基于FPGA的消噪同步叠加平均算法仿真分析及实现  

Simulation Analysis and Realization of the Synchronization Overlapping Average Algorithm for Denoising Based on FPGA

作　　者：张怀[1] 王广君[1] 曾旭明[1] 王立[2] 陈颖[2] 

机构地区：[1]中国地质大学(武汉)机械与电子信息学院,湖北武汉430074 [2]中国空间技术研究院钱学森空间技术实验室,北京100094

出　　处：《测控技术》2013年第12期13-16,共4页Measurement & Control Technology

基　　金：国家863计划资助项目(2012AA121601);湖北省重点新产品新工艺研究开发项目资助(2012BAA06007)

摘　　要：在瞬变电磁接收系统中,信号易受外部电磁噪声的干扰,信号消噪效果直接影响勘探深度和精细程度。对此,实验中采用了同步叠加平均滤波算法,首先采用Matlab与ModelSim对该算法的消噪性能进行仿真分析,最后采用FPGA实现同步叠加平均算法。实测结果表明,以FPGA纯硬件方式实现同步叠加平均算法的方案灵活性高、实时性好,能无失真恢复瞬变电磁信号,提高信噪比,满足多路瞬变电磁信号消噪的要求。The signal is susceptible to external electromagnetic noise in the transient electromagnetic receiver system.To improve the exploration depth and sophistication,noise mixed in receiving system must be removed. In the experiment,synchronization overlapping average filtering algorithm is used to eliminate noise.Firstly,the denoising performance of the algorithm is simulated with Matlab and ModelSim.At last,the synchronization overlapping average algorithm is realized with FPGA.The experimental results show that the algorithm has high flexibility,good real-time,and is lossless to restore the original transient signal,improves the signal-to-noise ratio and can meet the requirement of multi-channel transient electromagnetic signal denoising.

关 键 词：FPGA 同步叠加平均算法 消噪 仿真分析 信号处理 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]