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Determination of an indicator for a blindness of a radar sensor

A radar sensor and indicator technology, applied in the field of radar sensors, can solve the problems of radar sensor sensitivity decline, etc., and achieve the effect of great simplicity and robustness, simple calculation, and high precision

Active Publication Date: 2015-11-25
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, states in which the sensitivity of the radar sensor decreases are to be detected more sensitively and reliably

Method used

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  • Determination of an indicator for a blindness of a radar sensor
  • Determination of an indicator for a blindness of a radar sensor
  • Determination of an indicator for a blindness of a radar sensor

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Embodiment Construction

[0027] exist figure 1 The radar sensor shown in has a transmitter and receiver unit 10 and an associated control and evaluation device 12 . The control and evaluation device can be configured, for example, to provide information about the traffic environment to a driver assistance system 14 , for example an distance control system (ACC) in a motor vehicle. Transmitting and receiving unit 10 has at least one antenna 16 , which is fed by control and evaluation device 12 with a signal to be transmitted and which transmits the received signal to control and evaluation device 12 for evaluation. A so-called radome 18 , that is to say a protective cover, is arranged at a distance in front of the antenna 16 and is intended to protect the antenna 16 and the connected electronic components from the weather. In some cases, the function of the radome 18 is also fulfilled by a radar lens which focuses the transmitted and received radar radiation.

[0028] The control and evaluation devic...

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Abstract

A method for determining an indicator for a blindness of a radar sensor, includes: controlling the radar sensor to transmit a transmission signal in the form of at least two successive frequency ramps having the same ramp slope and in the same frequency range, and to receive detection signals associated with the frequency ramps; examining, for multiple frequencies, whether a ratio between the received powers in the frequency spectra of the received signals, at a respective frequency, corresponds to a ratio between the transmission powers of the associated frequency ramps; and determining an indicator for a blindness of the radar sensor based on the result of the examinations.

Description

technical field [0001] The invention relates to a method for determining an indicator of blindness for a radar sensor and a radar sensor with a control and evaluation device which is provided for carrying out a method for determining blindness for a radar sensor indicator method. Background technique [0002] Document DE 19945268 A1 describes a method and a device for detecting contamination and / or blindness of a sensor on the basis of at least two indicators formed from signals received and / or sent by the sensor. The following are proposed as indicators: the average angular quality of all objects detected by the system, the ratio of detection failures to selected target objects for the longitudinal adjustment of the vehicle, the average power of the signal received by the sensor, the ratio of all objects detected by the system during the measurement period The sum, correlation of the distance and magnitude of the most distantly detected object, and road reflections detecte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/40G01S13/93G01S13/931
CPCG01S7/4004G01S13/931G01S7/4039G01S7/4082G01S7/4056G01S13/343G01S13/345
Inventor M·沙博G·屈恩勒
Owner ROBERT BOSCH GMBH