Abstract:
In accordance with one embodiment, a radar system with auto-alignment suitable for use in an automated vehicle is provided. The system includes a radar-sensor, a speed-sensor, and a controller. The radar-sensor is used to detect objects present in a field-of-view proximate to a host-vehicle on which the radar-sensor is mounted. The radar-sensor is operable to determine a measured-range-rate (dRm), a measured-azimuth-angle (Am), and a measured-elevation-angle (Em) to each of at least three objects present in the field-of-view. The speed-sensor is used to determine a measured-speed (Sm) of the host-vehicle. The controller is in communication with the radar-sensor and the speed-sensor. The controller is configured to simultaneously determine a speed-scaling-error (Bs) of the measured-speed, an azimuth-misalignment (Ba) of the radar-sensor, and an elevation-misalignment (Be) of the radar-sensor based on the measured-range-rate, the measured-azimuth-angle, and the measured-elevation-angle to each of the at least three objects, while the host-vehicle is moving.
Abstract:
Provided are a vertical alignment apparatus and method for a vehicle radar. The vertical alignment apparatus includes a case at which a shaft is formed, an antenna that is coupled with the shaft and is disposed to be rotatable about the shaft in a vertical direction, an antenna rotary member that rotates the antenna, and a stopper that limits an angle of rotation of the antenna.
Abstract:
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°).
Abstract:
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.
Abstract:
Disclosed herein are an autonomous emergency braking system and a method of controlling the same, capable of autonomously performing emergency braking using information detected by a radar sensor. The autonomous emergency braking system includes a radar sensor and an ECU. The radar sensor transmits a radio wave and receives a wave reflected from an object in front of a vehicle, so as to detect the object in front of the vehicle. The ECU receives object detection information from the radar sensor, and stops or puts off autonomous emergency braking when the number of times the object is detected within a predetermined distance is equal to or greater than a predetermined number of times, based on the received object detection information.
Abstract:
In an in-vehicle radar device, as a vertical azimuth which is an azimuth of a target in a direction perpendicular to a ground surface, a real image vertical azimuth which is an azimuth of a real image existing above ground is calculated from a reflected wave generated when a transmission signal transmitted from a transmission antenna is reflected from the target, and a virtual image vertical azimuth which is an azimuth of a virtual image existing underground is calculated from a reflected wave generated when the transmission signal transmitted from the transmission antenna is reflected from the target and reflected again from the ground surface. Next, in the in-vehicle radar device, an angle difference between the real image vertical azimuth and the virtual image vertical azimuth is calculated, and a height of the target from the ground surface is calculated using the calculated angle difference.
Abstract:
A device for a vehicle, particularly a motor vehicle, includes an environment sensor system which has at least one environment sensor for contactlessly detecting at least one environment region, means for adjusting the environment region to be detected, and a device for determining the environment region to be detected. The device has a position sensor which detects the tilting of the vehicle in respect of a vehicle base, and the means adjust the environment region to be detected depending on the tilt of the vehicle.
Abstract:
Disclosed herein are an automotive radar apparatus and a method of controlling automotive radar, capable of recognizing a road gradient by easily adjusting a vertical scan angle based on intensities of radio waves received by radar of a vehicle traveling on a road to recognize a gradient of the road, and of preventing deterioration of detection performance by vertically adjusting a radio wave elevation angle of the radar so as to be suitable for the road gradient. The automotive radar apparatus includes an antenna unit transmitting radar signals or receiving reflected radar signals according to elevation angles of a transmission antenna or a receiving antenna, and a control unit searching a center angle based on received power according to the elevation angles to set a beam corresponding to the center angle as a center beam and setting ranges of interest on the basis of the center beam.
Abstract:
A device for a vehicle, particularly a motor vehicle, includes an environment sensor system which has at least one environment sensor for contactlessly detecting at least one environment region, means for adjusting the environment region to be detected, and a device for determining the environment region to be detected. The device has a position sensor which detects the tilting of the vehicle in respect of a vehicle base, and the means adjust the environment region to be detected depending on the tilt of the vehicle.
Abstract:
There is a calculation device for a radar apparatus which is configured to specify a direction of a target based on a reception signal of an antenna. A calculation unit is configured to calculate a relative displacement magnitude in a lateral direction of the target relative to a traveling direction of a moving object having the antenna mounted thereon, from data of the target position-measured by the reception signal while the moving object is moving, and evaluate a relative inclination between a reference axis of a scanning direction of the radar apparatus and a reference axis of the traveling direction of the moving object, based on the displacement magnitude.