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Method and device for ascertaining and compensating for a misalignment angle of a radar sensor of a vehicle

A radar sensor, misalignment angle technology, applied in the direction of instruments, utilization of re-radiation, reflection/re-radiation of radio waves, etc., can solve problems such as disadvantage

Active Publication Date: 2014-11-19
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This is disadvantageous for comfort reasons

Method used

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  • Method and device for ascertaining and compensating for a misalignment angle of a radar sensor of a vehicle
  • Method and device for ascertaining and compensating for a misalignment angle of a radar sensor of a vehicle
  • Method and device for ascertaining and compensating for a misalignment angle of a radar sensor of a vehicle

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Embodiment Construction

[0031] figure 1 A flow chart illustrating the method according to the first embodiment of the invention is shown. Here, refer to figure 2 reference mark.

[0032]In a first step S01 , first data are generated which contain information about the measured orientation of radar sensor 2 relative to the current movement of vehicle 1 . In the desired state, the radiation direction 45 of the main lobe of the antenna characteristic of the radar sensor 2 lies in the same direction as the vehicle longitudinal axis 35 of the vehicle 1 with respect to its horizontal orientation. In other words, in the desired state, the horizontal component of emission direction 45 lies precisely in the direction of travel in which vehicle 1 is traveling straight through. In practical situations, emission direction 45 may deviate from vehicle longitudinal axis 35 . The difference between the desired state and the actual state is described by the misalignment angle 20 . In the simple case—by means of...

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Abstract

A method for ascertaining and compensating for a misalignment angle of a radar sensor of a vehicle, includes generating a first set of data which contains information about a measured alignment of the radar sensor with respect to an instantaneous movement of the vehicle; generating a second set of data which contains information about a measured alignment of the reference axes defined at the vehicle with respect to the instantaneous movement of the vehicle; ascertaining a misalignment angle by comparing the generated first set of data to the generated second set of data; compensating for the ascertained misalignment angle by changing an emission direction of the main lobe of the antenna characteristic as a function of the ascertained misalignment angle.

Description

technical field [0001] The invention relates to a method and a device for ascertaining and compensating a misalignment angle of a radar sensor of a vehicle. Background technique [0002] Driver assistance systems are electronic add-ons in motor vehicles for assisting the driver in certain driving situations. In general, safety aspects are important here, but also increased driving comfort and improved driving economy. Driver assistance systems intervene semi-autonomously or autonomously in the drive, control (eg accelerator, brake) or signaling devices of the vehicle or warn the driver shortly before or during a critical situation via a suitable man-machine interface. [0003] Examples of known driver assistance systems include anti-lock braking systems (ABS), electronic stability programs (ESP), automatic emergency braking (ANB) and the like. Many driver assistance systems use radar sensors for surroundings monitoring and distance measurement. The orientation and alignme...

Claims

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Application Information

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IPC IPC(8): G01S7/40G01S13/93G01S13/931
CPCG01S7/4004G01B21/24G01S7/4026G01S13/931G01S7/4034G01S7/403G01S2013/93271
Inventor D·施泰因布赫R·施纳贝尔
Owner ROBERT BOSCH GMBH
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