A method for a radar system is described. In accordance with one example implementation, the method comprises generating a frequency-modulated RF oscillator signal and feeding the RF oscillator signal to a first transmitting channel and a second transmitting channel. The method further comprises generating a first RF transmission signal in the first transmitting channel based on the RF oscillator signal, emitting the first RF transmission signal via a first transmitting antenna, receiving a first RF radar signal via a receiving antenna, and converting the first RF radar signal to a baseband, as a result of which a first baseband signal is obtained, which has a first signal component having a first frequency and a first phase, where the first signal component is assignable to direct crosstalk from the first transmitting antenna. This procedure is repeated for the second transmitting channel.

An apparatus and a method for calibrating a zero point of a radar for a vehicle are provided. A horizontal angle shift, a vertical angle shift, and a rotational angle shift of the radar for the vehicle are corrected based on angles (a horizontal angle, a vertical angle, and a rotation angle) formed with a first reference reflector and angles (a horizontal angle, a vertical angle, and a rotational angle) formed with a second reference reflector, thereby calibrating the zero point of the radar for the vehicle with higher accuracy.

A method and a device for determining a radar cross section, a method for training an interaction model, a radar target emulator for manipulating a radar signal, and a test facility for a vehicle are described herein. The propagation of a virtual radar signal is simulated on the basis of an interaction model in a simulated environment scenario that contains the simulated radar target. An interaction of the virtual radar signal with the simulated radar target is modelled such that a physical variable, characterizing the virtual radar signal, is divided into a directional component that corresponds to a directed scattering of the virtual radar signal and into a diffuse component that corresponds to an isotropic scattering of the virtual radar signal. A value of the physical variable is determined at a receiver point in the simulated environment scenario, taking into account the directional component and the diffuse component, and the radar cross section of the simulated radar target is derived from the determined value of the physical variable at the receiver point.

A marker used to detect an axial deviation of a radio wave axis Ar of a radar unit is provided in front of the radar unit and outside a radar field of view range set based on a field of view angle of the radar unit on a vehicle. A relative position between the radar unit and the marker is different between before and after an axial deviation of the radio wave axis Ar of the radar unit occurs. Thus, an axial deviation (an amount of axial deviation in an azimuth direction and an amount of axial deviation in an elevation angle direction) of the radio wave axis Ar of the radar unit can be detected by obtaining a difference in marker detection position before and after the axial deviation by the radar unit.

A radar system may include: a transceiver configured to transmit a first radar signal into a field of view and to receive a second radar signal from the field of view; a processing unit configured to process the second radar signal, to generate a detection track, given by a signal amplitude distribution as a function of distance from the transceiver, and to detect presence of targets in the field of view from the generated detection track; and a marker located in the field of view, wherein the marker is arranged in a fixed position relative to the transceiver and wherein the marker is configured to receive the first radar signal and to transmit a diagnostic radar signal toward the transceiver as a function of the first radar signal. The processing unit may be further configured to store a predetermined diagnostic track, including at least a characteristic distance and signal amplitude.

A transceiver for a detection and ranging apparatus comprising: a transmitter chain comprising a first sequence generator configured to generate a first signal based on a digital sequence; an interference cancellation block comprising a second sequence generator configured to generate a second signal based on the same digital sequence used to generate the first signal, the second signal having a predetermined time delay relative to the first signal; and the receiver chain configured to receive a received signal for detection and ranging, the received signal having components comprising at least none, one, or more reflections of the transmission signal and a component comprising an interference signal, the receiver chain comprising a first analog signal mixer configured to provide an output signal by mixing the received signal and the second signal thereby cancelling the interference signal in the received signal.

Techniques and apparatuses are described that enable radar attenuation mitigation. To improve radar performance, characteristics of an attenuator and/or properties of a radar signal are determined to reduce attenuation of the radar signal due to the attenuator and enable a radar system to detect a target located on an opposite side of the attenuator. These techniques are beneficial in situations in which the attenuator is unavoidably located between the radar system and a target, either due to integration within other electronic devices or due to an operating environment. These techniques save power and cost by reducing the attenuation without increasing transmit power or changing material properties of the attenuator.

A radar sensor includes: a transceiver unit for emitting a radar beam along a beam path in an outgoing direction and receiving radar radiation along the beam path in an incoming direction; and a reference object placed in the beam path to redirect part of the outgoing radar beam in the incoming direction. The reference object is one of a plurality of reference objects placed in the radar beam. A size of the reference objects in at least one dimension is smaller than a wavelength of the radar beam.

A magazine for storing and launching countermeasures arranged in cartridges, comprising a plurality of longitudinal cartridge cases forming the magazine, where the magazine comprises a tilting means adapted to tilt the cartridge cases, such that the openings of the cartridge cases can be directed in a selected direction, and where the magazine comprises a tracking system comprising an active position sensor adapted to detect the position of an incoming object. The advantage of the invention is that a countermeasure can be directed towards an incoming object before it is launched.

A method for monitoring the performance range of a radar system placed behind a portion of a vehicle including, in an operational mode, the steps of: transmitting a first signal in a high range resolution mode from the radar system through the portion of the vehicle; receiving a first return signal comprising a part of the first signal that is reflected by the portion of the vehicle at the radar system; measuring the first return signal; comparing the first return signal with a calibration return signal representative of a part of the first signal that is reflected by the portion of the vehicle in a calibration mode; determining the relative loss of transmission of the portion of the vehicle from the comparing step.