Graphics processing unit implementation of the maximum likelihood solution to the inverse problem for retrieval of geophysical parameters from high-resolution sounder data
學年 103
學期 1
出版（發表）日期 2014-08-13
作品名稱 Graphics processing unit implementation of the maximum likelihood solution to the inverse problem for retrieval of geophysical parameters from high-resolution sounder data
作品名稱（其他語言）
著者 Wei, Shih-Chieh; Huang, Bormin; Huang, Hung-Lung Allen
單位 淡江大學資訊管理學系
出版者
著錄名稱、卷期、頁數 Journal of Applied Remote Sensing 8(1), 084799(11 pages)
摘要 The radiative transfer equation (RTE) describes the sounder observed radiance as a result of contribution from various surface properties, atmospheric temperature, and absorbing gas profiles. Retrieval of these geophysical parameters from the sounder data requires an inverse solution to the RTE problem. In the presence of noise in observation data, the maximum likelihood method is often used to find the most probable solution from an ensemble described by a probability density function. In recent years, general purpose graphics processing units with hundreds of computing cores have become more affordable for scientific computation. This work will explore the use of GPU in speedup of the maximum likelihood solution to the ill-posed retrieval problem. For the infrared atmospheric sounding interferometer high-resolution sounder having 8641 channels, the use of GPU on maximum likelihood estimation shows a promising speedup of 1986× compared to a single-threaded native CPU version.
關鍵字 graphics processing unit;maximum likelihood method;radiative transfer equation
語言 en_US
ISSN 1931-3195
期刊性質 國外
收錄於 SCI EI
產學合作
通訊作者
審稿制度 是
國別 USA
公開徵稿
出版型式 ,電子版,紙本
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