摘要
1942年,Hartley在傅立叶变换基础上进行改进,提出Hartley变换,Hartley变换(HT)是一种实数域内的变换,比傅立叶变换(FT)至少减少一半的空间和时间。本文介绍了Hartley变换在地震波研究中的应用,包括强震数据转换、地震动模拟中的变换问题,举例说明了Hartley变换在节约计算空间和提高计算效率上的优越性。
Hartley transform（HT） based on the Fourier transform was put forward by Dr. Hartley in 1942. The Hartley transform is a real transform based on harmonic functions and has some characteristics similar to the Fourier transform. The fast Hartley transform（FHT） is twice faster and more convenient to handle than the fast Fourier transform, so it is a real valued alternative to the complex Fourier transform in many applications. This paper introduces the application of Hartley transform to earthquake engineering in detail, including transform of strong earthquake records and the simulation of earthquake ground motion. The examples given in the paper have shown the advantage and efficiency of the Hartley transform than the Fourier transform.
出处
《国际地震动态》
2008年第12期6-10,共5页
Recent Developments in World Seismology
基金
国家自然科学基金项目(50578125)资助
