摘要:
An onboard vehicle detection system for detecting roadway items of interest. The vehicle detection system includes a central controller and a detection system connectable to the vehicle and operably coupled to the central controller. The detection system outputs a detection signal. A target device is connectable to the roadway item of interest and configured to receive the detection signal from the detection system and output a unique return signal to the detection system. The detection system receives the return signal and transfers the return signal for processing to the central controller, whereby the central controller identifies the roadway item of interest and determines a responsive action.
摘要:
A radar transmitting unit Tx transmits a radio-frequency radar transmission signal from a transmission antenna which is inclined in the direction of a depression angle Æ. A radar receiving unit Rx estimates the height and speed of a vehicle which travels on a road surface using a reflected wave signal from the vehicle. A template generating unit 19 generates a variation in a phase component of the reflected wave signal corresponding to N heights and speeds of the vehicle as N templates. N vehicle height/speed template correlation calculation units #1 to #Nrep calculate correlation on the basis of any one of the N templates and a correlation value between the reflected wave signal and a transmission code of the radar transmission signal.
摘要:
The radar (100) has a reference signal generating unit (101) that generates reference signal. A receiving unit (102) receives measuring signal. A switching unit (103) switches between intermediate frequency signal and reference signal, corresponding to measuring signal. A processor unit (104) calculates correction values for correcting received signal by using reference signal. An independent claim is included for method for compensation of error occurring in receive path of filling level radar.
摘要:
A multichannel receiver system (10) comprises a first plurality of receiver circuits (12, 14), each having a first input (16, 18) connected to a corresponding one of a second plurality of input lines (20, 22), each being arranged to provide a corresponding one of a third plurality of received signals; a second input (24, 26) connected to a local oscillator (28) arranged to provide a local oscillator signal; and an output (30, 32) arranged to provide a corresponding one of a fourth plurality of output signals (34, 36); and an upconversion mixer (38) having a first mixer input (40) for receiving a reference signal (42); a second mixer input (44) connected to the local oscillator; and a mixer output (46) providing an upconverted reference signal to a fifth plurality of directional couplers (48, 50), each directional coupler connected to a corresponding one of the second plurality of input lines.
摘要:
Verfahren zur Erkennung einer Dejustage eines Radarsensors (10) eines Fahrzeugs in Elevationsrichtung, bei dem das Vorhandensein einer Dejustage in Elevationsrichtung erkannt wird auf der Basis einer von der Winkelausrichtung des Radarsensors (10) in Elevationsrichtung abhängigen Charakteristik eines von dem Radarsensor (10) empfangenen Bodenclutter-Signals. Beispielsweise wird ein Zahlenwert eines Dejustagewinkels (Δα) in Elevationsrichtung bestimmt auf der Basis einer von der Winkelausrichtung des Radarsensors (10) in Elevationsrichtung abhängigen Charakteristik eines von dem Radarsensor (10) empfangenen Bodenclutter-Signals.
摘要:
A blockage detection system and method for use in a sensor such as a side object detection (SOD) sensor in an automotive radar system is described. The sensor emits signals and receives return signals (i.e. reflected signals) from a passing object. If the passing object is within a virtual detection zone, the sensor uses the information from the passing object to determine if a blockage condition exists in the sensor. The technique utilizes statistics related to the passing object to determine whether a blockage condition exists within the sensor. In one embodiment, a SOD sensor mounted in a first vehicle uses information from a second passing vehicle (e.g. radar return information) to determine whether a blockage condition exists within the SOD sensor itself.