An aerosol multi-optical characteristic remote sensing observation system and its observation method
A technology of optical properties and aerosols, applied in the field of atmospheric detection, can solve the problems of large errors and inability to measure the wavelength index of aerosols at the same time
Active Publication Date: 2019-08-13
PEKING UNIV
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Problems solved by technology
[0005] However, the existing instruments that use laser transmitters combined with CCD detection technology all use single-wavelength lasers to emit laser light, so they can only measure the scattering coefficient of aerosols, and cannot measure the wavelength index of aerosols at the same time. Therefore, further inversion of high-altitude aerosols When it comes to physical and chemical properties, the error is large
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[0053] The present invention will be further elaborated below through specific embodiments in conjunction with the accompanying drawings.
[0054] Such as figure 1 As shown, the aerosol multi-optical characteristics remote sensing observation system of the present embodiment includes: a laser emitting unit A, a scattering signal receiving unit B and a computer; wherein, the laser emitting unit A includes lasers of 3 different wavelengths (405nm, 532nm, 671nm) , each laser emits a continuous laser of a wavelength (405nm, 532nm, 671nm); the scattered signal receiving unit B is installed next to the laser emitting unit and at the same height as the laser emitting unit, corresponding to three different wavelength lasers , the scattering signal receiver unit includes 3 receivers, one wavelength of the laser corresponds to a receiver, each receiver includes a wide-angle lens B1, laser filters B3, B4 and B5 corresponding to the wavelength of the laser, and a CCD camera B2; The signa...
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The invention discloses a remote sensing observation system and method for multi-optical properties of aerosol. A plurality of laser devices of different wavelengths are adopted to vertically emit laser, a plurality of corresponding receivers receive scattered light signals of the wavelengths respectively, the intensity change of atmospheric scattered light signals along with scattering height isobtained, the vertical profile of the extinction coefficient of the multi-wavelength aerosol is further obtained in an iterative mode, and then the vertical profile of the wavelength exponent of the aerosol is obtained. By means of the remote sensing observation system and method, the optical properties of various types of aerosol at different heights above the ground can be obtained at the same time, the influence of a blind area on an inversion result is avoided, and observation can be conducted as long as it is cloudless; the observation system is simple and effective, the cost is low, a new technical means is provided for the vertical observation of the optical properties of the aerosol, and a support is provided for the inversion of associated instruments for the remote sensing observation of the optical properties of the aerosol.
Description
technical field [0001] The invention relates to atmospheric detection technology, in particular to a multi-wavelength aerosol multi-optical characteristic remote sensing observation system and an observation method based on CCD detection technology. Background technique [0002] Aerosols are tiny particles suspended in the air. Aerosols come from both natural (e.g. sea salt, dust, pollen) and man-made (factory vehicle emissions, burning of fossil fuels). Aerosols are often simply referred to as atmospheric particulate matter. Understanding the characteristics of aerosols in the atmosphere is important for studying the local, regional and global atmosphere. Aerosols play an important role in the Earth's radiation budget and global climate change, both as a direct effect - affecting the Earth's radiative balance, and an indirect effect - affecting the properties of clouds. The scattering effect of aerosol on the incident radiation and outgoing radiation of the earth-atmosph...
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IPC IPC(8): G01S17/95
CPCG01S17/95Y02A90/10
Inventor 赵春生边宇轩赵罡
Owner PEKING UNIV