有限冲击响应滤波(FIR)和快速傅里叶变换(FFT)在激发极化法中的应用  

The Application of Finite Impulse Response( FIR) Filter and Fast Fourier Transformation( FFT) in Induced Polarization Method

作　　者：薛品[1] 李志华[1] 沈茂丁[2] 徐华文[2] 

机构地区：[1]中国地质大学(武汉)自动化学院,武汉430074 [2]中国石油天然气管道工程有限公司,廊坊065000

出　　处：《科学技术与工程》2015年第29期39-45,共7页Science Technology and Engineering

基　　金：中国石油管道工程有限公司项目(20142A01)资助

摘　　要：在水文工程地质和物探找矿等领域,由于二次场电压受到多种噪声干扰,常规的硬件补偿电路或滤波电路有时无法达到精度和实时处理的要求,甚至增加系统设计的难度和成本。为了解决这些问题,提出并实现将有限冲击响应(finite impulse response,FIR)滤波和快速傅里叶变换(fast Fourier transformation,FFT)应用在需要通过测量二次场电压测明某一区域内视电阻率或视幅频率的分布式激发极化法中。通过Matlab仿真和水槽模型试验模拟和验证了FIR滤波和FFT在激发极化法中的可行性和有效性。In hydrological engineering geology and geophysical prospecting,and other fields,due to the secondary voltage interfered by a variety of noise,however regular hardware compensation circuit or filter circuit,sometimes,cannot suit the requirements of precision and real-time processing,even increase the difficulty of system design and cost. In order to solve these problems. The finite impulse response（ FIR） filter and FFT are put forward in the distributed induced polarization method when need to measure the secondary voltage to know apparent resistivity in certain area. Through Matlab simulation and sink model test,the feasibility and effectiveness of the FIR filter and FFT in induced polarization method are verified.

关 键 词：激发极化法 有限冲击响应(finite impulse response FIR)滤波 快速傅里叶变换(fast Fourier transformation FFT) 视电阻率 视幅频率 

分 类 号：TH763.1[机械工程—仪器科学与技术]