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: A radar sensor comprises a radar transmit and receive unit configured to transmit radar waves to an external environment of the vehicle and to receive radar waves from the external environment of the vehicle, and an interface unit attached to the radar transmit and receive unit. One or more design and/or material parameters of the interface unit are adjusted to fit a predetermined installation position at the vehicle with respect to desired characteristics of the transmitted and received radar waves. A corresponding method for integrating a radar sensor in a vehicle is also disclosed.

Abstract: A radar system for a vehicle includes: a processing device having multiple transmit outputs and multiple receive inputs; a main transmit antenna to transmit main radar waves essentially parallel to a road, and coupled to the processing device via a first transmit output; a main receive antenna to receive reflections of the main radar waves off objects, and coupled via a first receive input; a first street condition monitoring (SCM) transmit antenna to transmit first polarized radar waves essentially directed to the road at a first polarization, and coupled via a second transmit output; and a first SCM receive antenna to receive, at the first polarization, reflections of the polarized radar waves off the road, and coupled via a second receive input. The system can include second SCM transmit and receive antennas coupled via a third transmit output and a third receive input and operating at a second polarization.

Abstract: A radar system for a vehicle includes: at least one main transmit antenna configured to transmit main radar waves essentially parallel to a road on which the vehicle is standing or driving; at least one main receive antenna configured to receive reflections of the main radar waves off objects on the road; a first street condition monitoring, SCM, transmit antenna configured to transmit first polarized radar waves essentially directed to the road at a first polarization; a second SCM transmit antenna configured to transmit second polarized radar waves essentially directed to the road at a second polarization different from the first polarization; a first SCM receive antenna configured to receive, at the first polarization, reflections of the polarized radar waves off the road; and a second SCM receive antenna configured to receive, at the second polarization, reflections of the polarized radar waves off the road.

Abstract: A method for operating an angle resolving radar device for automotive applications comprises: routing at least a first and second antenna signal between a radar circuit and an antenna device, wherein the first and second antenna signals are routed via a common signal port of the radar circuit; transducing between the first antenna signal and a first radiation field, the first radiation field having a first phase center, and between the second antenna signal and a second radiation field, the second radiation field having a second phase center, wherein a location of the second phase center is shifted with respect to a location of the first phase center; constructing at least one angle resolving virtual antenna array using the location of the first phase center as a first antenna position and the location of the second phase center of the second radiation field as a second antenna position.

Abstract: A method for operating an angle resolving radar device for automotive applications comprises: routing at least a first and second antenna signal between a radar circuit and an antenna device, wherein the first and second antenna signals are routed via a common signal port of the radar circuit; transducing between the first antenna signal and a first radiation field, the first radiation field having a first phase center, and between the second antenna signal and a second radiation field, the second radiation field having a second phase center, wherein a location of the second phase center is shifted with respect to a location of the first phase center; constructing at least one angle resolving virtual antenna array using the location of the first phase center as a first antenna position and the location of the second phase center of the second radiation field as a second antenna position.

Abstract: The present disclosure relates to the field of vehicle driving assistance and/or autonomous driving within a delimited area, such as an indoor space. The disclosure includes a computer-implemented method for vehicle driving assistance within a delimited area, which includes the followings steps performed by a central data processing system: receiving from a plurality of vehicles (Vi, i=1,2,3,...) located within the delimited area, through a wireless local area network covering said delimited area, sensing data from onboard sensors of the vehicles (Vi), whereby the sensing data from each vehicle (Vi) is related to an environment around said vehicle (Vi), centrally processing and fusing the sensing data from the plurality of vehicles (Vi); and transmitting to at least one target vehicle (Vi), through the wireless local area network, an information for vehicle driving assistance based on a result of the step of centrally processing and fusing.

Abstract: The present disclosure relates to apparatuses and methods for a radar device. For example, an antenna device has a first set of antennas to establish first propagation channels and a second set of antennas to establish second propagation channels. A signal processing device determines a first differential phase shift among first radar signals propagating via the first propagation channels and a second differential phase shift among second radar signals propagating via the second propagation channels. Antennas of the first set are located at positions that generate the first differential phase shift for a first multitude of target angles, and antennas of the second set are located at positions that generate the second differential phase shift for a second multitude of target angles. The processing device determines an angular position of a target object as a unique target angle that is part of the first and second multitude of target angles.

Abstract: A computer implemented method for determining a position, and/or an acceleration, and/or an angular rate and/or an orientation of a vehicle includes the following steps carried out by computer hardware components: determining first measurement data using a first sensor; determining a preliminary position and/or a preliminary orientation based on the first measurement data; determining second measurement data using a second sensor, wherein the second sensor includes a radar sensor and/or a LIDAR sensor and/or a camera; determining a preliminary acceleration and/or a preliminary angular rate based on the second measurement data; and determining a final position, and/or a final acceleration, and/or a final angular rate and/or a final orientation based on the preliminary acceleration and/or the preliminary angular rate, and the preliminary position and/or the preliminary orientation.

Abstract: A method is provided for determining a road condition by using a radar system having transmitter and receiving units for transmitting and receiving radar waves having two different polarizations and providing transmit and receive signals indicating an intensity of the transmitted and received radar waves. Co-polarized backscattering coefficients and at least one cross-polarized backscattering coefficient are determined based on the transmit and receive signals. If the cross-polarized backscattering coefficient is greater than or equal to a threshold, the road condition is determined based on a ratio of the co-polarized backscattering coefficients and based on a difference of one of the co-polarized backscattering coefficients and the cross-polarized backscattering coefficient. If the cross-polarized backscattering coefficient is smaller than the threshold, the road condition is determined based on the ratio and a difference of the co-polarized backscattering coefficients.

Abstract: A method is provided for determining a road condition by using a radar system having transmitter and receiving units for transmitting and receiving radar waves having two different polarizations and providing transmit and receive signals indicating an intensity of the transmitted and received radar waves. Co-polarized backscattering coefficients and at least one cross-polarized backscattering coefficient are determined based on the transmit and receive signals. If the cross-polarized backscattering coefficient is greater than or equal to a threshold, the road condition is determined based on a ratio of the co-polarized backscattering coefficients and based on a difference of one of the co-polarized backscattering coefficients and the cross-polarized backscattering coefficient. If the cross-polarized backscattering coefficient is smaller than the threshold, the road condition is determined based on the ratio and a difference of the co-polarized backscattering coefficients.

Abstract: A radar antenna assembly for a vehicle includes a feed horn configured to transmit and/or receive radar signals and a metallic component of the vehicle. The metallic component of the vehicle includes a curved or faceted surface portion, and the feed horn is positioned such that the curved or faceted surface portion forms a reflector for the feed horn.

Abstract: Disclosed are aspects of a radar system for a vehicle that includes a first radar antenna assembly connected to at least one radar transmitter for transmitting radar signals into a traffic space and a second radar antenna assembly connected to at least one radar receiver for receiving radar signals reflected by objects present in the traffic space. The first radar antenna assembly is spaced apart from the second radar antenna assembly. The at least one radar transmitter is coupled to the at least one radar receiver by a synchronization line for a bistatic radar operation of the radar system. Further, at least one of the first radar antenna assembly or the second radar antenna assembly includes a feed horn and a reflector for the feed horn.

Abstract: Disclosed are aspects of a radar system for a vehicle that includes a radar circuit for generating and processing radar signals, wherein the radar circuit includes a ground plane connector for an electrical connection with an antenna ground plane. The radar system also includes a radar antenna assembly for transmitting radar signals into a traffic space and for receiving radar signals reflected by objects present in the traffic space. The radar system further includes a component of the vehicle. The ground plane connector is electrically connected to the component of the vehicle.

Abstract: This document describes waveguides that use a combination of air dielectric filled channels and non-air dielectric filled channels to obtain beneficial attributes of both air and dielectric waveguides. EM energy loss inside the waveguide compares to a traditional air waveguide. However, with a smaller size than a comparable air waveguide, the example waveguide can occupy less area of a chip or package than a comparable air waveguide of a traditional design. The waveguide has a routing portion with hollow channels filled with an air dielectric. Radiation channels corresponding to each of the hollow channels are loaded with a non-air dielectric. A surface of each of the radiation channels allows EM energy to escape the non-air dielectric. The described waveguide may be particularly advantageous for use in an automotive context, for example, detecting objects in a roadway in a travel path of a vehicle.

Abstract: A radar device comprises a radar circuit configured to transceive first radar signals that occupy a first frequency band and second radar signals that occupy a second frequency band. An antenna device of the radar device comprises a first set and a second set of antennas and is configured to selectively transduce the first radar signals via the first set and not via the second set and to selectively transduce the second radar signals via the second set and not via the first set. A processing device of the radar device detects from the first radar signals target reflections via first propagation channels and from the second radar signals target reflections via second propagation channels. The signal processing device jointly evaluates the target reflections via the first and second propagation channels to form a common virtual antenna array for determining an angular position of a target object.

Abstract: An automotive radar system for detecting target objects in a traffic scene comprises an arrangement of transmit antennas, an arrangement of receive antennas, and a radar circuit connected to the transmit antennas and the receive antennas. Each transmit antenna is configured to transmit coherent superpositions of respective first transmit radar signals having first transmit polarizations and respective second transmit radar signals having second transmit polarizations. Each receive antenna is configured to separate target reflections of the transmitted radar signals received from the target objects into first signal portions having first receive polarizations and into second signal portions having second receive polarizations.

Abstract: An automotive radar system for detecting target objects in a traffic scene comprises at least one transmit antenna, at least one receive antenna, and a radar circuit connected to the at least one transmit and receive antenna. The transmit antenna is configured to transmit the transmit radar signal having variable polarization. A logic unit of the radar system is configured to receive information on a full polarization state of an incoming radar signal emitted by at least one other radar device located within the traffic scene and the logic unit is configured to determine a transmit polarization state that has maximum isolation from the polarization state of the at least one incoming radar signal. The radar circuit is configured to adjust a polarization of the transmit radar signal transmitted via the at least one transmit antenna to match the determined transmit polarization state.

Abstract: A radar device for automotive applications comprises a radar circuit configured to process a radar signal that has a first signal portion and a second signal portion, wherein the first signal portion occupies a first frequency band and the second signal portion occupies a second frequency band that is separate from the first frequency band. An antenna device of the radar device comprises a first and second antenna element that are both coupled to a common signal port of the radar circuit and the radar device is configured to route both the first signal portion and the second signal portion via the common signal port between the radar circuit and the antenna device. The antenna device is a frequency selective antenna device that transduces the first signal portion via the first antenna element and not via the second antenna element and that transduces the second signal portion at least via the second antenna element.

Abstract: A method for operating an angle resolving radar device for automotive applications comprises: routing at least a first and second antenna signal between a radar circuit and an antenna device, wherein the first and second antenna signals are routed via a common signal port of the radar circuit; transducing between the first antenna signal and a first radiation field, the first radiation field having a first phase center, and between the second antenna signal and a second radiation field, the second radiation field having a second phase center, wherein a location of the second phase center is shifted with respect to a location of the first phase center; constructing at least one angle resolving virtual antenna array using the location of the first phase center as a first antenna position and the location of the second phase center of the second radiation field as a second antenna position.