一种并行交替采集系统通道失配自适应盲校准方法  

An Adaptive Blind Signal Calibration for Channel Mismatches of Parallel Sampling Systems

作　　者：潘卉青[1] 田书林[1] 叶芃[1] 

机构地区：[1]电子科技大学自动化工程学院,四川成都611731

出　　处：《计量学报》2010年第5期412-416,共5页Acta Metrologica Sinica

基　　金：国家自然科学基金（60772145,60827001）

摘　　要：通过对并行交替采集系统中通道失配误差影响的分析，提出了一种基于自适应估计的非均匀信号校准方法。该方法不需要额外增加校准信号，能在日常工作的同时自动完成误差估计，实时性高；使用变步长自适应算法，提高运算速度；无需时延滤波器，降低了系统设计难度及成本。实验结果表明，该校准算法能有效补偿通道失配误差，具有迭代次数少、运算量小、能动态跟踪误差变化的特点。An adaptive signal calibration algorithm is proposed through the analysis of the mismatches between channels. This algorithm could estimate mismatches without extra calibrating signal during ordinary processing. With variable step size LMS adaptive method, it is real-time and fast. This method also simplifies the design with no needing of extra calibration filters. Computer simulation results demonstrate it could estimate the mismatches efficiently and dynamically track the changes with less steps and computation.

关 键 词：计量学 信号校准 自适应 通道失配误差 并行交替采样 

分 类 号：TB973[一般工业技术—计量学]