APPLICATION OF THE HARTLEY TRANSFORM IN THE COMPUTATION OF THE GEOID IN CHINA

作     者：NING Jinsheng[a] LI Jiancheng CHAO Dingbo 

作者机构：[a] School of Geo-science and Surveying Engineering WTUSM Wuhan China 430079 

出 版 物：《Geo-Spatial Information Science》 (地球空间信息科学学报（英文）)

年 卷 期：1998年第1卷第1期

页      面：43-49页

学科分类：0303[法学-社会学] 0709[理学-地质学] 08[工学] 0708[理学-地球物理学] 0705[理学-地理学] 081601[工学-大地测量学与测量工程] 0816[工学-测绘科学与技术] 0813[工学-建筑学] 0833[工学-城乡规划学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

主　　题：FHT FFT numerical integration 

摘      要：This paper presents a method for the computation of the Stokes for-mula using the Fast Hartley Transform（FHT）*** algorithm is mostsuitable for the computation of real sequence transform,while the Fast FourierTransform（FFT）techniques are more suitable for the computaton of complex se-quence transform.A method of spherical coordinate transformation is presented inthis *** this method the errors,which are due to the approximate term inthe convolution of Stokes formula,can be effectively *** numericaltests are *** a comparison with both FFT techniques and numerical integra-tion method,the results show that the resulting values of geoidal undulations byFHT techniques are almost the same as by FFT techniques,and the computation-al speed of FHT techniques is about two times faster than that of FFT techniques.