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Laser radar ranging method and device

A technology of laser radar and ranging method, which is applied in the direction of measuring devices, radio wave measuring systems, climate sustainability, etc., can solve the problems of complex module logic and deviation of ranging results, and achieve saving storage space, less data volume, The effect of meeting the needs of multi-target detection

Active Publication Date: 2022-05-17
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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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 includes: emitting pulsed laser light to the measured area and recording the emission time; performing photon detection on the reflected echo signal, and recording and storing multiple Arrange the time data in ascending or descending order according to the time; calculate the difference between adjacent time data and accumulate the difference, the time window moves from the first data to the last data for sliding calculation, Comparing the cumulative difference with the time window, when the value of the arrival time data of multiple photons changes stepwise, the current time data is the target data; 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 measurement. The invention reduces the development difficulty and system cost of the laser radar ranging system, improves the measurement accuracy and anti-interference ability of the system, and reduces the volume and weight of the system device.

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 Patents(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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