Autoliv Asp, Incorporated

Autoliv Development Ab

Tyco Electronics Amp Gmbh

Arriver Software Ab

Veoneer Sweden Ab

Walter Poiger

Xueru Ding

Dirk Klotzbuecher

Jeff Schaefer

Florian Trompeter

Hermann Henftling

Julian Schmied

Christian Rudolf Herbert Frank

Dirk Klotzbücher

Juergen Maisel

A vehicle radar system () and method including a first and second radar sensor arrangement (). Each radar sensor arrangement () includes at least two transmitter antenna devices () and at least two receiver antenna devices (), where each receiver antenna device () has a corresponding boresight extension () that is perpendicular to an antenna plane (). Each receiver antenna device () has a corresponding antenna radiation pattern () that has a lower gain () in its boresight extension () than at a certain corresponding first maximum gain azimuth angle (&#x3c6;, &#x3c6;) where there is a first maximum gain (). Each radar sensor arrangement () is mounted such that each first maximum gain () is directed along a corresponding first maximum gain extension (), such that an overlap part () of the antenna radiation patterns () is formed.

Vehicle radar system

Methods and systems for correcting leakage and/or distortion in radar systems include defining an integration time period, dividing the integration time period into a first sub-period and a second sub-period, at least partially transmitting a transmission radar signal during the first sub-period of the integration time period, not transmitting at all during the second sub-period of the integration time period, integrating the detected signal during both the first sub-period and the second sub-period, and subtracting a last sampled integrated value of the second sub-period from a last sampled integrated value of the first sub-period to generate a corrected integrated value for the integration time period.

Systems and methods for correcting for leakage and distortion in radar systems

The present invention relates to a vehicle radar system () arranged to detect objects outside a vehicle (). The radar system () a radar detector () and a processing unit (). The processing unit () is arranged to obtain values for detected target angle (&#x3b8;) and detected target Doppler velocity (v) relative the radar detector () for each detected object (') during a certain time interval. If there is a zero crossing () for a derivative () of a function () describing the progression of detected target Doppler velocity (v) as a function of detected target angle (&#x3b8;), the processing unit () is arranged to detect the zero crossing (). This zero crossing () is indicative of a radar system misalignment (&#x3b8;). The present invention also relates to a corresponding method.

Misalignment processing for a vehicle radar sensor

A radar apparatus and method for determining the range to and velocity of at least one object comprising, transmitting a plurality of RF signals, each comprising a particular frequency and being transmitted during a particular unique finite period, the plurality of signals collectively comprising at least one first subset of signals having the same frequency and at least one second subset of signals having different frequencies, receiving the plurality of signals after reflection from an object, determining a phase difference between each of the signals and the corresponding reflected signal, each piece of phase difference information herein termed a sample, organizing the samples in two-dimensions wherein, in a first dimension, all samples have the same frequency and, in a second dimension, all consecutive samples are separated from each other by a fixed time interval; processing the samples in the first dimension to determine a phase rotation frequency corresponding to the samples in the first dimension, the phase rotation frequency comprising a Doppler frequency for the at least one object, processing the samples in the second dimension to determine a second phase rotation frequency corresponding to the samples in the second dimension; the phase rotation frequency comprising Doppler frequency and range frequency for the at least one object; comparing the first phase rotation frequency to the second phase rotation frequency to distinguish range frequency from Doppler frequency of the at least one object; and converting the Doppler frequency to a velocity of the object and converting the range frequency to a range of the object.

Method and apparatus for radar signal processing

A sensor front end is disclosed that is able to discriminate objects based on their range from the sensor and to derive bearing information therefrom. The sensor system includes a signal source for transmitting at least a first and a second sensor signal toward the object and receiving a first and a second reflected signal pulse therefrom, and for generating a first and second information signal based on the first and the second reflected signals, respectively; and an information processor programmed to receive the first and second information signal from the signal source and to determine bearing information for the object based on a phase difference between the first and second information signal. The information processor is preferably capable of generating sample points from the first and second information signal and calculating the bearing information using these sample points.

Apparatus, method and articles of manufacture for velocity and bearing determination of an object

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Bad Neustadt, Germany

Walter Poiger