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High sensitivity gas pollution detection laser radar system

A technology for gas pollution and laser detection, which is used in radio wave measurement systems, measurement devices, and material analysis by optical means. It can solve problems such as limited sensitivity and achieve improved monitoring sensitivity and detection distance. The effect of detection sensitivity

Pending Publication Date: 2017-07-21
NANJING INST OF ADVANCED LASER TECH
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Problems solved by technology

Domestic products of the same type are mostly concentrated in the ultraviolet band, and the sensitivity is limited. There is no mature system with high sensitivity for mid-infrared lidar.

Method used

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  • High sensitivity gas pollution detection laser radar system

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Embodiment Construction

[0018] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings;

[0019] Such as figure 1 As shown, the high-sensitivity gas pollution detection lidar system of the present invention includes an integrated mid-infrared tunable narrow-linewidth high-energy laser 1, a wavelength and power monitoring module, an optical transceiver module, an aiming module and a data processing module A mid-infrared tunable narrow-linewidth high-energy laser 1 emits a mid-infrared laser. A part of the mid-infrared laser passes through a wavelength and power monitoring module for wavelength monitoring and power monitoring, and the other part is emitted by an optical transceiver module to a detection target, and The detection target is aimed at the detection target through the aiming module, and the echo signal reflected by the mid-infrared laser from the detection target is received by the optical transceiver module, and then transmitted ...

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Abstract

The invention discloses a high sensitivity gas pollution detection laser radar system comprising an intermediate infrared tunable narrow linewidth high energy laser device, a wavelength and power monitoring module, an optical transmit-receive module, an aiming module and a data processing module that are integrated; the intermediate infrared tunable narrow linewidth high energy laser device is used for emitting intermediate infrared laser, one part of the intermediate infrared laser is subjected to wavelength monitoring and power monitoring via the wavelength and power monitoring module, the other part is emitted out to a detection object via the optical transmit-receive module, the detection object is aimed at via the aiming module, echo signals in the detection object are reflected back via the intermediate infrared laser are received via the optical transmit-receive module, then the echo signals are transmitted to the data processing module and are subjected to processing and analyzing operation, and a polluted gas concentration value is obtained. The high sensitivity gas pollution detection laser radar system can be used for conducting real time monitoring and data analyzing operation on main atmosphere pollutant concentration indexes.

Description

technical field [0001] The invention relates to a laser radar system, in particular to a high-sensitivity gas pollution detection laser radar. Background technique [0002] Lidar is an active modern optical remote sensing device that combines traditional radar technology and modern laser technology. It is the product of the extension of traditional radio or microwave radar to the optical frequency band. Lidar has a high temporal and spatial resolution and a small detection blind zone. It can detect the vertical distribution characteristics of the optical characteristics of the air pollution gas particles, which can better make up for the shortcomings of conventional detection instruments. These unique advantages of lidar make it an effective means to detect and study atmospheric pollutants. In recent decades, the research on air pollutants has developed rapidly and has become an important branch of environmental monitoring. With the development of modern lidar systems and ...

Claims

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Application Information

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IPC IPC(8): G01S17/88G01S7/481G01N21/3504G01N21/01
CPCG01N21/01G01N21/3504G01S7/4804G01S7/481G01S17/88G01N2021/0112G01N21/39
Inventor 周军杨彬卜令兵姚红权
Owner NANJING INST OF ADVANCED LASER TECH
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