Laser radar ranging method and device

A technology of laser radar and ranging method, which is applied in the direction of measuring device, radio wave measuring system, electromagnetic wave re-radiation, etc., can solve the problems of complex logic of modules and deviation of ranging results, and achieve saving storage space, fixed calculation time, Calculation time ephemeral effects

Active Publication Date: 2020-06-09
VISIONICS MICROELECTRONICS TECH CO LTD
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Problems solved by technology

[0005] Based on this, it is necessary to provide a laser radar ranging method and device for how to solve the problems of distance measurement result deviation and module logic complexity, which can reduce the development difficulty and system cost of the laser radar ranging system, and improve the measurement accuracy and resolution of the system and anti-interference ability, reduce the volume and weight of the system device

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  • Laser radar ranging method and device
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Embodiment Construction

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

[0031] Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same or similar parts of each embodiment can be referred to each other.

[0032] To this end, embodiments of the present invention provide a laser radar ranging method and device, which can improve the laser pulse detection capability of the laser radar without increasing the transmitted optical power, thereby improving its ranging capability and ranging accuracy.

[0033] In order to enable those skilled in the art to better understand and implement the present invention, the lidar ranging method and device according to the embodiment...

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Abstract

The invention discloses a laser radar ranging method and device. The laser radar ranging method comprises the following steps: emitting pulse laser to a measured area, and recording emission time; carrying out photon detection on a reflected echo signal, and recording and storing arrival time data of a plurality of photons; arranging the time data according to a time ascending order or descendingorder; calculating difference values of adjacent time data and accumulating the difference values, moving the time window from the first data to the last data to perform sliding calculation, comparingthe accumulated difference value with the time window, and determining that current time data is target data when the numerical value of the time data reached by the plurality of photons is subjectedto step change; and calculating distance information according to the target data, and outputting the distance information. The laser radar device is suitable for long-distance and all-weather measuring. The development difficulty and the system cost of a laser radar ranging system are reduced, the anti-interference capability of the system measuring precision is improved, and the size and the weight of the system device are reduced.

Description

technical field [0001] The invention relates to the technical field of laser ranging, in particular to a laser radar ranging method and device. Background technique [0002] Because the laser has the characteristics of good monochromaticity and strong directionality, coupled with the semiconductorization and integration of electronic circuits, laser ranging technology is widely used. Compared with photoelectric ranging, laser ranging can not only work day and night, but also improve Ranging accuracy, significantly reducing weight and power consumption, can even make it possible to measure the distance of distant targets such as artificial earth satellites and the moon. [0003] The ranging principle of lidar is to calculate the distance traveled by light according to the flight time of light, so as to determine the distance of the target object. The laser radar based on time-of-flight (TOF) distance measurement obtains the distance of the detection target by measuring the t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/10G01S7/282G01S7/292
CPCG01S17/10G01S7/282G01S7/292Y02A90/10
Inventor 陈志远俞坤治谷志勇郑阳黄晓林李成
Owner VISIONICS MICROELECTRONICS TECH CO LTD
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