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RETRIVAL METHOD OF HIGH RESOLUTION WIND FIELDS OF MULTIPLE-DOPPLER RADAR USING BY VARIATIONAL AND FGAT METHOD
RETRIVAL METHOD OF HIGH RESOLUTION WIND FIELDS OF MULTIPLE-DOPPLER RADAR USING BY VARIATIONAL AND FGAT METHOD
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机译：基于变分和快速方法的多普勒雷达高分辨率风场反演方法
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摘要
The present invention relates to a high-resolution radar wind field calculation method using the calculus of variations and the first guess at appropriate time (FGAT) method. The high-resolution radar wind field calculation method using the calculus of variations and FGAT is able to enhance the overall reliability of a meteorological system as well as to prevent meteorological disasters in advance by obtaining three-dimensional data every minute using the calculus of variations and the FGAT and analyzing the rapidly changing meteorological state in a fast and accurate manner. The technical essentials of the high-resolution radar wind field calculation method using the calculus of variations and FGAT includes: a first step of obtaining PPI data every five minutes by observing the three-dimensional volume scan data by increasing the angle of altitude of laser beams from multiple Doppler meteorological radars within a certain range; a second step of calculating first three-dimensional wind field data every five minutes by applying the PPI data obtained in the first step; a third step of applying the first three-dimensional wind field data calculated in the second step into the calculus of variations and calculating background field data every minute using cosine; and a fourth step of calculating second three-dimensional wind field data by applying the background field data calculated in the third step and low altitude observation data measured every minute by the Doppler meteorological radars into the calculus of variations. [Reference numerals] (AA) Obtaining PPI data every five minutes by observing the three-dimensional volume scan data using a Doppler meteorological radar; (BB) Calculating three-dimensional wind field data every five minutes by applying the PPI data into the calculus of variations; (CC) Calculating three-dimensional wind field data every five minutes by applying the three-dimensional wind field data, excluding data exceeding a reference value, into the calculus of variations again; (DD) Applying the first three-dimensional wind field data into the FGAT and calculating background field data every minute using cosine; (EE) Calculating three-dimensional wind field data by applying the background field data and the low altitude observation data measured every minute by the Doppler meteorological radars into the calculus of variations
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