摘要:
A radar system includes a radar transceiver for generating transmit signals and for receiving signals reflected by targets. The radar system includes a mixer for combining the transmit signals and the reflected signals into a mixer signal. A radar signal processor includes a sampling device, connected to the mixer, for sampling the mixer signal and for generating a sampled mixer signal. A spectrum estimation device, connected to the sampling device, generates a range profile signal including a plurality of range bins each containing a magnitude of a spectral component. A threshold device, connected to the spectrum estimation device, generates a target space array from the range profile signal. A target decision device, connected to the threshold device, generates estimated range and speed signals for a closest target from the target space array.
摘要:
A vehicle obstruction detection system (15) for discriminating between hazardous and non-hazardous obstructions (13) within a predetermined zone uses a pair of frequency modulated continuous wave radar cycles (FM-CW) and a single continuous wave radar cycle (CW) in the generation of radar quantities for measuring obstruction range and apparent obstruction velocity. Measured quantities from the FM-CW and CW cycles are compared with predetermined quantities for discriminating between hazardous and non-hazardous obstructions (13).
摘要:
Beschrieben wird ein Außenspiegel für ein Kraftfahrzeug mit einem Spiegelgehäuse (1), in welchem ein Ruckspiegel (12) gehalten und mittels eines Fußes (13) am Fahrzeug befestig-bar ist. Um dem Fahrer von hinten herannahende Fahrzeuge rechtzeitg vor Fahrbahnwechsel zu signalisieren, ohne daß seine Aufmerksamkeit von dem Verkehrsgeschehen vor seinem Fahrzeug abgelenkt wird, ist vorgesehen, daß am Spiegelgehäuse ein Sendeempfänger (3) für elektromagnetische Strahlung bestimmter Frequenz, dessen Antenne gegen Fahrtrichtung des Kraftfahrzeugs gerichtet ist, befestigt ist, welchem eine Auswerteschaltung mit optischer und/oder akkustischer Anzeigevorrichtung (5) nachgeschaltet ist.
摘要:
Il comporte des moyens d'émission d'un faisceau (11, 12) d'ondes disposé dans la zone angulaire (23, 24), les ondes se réfléchissant sur des obstacles situées dans la zone angulaire, des moyens de réception, de sélection des ondes réfléchies, des moyens d'émission de signaux sonores et/ou lumineux, actifs lorsque les ondes sont réfléchies par un obstacle situé dans le secteur (25, 26) d'intersection de la zone angulaire (23, 24) et de la bande latérale (13, 14), et des moyens de commande des moyens d'émission, actifs lorsque le levier commandant le circuit électrique des feux clignotants est actionné. Application aux véhiclues automobiles notamment.
摘要:
A monitoring device configured to monitor conditions to either side behind a vehicle includes a radar configured to perform detection in a first detection area for detecting a traveling object to either side behind the vehicle and in a second area having a width in a vehicle width direction narrower than a width of the first detection area, a detector configured to detect a traveling state of the vehicle, and a controller configured to control the radar, wherein, in a case that the traveling direction included in the traveling state is straight forward, the controller is configured to switch a detection area between the first detection area and the second detection area in accordance with the traveling state not including a traveling direction.
摘要:
A radar system includes a transmit antenna for transmitting a first RF signal, a receive antenna for receiving a second RF signal, and a receiver circuit coupled to the receive antenna for processing the second RF signal and comprising a video amplifier having a temperature compensating attenuator. A radar receiver includes an RF amplifier, a down-converter and a video amplifier comprising a temperature compensating attenuator. The RF amplifier has an input terminal adapted to receive an RF signal and an output terminal at which an amplified RF signal is provided. The down-converter has an input terminal coupled to the output terminal of the RF amplifier and an output terminal at which a lower frequency signal is provided. The video amplifier has an input terminal coupled to the output terminal of the down-converter and an output terminal at which a filtered signal is provided.
摘要:
A procedure for calibrating a vehicle onboard sensor 202 by facilitating the placement of a calibration fixture 110 on a floor relative to a stationary vehicle 100 using a laser emitter 102 secured to a front steerable wheel 104 of the vehicle on the same lateral side as the vehicle onboard sensor. A beam projection axis X of the laser projector is aligned at a known orientation relative to a geometric characteristic of the vehicle 100, such that the beam projection axis X is directed over a placement location P of the calibration fixture on the floor, either inherently or by guided steering of the supporting steerable wheel. A distance between the calibration fixture 110 and a reference point associated with the vehicle 100 is measured, and a current position of the calibration fixture on the floor along the beam projection axis X is adjusted as required to position the calibration fixture for calibration of the vehicle sensor 202 at a selected distance from the reference point along the beam projection axis X,
摘要:
A monitoring-target-region setting device includes an object detector that detects objects present around an own vehicle, a scene discriminator that discriminates on the basis of position information of the own vehicle and map information around the own vehicle whether the own vehicle is located near a place where an assumed blind spot region is present, a monitoring region setter that sets, when the scene discriminator discriminates that the own vehicle is located near the place, while the own vehicle passes near the place, a region including at least the assumed blind spot region when viewed from the own vehicle as a monitoring region where alarm is performed when objects are detected, and an object selector that selects, in the monitoring region, according to whether the detected objects satisfy the determined condition, whether the detected objects are set as a target for which alarm is performed.
摘要:
The present disclosure relates to a vehicle radar system (3) arranged to be mounted in a host vehicle (1) arranged to run in a forward running direction (D). The vehicle radar system (3) comprises at least one transceiver arrangement (7) arranged to generate and transmit radar signals (4), and to receive reflected radar signals (5), where the transmitted radar signals (4) have been reflected by one or more objects (6, 12). The radar system (3) is arranged to provide range (r n ), azimuth angle (θ n ) and radial velocity (v rn ) for a plurality of measurement points (9, 9') at said objects (6, 12). The radar system (3) is furthermore arranged to divide a total detection volume (8) into at least two partial volumes (8a, 8b, 8c, 8d), and to perform a velocity estimation for each partial volume (8a, 8b, 8c, 8d) such that a total velocity distribution (14) is acquired along a side extension (E) that is perpendicular to an extension along the forward running direction (D).