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A Method for Detecting Atmospheric Aerosol Parameters by Spaceborne Sensor "Polarized Crossfire"

An atmospheric aerosol and sensor technology, applied in instruments, analytical materials, etc., can solve the problems of low detection accuracy, lack of polarization detection capabilities of EarthCare satellites, and low particle size inversion accuracy, and achieves improved calibration accuracy and improved inversion. The effect of acting ability

Active Publication Date: 2016-08-24
AEROSPACE INFORMATION RES INST CAS
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Problems solved by technology

These future solutions have their strengths, but they also have their shortcomings, for example: 3MI lacks an on-board calibration system, and the detection accuracy is not high; EarthCare satellites lack polarization detection capabilities, and the inversion accuracy of parameters such as particle size is not high

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  • A Method for Detecting Atmospheric Aerosol Parameters by Spaceborne Sensor "Polarized Crossfire"
  • A Method for Detecting Atmospheric Aerosol Parameters by Spaceborne Sensor "Polarized Crossfire"
  • A Method for Detecting Atmospheric Aerosol Parameters by Spaceborne Sensor "Polarized Crossfire"

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Embodiment Construction

[0043] In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the structure and work flow of the present invention will be described in detail below with reference to the drawings and preferred embodiments.

[0044] The "polarized crossfire" scheme proposed by the present invention includes three key technical issues, and special attention is paid to the comprehensive solution of these three issues based on the same platform under the premise of my country's existing load research and development foundation and technical level, so as to achieve systematic improvement of satellite remote sensing gas. The goal of sol capacity.

[0045] (1) Simultaneous detection of multiple aerosol parameters.

[0046] The prior art 1 adopts spectroscopy and multi-angle detection methods, and has good ability to detect parameters such as total aerosol. However, due to its band configuration and lack of polarization and other...

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Abstract

The invention relates to a method for detecting atmospheric aerosol parameters by polarization crossfire of space-borne sensors. According to the method, a POLDER type sensor and an APS type sensor are combined and loaded on the same satellite platform, and by designing key parameters such as scanning modes, channel configuration and field shapes, organic and synergistic observations of the two sensors are achieved and high-precision detection of comprehensive parameters of aerosol is obtained. A design solution provided by the invention achieves the following effects (1) on basis of known detectability for aerosol parameters, detectability for aerosol layer height and absorptive aerosol index, covering the whole picture, is provided; (2) the calibration precision of polarized imaging CCD of the POLDER sensor is effectively increased by transmitting high precision on-board calibration of APS to POLDER; and (3) ground-gas decoupling problem in inversion of the aerosol comprehensive parameters is overcome by transmitting observations at near-infrared wave band (2,250 nm) to the POLDER sensor.

Description

Technical field [0001] The present invention relates to a method for polarization detection of atmospheric aerosol comprehensive parameters by a spaceborne sensor, in particular to a polarization sensor based on the French POLDER (Polarization and Directionality of the Earth's Reflectances) type polarization sensor and the American APS (Aerosol Polarimetry Sensor) type polarization sensor "Crossfire" configuration program. Background technique [0002] Aerosols are tiny particulate matter suspended in the air. They come from a variety of sources. They have an important impact on global climate change by influencing solar radiation and clouds (IPCC, 2007), and have an impact on the atmospheric environment through transmission, diffusion and precipitation. Significant influence. Among them, aerosol particles (PM2.5) smaller than 2.5 microns can be inhaled into the human lungs. They are currently the most important air pollutant in my country and have become the most important moni...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/00
Inventor 李正强许华伽丽丽陈兴峰张莹
Owner AEROSPACE INFORMATION RES INST CAS
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