Detection method, device and terminal equipment of laser radar optical path deviation
A technology of laser radar and detection method, which is applied in the field of radar, can solve problems such as the inability to accurately detect optical path deviations, and achieve the effect of accurate optical path deviations
Active Publication Date: 2020-09-04
WHST CO LTD
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[0003] In view of this, the embodiment of the present application provides a detection method, device and terminal equipment for laser radar optical path deviation, so as to solve the problem that the optical path deviation cannot be accurately detected in the prior art
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[0034] 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 application. It will be apparent, however, to one skilled in the art that the present application 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 application with unnecessary detail.
[0035] It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude one or more other features. , whole, step, operation, element, component and / or the presence or addition of a collection thereof.
[0036] It shou...
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The invention is suitable for the radar technology field and provides a method and device for detecting laser radar optical path deviation, and a terminal device and is applied to a system for detecting laser radar optical path deviation. The method comprises steps that when a light blocking plate is separated from a laser light source by a first distance and a second distance, mp first beam images and mp second beam images generated by a beam receiving device are acquired, and a first coordinate of the spot center in each of the first beam images and a second coordinate of the spot center ineach of the second beam images are calculated; spot height difference corresponding to each preset angle is calculated according to the first coordinate and the second coordinate respectively; an optical path deviation value and a spot trajectory deviation value are calculated through utilizing the spot height difference; a pitch deflection angle and a torsional deflection angle of a laser beam are calculated based on the spot trajectory deviation value; the optical path deviation value, the pitch deflection angle and the torsional deflection angle are marked as detection results. The method is advantaged in that optical path deviation can be accurately detected.
Description
technical field [0001] The present application relates to the field of radar technology, in particular to a detection method, device and terminal equipment for laser radar optical path deviation. Background technique [0002] As a high-precision intelligent sensor, laser radar has the advantages of high measurement accuracy and fast measurement speed. However, if there is a deviation in the optical path, the detector cannot effectively receive the signal. In order to effectively evaluate the impact of optical path deviation on the received signal, it is usually necessary to accurately measure the spot trajectory after the lidar is focused, and detect the optical path deviation based on the light spot trajectory. However, the accuracy of the optical path deviation detected by the current detection method is low. Contents of the invention [0003] In view of this, the embodiments of the present application provide a detection method, device, and terminal equipment for lase...
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IPC IPC(8): G01S7/497
Inventor 秦屹任玉松马慧林建东王思思
Owner WHST CO LTD