generated thus far.

Abstract: A radar assembly and a method for operating the radar assembly is disclosed, where a first frequency comb generator is arranged in the transmitting unit between the first oscillator and the transmitting antenna and a second frequency comb generator is arranged in the receiving unit between the second oscillator and the first mixer. On the transmitter side a first frequency comb generator is controlled with the first oscillator frequency in order to generate a primary signal containing a plurality of frequency components, on the receiver side a second frequency comb generator is controlled with a second oscillator frequency in order to generate an output signal containing a plurality of frequency components, the output signal generated in such a way is mixed with a third oscillator frequency, and the intermediate frequency is generated by mixing the received reflected signal with the mixed signal.

Abstract: The present invention relates to a method of proof-testing a radar level gauge system arranged to determine a filling level of a product in a tank, the method comprising the steps of: transmitting an electromagnetic transmit signal towards a surface of the product in the tank; receiving an electromagnetic reflection signal resulting from reflection of the transmit signal at the surface of the product; forming a measurement representation based on the transmit signal and the reflection signal, the measurement representation comprising surface echo information indicative of the filling level of the product; adding, to the measurement representation, proof test echo information indicative of a predefined proof test level, resulting in a modified measurement representation; processing the modified measurement representation to determine a proof test level based on the modified measurement representation; and providing a signal indicative of a result of the processing.

Abstract: The systems and methods disclosed herein are configured to provide security to a vehicle. A system includes a point measurement device inside a space of a vehicle. The system identifies a threat if points that differ from a calibrated set of points are localized in an area of the space.

Abstract: A method for determining direction information for at least one target object in a radar system for a vehicle. The first detection information is provided by at least two receive antennas of the radar system, wherein the first detection information is specific for a first radar signal transmitted by a first transmit antenna of the radar system. The second detection information is provided by the at least two receive antennas of the radar system, wherein the second detection information is specific for a second radar signal transmitted by a second transmit antenna of the radar system. A first angle determination and a second angle determination are performed. At least one comparison of the first angle information with the second angle information is performed in order to detect an ambiguity in the first angle determination for the determination of the direction information.

Abstract: The invention relates to a radar system for capturing surroundings of a moving object, in particular a vehicle and/or a transportation apparatus, such as a crane, in particular, wherein the system is mounted or mountable on the moving object, wherein the radar system comprises at least two non-coherent radar modules (RM 1, RM 2, . . . RM N) having at least one transmitter antenna and at least one receiver antenna, wherein the radar modules (RM 1, RM 2, . . . RM N) are arranged or arrangeable in distributed fashion on the moving object, wherein provision is made of at least one evaluation device which is configured to process transmitted and received signals of the radar modules to form modified measurement signals in such a way that the modified measurement signals are coherent in relation to one another.

Abstract: A method of determination of the alignment angles of two or more road vehicle (1) borne radar sensors (4) for a road vehicle radar auto-alignment controller (3) starting from initially available rough estimates of alignment angles. From at least two radar sensors (4) are obtained signals related to range, azimuth and range rate to detections. The detections are screened (5) to determine detections from stationary targets. From the determined detections from stationary targets is derived a linearized signal processing model involving alignment angles, longitudinal and lateral velocity and yaw-rate of the road vehicle (1). A filter algorithm is applied to estimate the alignment angles. Based on the estimated alignment angles are produced signals suitable for causing a road vehicle (1) radar auto-alignment controller (3) to perform radar offset compensation.

Abstract: A method for determining at least one object information item of at least one target object (18) which is sensed with a radar system (12) of a vehicle (10), a radar system (12) and a driver assistance system (12) are described. Transmission signals (32a, 32b, 32c) are transmitted into a monitoring range (14) of the radar system (12) with three transmitters (Tx1, Tx2, Tx3). Echoes, which are reflected at the at least one target object (18), of the transmission signals (32a, 32b, 32c) are received as received signals (34a, 34b, 32c) with at least two receivers (RxA, RxB, RxC, RxD). The received signals (34a, 34b, 34c) are subjected to at least one multi-dimensional discrete Fourier transformation. At least one target signal is determined from the result of the Fourier transformation. An object information item is determined from the target signal.

Abstract: A system for testing a radar under test is provided. The system comprises an antenna array with a plurality of antenna elements, a plurality of transceivers downstream to the plurality of antenna elements and a processing unit. In this context, the processing unit is configured to communicate the radar under test by transmitting and/or receiving a two dimensional test pattern and to compare the two dimensional test pattern with a reference pattern.

Abstract: Methods for determining corrected positions of a global navigation satellite system (GNSS) rover using a GNSS base station and one or more GNSS reference stations include determining a statistical representation of position measurements from the GNSS reference stations and an instantaneous position measurement from the GNSS reference stations. A position correction is determined based on the statistical representation and the instantaneous position measurement. A corrected position of the GNSS rover is determined based on a position of the GNSS rover and the position correction.

Abstract: An object velocity detection method includes: obtaining a first reception signal and a second reception signal that are received in different time intervals through a radar sensor; determining a Doppler effect based on the first reception signal and the second reception signal; determining an angle value of an object based on a signal obtained by compensating for the Doppler effect; obtaining a compensated signal by compensating for the angle value in the second reception signal; and determining a velocity of the object based on the compensated signal.

Abstract: A radar arrangement includes a printed circuit board (PCB), an electronic component, and an antenna. The electronic component is arranged on the PCB and is used to generate a high-frequency signal. The PCB has at least four electrically conductive layers separated from one another by at least three electrically insulating layers. A first conductive inner layer is adjacent to a first conductive outer layer, and a second conductive inner layer is adjacent to a second conductive outer layer. The electronic component is arranged on the first conductive outer layer. The antenna is formed at least partially in the second outer layer. The signal generated by the electronic component is transmitted to the antenna, which is formed at least partially in the second conductive outer layer of the PCB, through a region of the conductive inner layers and insulating inner layers of the PCB.

Abstract: A radar system is provided and includes a radar transceiver integrated circuit (IC) and a processor coupled to the radar transceiver IC. The radar transceiver IC includes a chirp generator configured to generate a plurality of chirp signals and a phase shifter configured to induce a signal phase shift. The radar transceiver IC is configured to transmit a frame of chirps based on the plurality of chirp signals and generate a plurality of digital signals, each digital signal corresponding to a respective reflection received based on the plurality of chirp signals. The processor is configured to control the phase shifter to induce the signal phase shift in a first subset of chirp signals of the plurality of chirp signals and determine a phase shift induced in the first subset of chirp signals by the phase shifter based on the digital signal.

Abstract: A circuit includes a radio frequency (RF) channel including an input node and an output node and being configured to receive an RF oscillator signal at the input node and to provide an RF output signal at the output node; a mixer configured to mix an RF reference signal and an RF test signal representative of the RF output signal to generate a mixer output signal; an analog-to-digital converter configured to sample the mixer output signal in order to provide a sequence of sampled values; and a control circuit configured to provide a sequence of phase offsets by phase-shifting at least one of the RF test signal and the RF reference signal using one or more phase shifters, calculate a spectral value from the sequence of sampled values; and calculate estimated phase information indicating a phase of the RF output signal based on the spectral value.

Abstract: A radio detection and ranging (radar) signal processing device obtains radar data by compensating for a change in a carrier frequency of a sensed radar signal, and outputs a radar image map based on the obtained radar data. The radar signal processing method includes obtaining a beat frequency signal based on a radar transmission signal generated based on a frequency modulation model and a radar reflection signal obtained from the radar transmission signal being reflected from an object, and generating radar data by compensating the beat frequency signal for a carrier frequency change by the frequency modulation model.