摘要:
A radar apparatus configured to receive a transmission wave reflected by a target object by a plurality of antennas, includes a signal analysis unit configured to analyze reception waves received by the respective antennas, and to obtain an amplitude and a phase of each of the reception waves received at the respective antennas, the amplitude and the phase being obtained at a frequency with which a reception strength shows a peak; a direction detection unit configured to detect a direction of the target object based on the phases of the reception waves received by the respective antennas; an estimated amplitude and phase output unit configured to output an estimated amplitude and an estimated phase of each of reception waves to be received by the respective antennas, assuming that the target object exists in the direction detected by the direction detection unit; and a comparison unit configured to compare at least one of the amplitudes and the phases for each of the antennas such that the amplitude obtained by the signal analysis unit is compared with the amplitude output by the estimated amplitude and phase output unit, and the phase obtained by the signal analysis unit is compared with the phase output by the estimated amplitude and phase output unit.
摘要:
An object classification system (10) for an automated vehicle includes a lidar (22) and/or a camera (24), and a controller (40). The controller (40) determines a lidar-outline (42) and/or a camera-outline (68) of an object (18). Using the lidar (22), the controller (40) determines a transparency-characteristic (50) of the object (18) based on instances of spot-distances (26) from within the lidar-outline (42) of the object (18) that correspond to a backdrop-distance (48). Using the camera (24), the controller (40) determines a transparency-characteristic (50) of the object (18) based on instances of pixel-color (66) within the camera-outline (68) that correspond to a backdrop-color (72). The transparency-characteristic (50) may also be determined based on a combination of information from the lidar (22) and the camera (24). The controller (40) operates the host-vehicle (12) to avoid the object (18) when the transparency-characteristic (50) is less than a transparency-threshold (52).
摘要:
An active grille shutter (AGS) system for a vehicle can include a housing defining first, second, and third openings, the third opening being located between the first and second openings and being configured to receive an object detection device that is configured to detect objects in front of the vehicle, a first set of louvers arranged in the first opening, a second set of louvers arranged in the second opening, and a linkage connecting the first and second sets of louvers, wherein a set of actuators are configured to selectively open/close the first and second sets of louvers by driving the linkage or at least one of the first and second sets of louvers. The AGS system can be configured to be fully-integrated, semi-integrated, or standalone with respect to a grille assembly of the vehicle.
摘要:
A radar device is mounted on a vehicle, which is a moving object, and includes a doppler correction phase-rotation controller and a phase rotator. Based on the speed of the vehicle, the doppler correction phase-rotation controller calculates a Doppler correction phase-rotation amount for correcting a Doppler frequency due to movement of the vehicle. By using the Doppler correction phase-rotation amount, the phase rotator pre-corrects Doppler frequency components with respect to a radar transmission signal in each transmission interval of the radar transmission signal.
摘要:
Provided is a vehicle radar apparatus for providing three-dimensional (3D) information about an environment. The vehicle radar apparatus may include a transmitter configured to transmit electromagnetic waves, a receiver configured to receive reflected electromagnetic waves, and a signal processor configured to extract 3D information about the environment based on the reflected electromagnetic waves. The transmitter may transmit electromagnetic waves to the environment by performing a two-dimensional (2D) scan, and the receiver may receive the reflected electromagnetic waves by performing a one-dimensional (1 D) scan. Alternatively, the transmitter may transmit the electromagnetic waves to the environment by performing a 1 D scan, and the receiver may receive the reflected electromagnetic waves by performing a 2D scan.
摘要:
The invention relates to a method and to a device for calibrating assistance systems, preferably integrated into windscreens, of vehicles (34), said systems comprising a movable calibration wall (11) and two wheel pickups (20) which are each equipped with a laser (32), wherein within the scope of the method according to the invention it is ensured that the calibration wall (11) is positioned with an applied or printed-on calibration reference image at a defined distance parallel to the front of the vehicle, with the result that actual images of the calibration reference image are then captured by means of the assistance system and compared with a calibration reference image stored in the camera, wherein the calibration is concluded when this comparison documents the necessary correspondence between the actual image and the reference image within the scope of the predefined tolerances.
摘要:
In one aspect, the present application describes an apparatus for a radar system. The apparatus may include a vehicle with four radar units mounted on it. Each radar unit may be configured with a half-power scanning beamwidth and a respective broadside direction. The half-power scanning beamwidth of each radar unit may be configured to scan approximately 90 degrees. A first radar unit may have a broadside direction that is approximately 90 degrees from respective broadside directions of a second radar unit and a fourth radar unit. The second radar unit may have a broadside direction that is approximately 90 degrees from respective broadside directions of the first radar unit and a third radar unit. The third radar unit has a broadside direction that is approximately 90 degrees from respective broadside directions of the second radar unit and the fourth radar unit.
摘要:
Concepts and examples pertaining to reconfigurable radio frequency (RF) front end and antenna arrays for radar mode switching are described. A processor associated with a radar system selects a mode of a plurality of modes in which to operate the radar system. The processor then controls the radar system to operate in the selected mode by utilizing a plurality of antennas in a respective configuration of a plurality of configurations of the antennas which corresponds to the selected mode. Each configuration of the plurality of configurations of the antennas results in respective antenna characteristics. Each configuration of the plurality of configurations of the antennas utilizes a respective number of antennas of the plurality of antennas.
摘要:
The present invention relates to an apparatus (10) for sensing a vehicular environment when fitted to a vehicle (100). It is described to acquire (210) with a first sensing circuit (20) at least one first vehicular environment scene data. The first sensing circuit comprises at least one sensor (50), and the first sensing circuit is powered by a first power supply (70). A second sensing circuit (30) is used to acquire (220) at least one second vehicular environment scene data. The second sensing circuit comprises at least one sensor (60), and the second sensing circuit is powered by a second power supply (80). The at least one first vehicular scene data is provided (230) to a processing unit (40). The at least one second vehicular scene data is provided (240) to the processing unit. The processing unit determines (250) first vehicular control data on the basis of the first vehicular scene data. The processing unit determines (260) second vehicular control data on the basis of the second vehicular scene data. The first vehicular control data and the second vehicular control data are each independently useable by a vehicle to automatically perform at least one safety maneuver comprising one or more of: braking; deceleration; movement to a slow lane or hard shoulder.
摘要:
A processor generates first position information on a relative position between a camera and a radar, acquires, from the radar, second position information on a relative position between the radar and a reflector, the second position information being generated by using an arrival direction of the radar transmission wave, and calculates a displacement amount by comparing the first position information and the second position information with each other.