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On-board colorful three-dimensional scanning laser radar

A three-dimensional scanning and lidar technology, applied in the field of surveying, mapping and remote sensing, can solve problems such as difficulty in obtaining spectral characteristics of ground objects, and achieve the effects of enhancing color resolution, increasing stability, and improving feasibility

Active Publication Date: 2014-07-30
WUHAN UNIV
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Problems solved by technology

However, due to the limitation of a single infrared laser wavelength, it is difficult to obtain effective spectral features of ground objects. It is usually necessary to match a color imaging camera for simultaneous detection to obtain corresponding texture and color spectral information.

Method used

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  • On-board colorful three-dimensional scanning laser radar
  • On-board colorful three-dimensional scanning laser radar
  • On-board colorful three-dimensional scanning laser radar

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Embodiment Construction

[0017] According to the principle of synthesizing color by three primary colors of light, the wavelength of red, green, blue R.G.B or red, yellow, and blue R.Y.B three-color composite color laser in the visible light range is added to the existing single-wavelength lidar technology, so that the detection data has the color spectral echo intensity. and distance information. The push-broom 3D color laser scanning imaging detection is realized through the airborne platform, and the 3D space information and color laser spectral information of the airborne lidar can be directly obtained, so that the lidar can not only retain the 3D spatial resolution ability, but also have the ability to distinguish the color spectrum. . Airborne color 3D scanning lidar can generate laser scanning imaging data with color laser spectral information at one time, with higher spectral resolution and feature recognition capabilities, and comprehensively improve the accuracy of lidar feature recognition ...

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Abstract

An on-board colorful three-dimensional scanning laser radar comprises a laser emission unit, a scanning unit, a signal detection signal, a time sequence control circuit and a computer data processing unit, wherein the scanning unit comprises a motor driver, a motor, a polyhedral scanning rotating mirror and an angle encoder, and the motor driver, the motor and the polyhedral scanning rotating mirror are sequentially connected, the angle encoder is connected with the motor, and the laser emission unit comprises a laser driver, a colorful laser source, an optical emission system and a PIN detector which are sequentially connected. The signal detection signal comprises a receiving optical system, a colorful laser signal detector and a multi-channel data acquisition unit which are sequentially connected. The time sequence control circuit is respectively connected with the laser driver, the PIN detector and the multi-channel data acquisition unit. The on-board colorful three-dimensional scanning laser radar can simultaneously obtain colorful laser spectral information and laser point cloud information of a target ground feature, accordingly obtains a colorful laser imaging of a target through three-dimensional reconstruction and strengthens the colorful resolution capability.

Description

technical field [0001] The invention relates to the technical field of surveying and mapping remote sensing, in particular to an airborne color three-dimensional scanning laser radar. Background technique [0002] Airborne earth observation lidar technology is an important remote sensing method to realize large-scale three-dimensional imaging and earth detection, and has outstanding advantages in quickly obtaining three-dimensional spatial information. However, due to the limitation of a single infrared laser wavelength, it is difficult to obtain effective spectral features of ground objects. It is usually necessary to match a color imaging camera for simultaneous detection to obtain corresponding texture and color spectral information. Contents of the invention [0003] The purpose of the present invention is to provide a one-dimensional linear scanning color laser radar, which can realize color three-dimensional scanning imaging detection through an airborne platform. B...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/89
CPCG01S7/481G01S7/483G01S17/89
Inventor 宋沙磊龚威祝波史硕李德仁
Owner WUHAN UNIV
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