Hartley变换化极

本文采用一种新颖的积分变换Hartley变换,系统推导了其频率域化极方法,提出在实数空间利用Hartley变换进行磁异常化极.结合现有的低纬度化极方法,讨论了低纬度Hartley变换化极特性,实现低纬度化极.理论模型计算表明建立的Hartley变换化极方法准确、可靠,实际资料处理表明该化极方法具有实用性.

Hartley transform for reduction to the pole

As an integral transform similar to the Fourier transform, the Hartley transform is more efficient and economical than its progenitor. We attempt to use it in magnetic data processing based on the general properties of the Hartley transform. We present a practical method for reduction to the pole (RTP) in the Hartley domain. The RTP processing encounters problems in the low magnetic latitude have also been discussed, and a filtering operator modified by slightly increasing the inclination of the core field at low latitudes to suppress the north-south trending features is introduced in the algorithm. Theoretical modes are considered to clearly illustrate the effects of the reduction to the pole in the Hartley domain. Practical data processing demonstrates that RTP in the Hartley domain reduces magnetic anomalies to the pole is an effective algorithm.