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Radar Blocking Detection Method and Radar

An occlusion detection and radar technology, applied in the field of radar, can solve the problems of misjudgment and low accuracy of radar occlusion detection, and achieve the effect of not easy to misjudge, avoid economic losses and potential safety hazards, and have high accuracy.

Active Publication Date: 2021-03-30
WHST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, an embodiment of the present invention provides a radar occlusion detection method and a radar to solve the problem in the prior art that the accuracy of radar occlusion detection is low and it is easy to cause misjudgment

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  • Radar Blocking Detection Method and Radar
  • Radar Blocking Detection Method and Radar
  • Radar Blocking Detection Method and Radar

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Embodiment Construction

[0022] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0023] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

[0024] refer to figure 1 , an embodiment of the present invention provides a radar occlusion detection method, including:

[0025] Step S101: Obtain the multi-frame echo signals of the radar within the first time length, and respectively perform Fourier transform on t...

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Abstract

The invention is applied to the technical field of radars, and provides a radar shielding detection method and a radar. The radar shielding detection method comprises the following steps: obtaining multiple frames of echo signals of the radar in a first time period, and performing Fourier transformation on the multiple frames of echo signals separately, so as to obtain a spectrogram correspondingto each frame echo signal; obtaining the standard amplitude of each frequency point in a first frequency point region and the standard amplitude of each frequency point in a second frequency point region, and determining whether each frame echo signal satisfies a preset condition or not according to the standard amplitude of each frequency point and the spectrogram corresponding to each frame echosignal; and determining that the radar is shielded if the frame number of the echo signals satisfying the preset condition is greater than or equal to a frame number threshold. The radar shielding detection method determines whether the radar is shielded or not according to the spectral characteristics of the radar echo signals, which has high accuracy, is not easy to cause misjudgment, and can remind the user to clean the radar obstruction in time, thereby avoiding economic loss and safety hazard caused by the radar shielding.

Description

technical field [0001] The invention belongs to the technical field of radar, and in particular relates to a radar occlusion detection method and a radar. Background technique [0002] With the rapid development of vehicle automatic driving technology, the perception requirements for the surrounding environment of the vehicle are getting higher and higher. Millimeter-wave radar is widely used for its excellent range measurement accuracy, angle measurement accuracy, high detection distance and environmental adaptability. on the vehicle. [0003] The vehicle-mounted millimeter-wave radar detects obstacles by transmitting and receiving signals. If it is blocked, the detection capability of the millimeter-wave radar will be greatly reduced and the reliability of the millimeter-wave radar will be affected. [0004] The existing technology mostly uses the detection distance to judge whether it is blocked. When the distance of the detected obstacle in front is very small, it is de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/41
CPCG01S7/41
Inventor 焦子朋秦屹郑远陈世启江应怀
Owner WHST CO LTD
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