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首页> 外国专利> METHOD FOR ELIMINATION OF CHAFF ECHOES IN REFLECTIVITY COMPOSITE FROM AN OPERATIONAL WEATHER RADAR NETWORK USING INFRARED SATELLITE DATA

METHOD FOR ELIMINATION OF CHAFF ECHOES IN REFLECTIVITY COMPOSITE FROM AN OPERATIONAL WEATHER RADAR NETWORK USING INFRARED SATELLITE DATA

机译：利用红外卫星数据从运行天气雷达网络中消除反射率复合物中果壳回波的方法

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PURPOSE: A chaff echo removal method of operational meteorological radar reflectivity composite using satellite infrared image data is provided to manage radar observation data and to offer a very accurate short term meteorological forecast. CONSTITUTION: Brightness temperature color index data of a satellite infrared image is collected in real time in a plurality of radar observation networks and a meteorological satellite(S201,S202). A radar reflectivity composite image is generated from the collected radar observation data(S203) and resolution of the radar reflectivity composite image is converted to the same as the satellite infrared image(S204). To coincide the satellite infrared image with the central coordinate of the radar reflectivity composite image, the central point is converted(S205). Only the satellite infrared image in the observation range of the radar is stored, the satellite infrared image out of the observation range of the radar is processed as a null, and the satellite infrared image is converted to coincide with the radar observation radius(S206). The value of the radar reflectivity composite image corresponding to the grid point having a smaller color index than the brightness temperature color index threshold of the satellite infrared image is removed from the radar reflectivity composite image(S209). The radar reflectivity composite image, from which a chaff echo is removed, is generated(S210). [Reference numerals] (AA) Start; (BB) End; (S201) Collecting radar observation data in real time; (S202) Collecting brightness temperature(T_B) color index data of a satellite infrared image in real time; (S203) Generating a radar reflectivity composite image; (S204) Converting the resolution of the radar reflectivity composite image; (S205) Coinciding the central lattice point of the satellite infrared image with the radar reflectivity composite image; (S206) Coinciding the satellite infrared image with the observation range of the radar reflectivity composite image; (S207) Comparing brightness temperature color index data of a satellite infrared image in the most adjacent time zone to the converted radar reflectivity composite image; (S208) T_B color index of a predetermined lattice point in the satellite infrared image T_B color index ?; (S209) Removing a lattice point with a color index value smaller than a critical brightness temperature(T_B) color index value from the radar reflectivity composite image; (S210) Generating a radar reflectivity composite image from which a chaff echo is removed
机译：目的：提供一种使用卫星红外图像数据的业务气象雷达反射率合成的谷壳回波去除方法，以管理雷达观测数据并提供非常准确的短期气象预报。组成：卫星红外图像的亮度温度色指数数据是在多个雷达观测网络和气象卫星中实时收集的（S201，S202）。根据收集的雷达观测数据生成雷达反射率合成图像（S203），并将雷达反射率合成图像的分辨率转换为与卫星红外图像相同的分辨率（S204）。为了使卫星红外图像与雷达反射率合成图像的中心坐标一致，对中心点进行转换（S205）。仅存储雷达的观察范围内的卫星红外图像，将雷达的观察范围之外的卫星红外图像作为零进行处理，并且将卫星红外图像转换为与雷达观察半径一致（S206） 。从雷达反射率合成图像中去除与具有比卫星红外图像的亮度温度颜色指标阈值小的颜色指标的网格点相对应的雷达反射率合成图像的值（S209）。产生去除了谷壳回波的雷达反射率合成图像（S210）。 [参考数字]（AA）开始; （BB）结束; （S201）实时收集雷达观测数据; （S202）实时收集卫星红外图像的亮度温度（T_B）色指数数据; （S203）生成雷达反射率合成图像; （S204）转换雷达反射率合成图像的分辨率; （S205）使卫星红外图像的中心晶格点与雷达反射率合成图像重合; （S206）使卫星红外图像与雷达反射率合成图像的观测范围重合; （S207）将最邻近时区的卫星红外图像的亮度温度色指数数据与转换后的雷达反射率合成图像进行比较; （S208）卫星红外图像中的预定晶格点的T_B颜色索引＜T_B颜色索引β; （S209）从雷达反射率合成图像中去除颜色指标值小于临界亮度温度（T_B）颜色指标值的晶格点; （S210）生成去除了谷壳回波的雷达反射率合成图像

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