摘要
本文将混合基快速傅里叶变换应用于卫星重力梯度测量数据处理。从已知位系数求重力梯度值和已知全球重力梯度值反求位系数两方面进行了数值模拟计算。数值结果表明：引入ＦＦＴ技术后，计算速度获得了极大的提高，并且随着所考虑的阶数ｎ的增加，速度提高更快。当ｎ＝５０，已比直接计算快近１０倍，ｎ＝１２０，则快３０多倍。
Complex_base fast Fourier transformation(FFT) is used in data_processing of satellite gravity gradients in this paper.Also carried out are the numerical simulation calculations of gravity gradients from potential coefficients,and of potential coefficients from global gravity gradients.The numerical results show that,with the introduction of FFT,the computational speed is greatly raised,which is raised even more greatly with the increase in the number of the degree n .When n =50,this peed increases 10 ...
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1997年第7期41-45,共5页
Journal of South China University of Technology(Natural Science Edition)
基金
国家自然科学基金
