An illustrative example detector for use on a vehicle includes a radiation emitter having a near field region that is defined at least in part by a wavelength of radiation emitted by the radiation emitter. A radiation steering device includes a plurality of reflectors, an actuator, and a controller. The reflectors are situated to reflect the radiation emitted by the radiation emitter. The reflectors are in the near field region and have at least one characteristic that limits any phase shift of the reflected radiation. The actuator is configured to adjust an orientation of the reflectors. The controller is configured to determine an orientation of the plurality of reflectors relative to the radiation emitter to steer the emitted radiation reflected from the reflectors in a determined direction. The controller is configured to control the actuator to achieve the determined orientation.

A radar is equipped with a main antenna having three radiation patterns, sum, difference and control, corresponding to the antenna, the radar comprises an auxiliary antennal device, composed of an antenna and of a rear radiating element which is situated at the rear of the antenna, fixed above the antenna and coupling means, the auxiliary antennal device: having three radiation patterns, sum, difference and control, the control pattern ensured for the direction opposite to the antenna by the rear radiating element; the antenna inclined to guarantee a maximum gain of its sum pattern in the elevational domain (60°-90°).

The present application describes a method including transmitting at least two radar signals by a radar unit of a vehicle, where a first signal is transmitted from a first location and a second signal is transmitted from a second location. The method also includes receiving a respective reflection signal associated with each of the transmitted signals. Additionally, the method includes determining, by a processor, at least one stationary object that caused a reflection. Further, the method includes based on the determined stationary object, determining, by the processor, an offset for the radar unit. The method yet further includes operating the radar unit based on the determined offset. Furthermore, the method includes controlling an autonomous vehicle based on the radar unit being operated with the determined offset.

Methods and systems are provided for controlling a radar system of a vehicle. Sensor information pertaining to an environment for the vehicle is received from a first sensor as the vehicle is operated. A beam of the radar system is adjusted by a processor based on the sensor information.

A synthetic aperture radar method for remote sensing of the surface of the Earth by means of a radar device on a flying object moving in an azimuth direction above the surface of the Earth, wherein the radar device includes an array of antenna elements for transmitting radar pulses in a transmitting operation and for receiving radar echoes of these radar pulses reflected at the surface of the Earth in a receiving operation. A calibration mode is carried out in which the transmission of the radar pulses in the transmitting operation is carried out with a pulse repetition rate such that only echo signals of a single radar echo are received by all antenna elements of the array at the same point in time in the receiving operation; in the receiving operation, the echo signals are recorded in a plurality of receiving channels, wherein a different antenna element is assigned to a respective receiving channel, and in the respective receiving channel the echo signals received by the assigned antenna element are digitized and directly stored, thereby obtaining digitized radar data; the digitized radar data are further processed to determine a set of calibrated parameters of the radar device for the SAR operating mode for obtaining SAR images.

A mechanism is provided for estimating mounting orientation yaw and pitch of a radar sensor without need of prior knowledge or information from any other sensor on an automobile. Embodiments estimate the sensor heading (e.g., azimuth) due to movement of the automobile from radial relative velocities and azimuths of radar target detections. This can be performed at every system cycle, when a new radar detection occurs. Embodiments then can estimate the sensor mounting orientation (e.g., yaw) from multiple sensor heading estimations. For further accuracy, embodiments can also take into account target elevation measurements to either more accurately determine sensor azimuth and yaw or to also determine mounting pitch orientation.

A mount for mounting an object, such as non-exclusively a radar sensor, on a surface, such as one of a vehicle, the mount comprising: a carrier; a fixed length strut which has a fixed length from a mounting point arranged to engage the surface and a pivot point about which it is mounted pivotally on the carrier; and two variable length struts, which each have a variable length from a mounting point arranged to engage the surface and a pivot point about which it is mounted pivotally on the carrier.

In a diagnostic apparatus, a diagnostic unit diagnoses whether there is vertical misalignment. The vertical misalignment is misalignment of the probing beam with respect to a designed beam axis position in a vertical direction, i.e. a height direction, of the vehicle. Based on detection performance information representing whether target detection performance by the beam sensor is likely to be lower than a predetermined detection performance, a determining unit causes the diagnostic unit to execute diagnosis of the vertical misalignment upon the detection performance information representing, as a first detection state, that the detection performance is not likely to be lower than the predetermined detection performance. The determining unit disables the diagnostic unit from executing diagnosis of the vertical misalignment upon the detection performance information representing, as a second detection state, that the detection performance is likely to be lower than the predetermined detection performance.

The present invention relates to the technical field of vehicle maintenance and device calibration, and discloses a vehicle-mounted radar calibration device and method. The vehicle-mounted radar calibration device includes a bracket apparatus and a radar calibration component. The radar calibration component is configured to be installed on the bracket apparatus and includes a base board. After calibration on the vertical plane of the base board is completed, the radar calibration component is configured to reflect a radar wave, emitted by a vehicle-mounted radar of a to-be-calibrated vehicle, to the vehicle-mounted radar, to calibrate the vehicle-mounted radar. In the present invention, after the vertical plane of the base board is calibrated, the radar calibration component is used to reflect the radar wave emitted by the vehicle-mounted radar to the vehicle-mounted radar.

A diagnostic apparatus includes an obtaining unit for obtaining horizontal misalignment information indicative of whether there is horizontal misalignment in a probing beam. The diagnostic apparatus includes a diagnostic unit for diagnosing whether there is vertical misalignment. The vertical misalignment is misalignment of the probing beam with respect to a designed beam axis position in a vertical direction. The vertical direction corresponds to a height direction of the vehicle. The diagnostic apparatus includes a determining unit for determining, based on the horizontal misalignment information, whether the diagnostic unit executes diagnosis of the vertical misalignment. The determining unit causes the diagnostic unit to execute diagnosis of the vertical misalignment upon the horizontal misalignment information representing that there is no horizontal misalignment. The determining unit disables the diagnostic unit from executing diagnosis of the vertical misalignment upon the horizontal misalignment information representing that there is horizontal misalignment.