Satellite quantitative remote sensing method of offshore weather visibility

A visibility and satellite technology, applied in the field of satellite quantitative remote sensing, which can solve the problems of limited density of observational data and difficulty in the layout of visibility observation sites.

Inactive Publication Date: 2005-05-25
OCEAN UNIV OF CHINA +1
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Problems solved by technology

[0006] The present invention aims at the problems of difficulty in arranging visibility observation stations in coastal and large-scale sea areas and limited density of observation data, and adopts the existing meteorological remote sensing observation data NOAA/AVHRR (Advanced Very High Resolution Radiom

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  • Satellite quantitative remote sensing method of offshore weather visibility
  • Satellite quantitative remote sensing method of offshore weather visibility
  • Satellite quantitative remote sensing method of offshore weather visibility

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[0017] The present invention provides a detailed process from data collection to visibility spatial distribution and quantitative grading result output, and the specific implementation methods are as follows:

[0018] (1) Data acquisition—Use the data acquisition card (or data acquisition software) of the existing NOAA and MODIS data receiving stations to receive NOAA and MODIS satellite electrical signals when the satellites are in transit, and convert them into digital signals, and then press 1B level image data format output.

[0019] (2) Geometric correction and projection transformation—from the satellite positioning data (pixel longitude and latitude) provided in the digital signal, the pixel-by-pixel coordinate (longitude and latitude) positioning of the image data——geometric correction, and then using the general Mercator cylinder Projection converts the latitude and longitude of the image coordinates into the plane coordinate system, re-acquires the gray value of the ...

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Abstract

The present invention relates to a satellite quantitative remote sensing method of sea weather visibility. Said method includes the following steps: firstly, converting NOAA and MODIS satellite electric signals into digital signals and outputting original IB image data; making original IB image data respectively undergo the processes of geometric correction and projection conversion, sensor radiation correction, planetary reflectivity calculation and atmospheric condition identification and classification, then according to visibility actual measured data respectively adopting visibility space continuation and atmospheric parameter solving process to make visibility quantitative calculation, and displaying calculated result and outputting according to JPG image form.

Description

technical field [0001] The invention relates to a satellite quantitative remote sensing method for marine meteorological visibility in dynamic monitoring of marine environment Background technique [0002] Meteorological visibility has an important impact on aviation, navigation, land transportation and military activities. In recent years, major traffic accidents, marine disasters, air crashes and other accidents caused by excessively low visibility have occurred frequently. Therefore, it is of great significance to monitor and forecast visibility, especially low visibility. The conventional visibility monitoring method is often to conduct manual or automatic instrument observation by arranging stations on land and sea surfaces, which not only consumes a lot of manpower and material resources, but also the setting density and observation density of observation stations are difficult to meet the monitoring needs. Due to the lack of sufficient and accurate sea surface observ...

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Application Information

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IPC IPC(8): G01S13/95G01W1/00
CPCY02A90/10
Inventor 黄菲钱峻屏
Owner OCEAN UNIV OF CHINA
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