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Atmospheric sounding laser radar based on semiconductor laser

A laser radar and atmospheric detection technology, applied in the field of laser radar, can solve problems such as complex technology, expensive laser radar, and complex structure

Inactive Publication Date: 2006-09-13
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main reason is that lidar is expensive, complex in structure, and requires professional operation and maintenance to work normally, and the root cause is that lidar uses complex and expensive lasers (the laser part accounts for the entire lidar price and operation and maintenance work. a large proportion of the amount)

Method used

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  • Atmospheric sounding laser radar based on semiconductor laser
  • Atmospheric sounding laser radar based on semiconductor laser
  • Atmospheric sounding laser radar based on semiconductor laser

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Embodiment Construction

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0018] see figure 1 , the atmospheric detection lidar based on semiconductor laser among the present invention mainly comprises: semiconductor laser emitter 1, lidar receiver 2, and the signal processing circuit and industrial control computer 3 that are connected with the output of lidar receiver.

[0019] see figure 2 , the semiconductor laser transmitter 1 is composed of a semiconductor laser power supply 5, a fiber-coupled semiconductor laser 6, an aspheric lens 7 and a beam expander 8; 6 The output end of the laser is connected to the input end of the aspheric lens 7, and the output end of the aspheric lens 7 is connected to the input end of the beam expander 8. According to the required pulse width and repetition rate, figure 2 The middle I / O interface card 4 (Advantech, model PCI-1751) outputs a pulse control signal, which pulse-modulates the semi...

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Abstract

An atmospheric detection laser radar based on semiconductor laser consists of semiconductor laser emitter, laser radar receiver, signal processing circuit and computer. It can be installed on ground base station, carrier vehicle, airplane and satellite and it is featured as emitting pulse laser beam to atmosphere by said detection laser radar for generating backward scattering light signal, receiving said signal by optical receiver in radar then sending it to computer to carry out analysis for obtaining space distribution and time evolution information of micro particles in atmospheric molecules and in atmosphere.

Description

technical field [0001] The invention relates to a semiconductor laser-based laser radar for detecting the space position and time evolution of the atmosphere itself and tiny particles (including aerosol and cloud) in the atmosphere. Background technique [0002] Compared with other remote sensing technologies, lidar has unique advantages such as high detection accuracy, good temporal and spatial resolution, light weight and small size, and has great application potential in remote sensing detection of the atmosphere, ocean and land. Among the various atmospheric detection lidars, the meter scattering lidar, which is used to detect the spatial distribution and temporal variation of low-altitude atmospheric particles (including aerosols and clouds), is relatively simple and practical, and has been widely used in meteorology, Environmental protection, traffic safety, range support, atmospheric science research and many military fields. But the reality is that the demand for th...

Claims

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Application Information

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IPC IPC(8): G01S17/95G01W1/00
CPCY02A90/10
Inventor 龚威朱忠敏
Owner WUHAN UNIV
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