手持数字示波表波形插值优化设计

Wave interpolation optimization design for hand-held scopememter

在手持数字示波表中采用插值算法可以大大提高等效输入带宽,而对于手持系统,由于系统的数据存储及数据的处理能力有限,传统插值算法系统运算量很大,从而限制了它在手持仪器上的应用。本文在常用的插值方法基础上,根据手持示波器的特点,在补零插值的原理和算法基础上,提出了分级插值的优化算法,并给出了系统仿真及实现方法,仿真及实践结果表明,此算法可以大大降低运算量,且不影响插值效果,是一种实用、有效的插值算法。

Interpolation algorithm can enhance the effective bandwidth in hand-held scopememter. Due to the limitation on data storage and data processing ability for all hand-held system, conventional interpolation algorithm needs huge operation and calculation which restrained its application in hand-held devices. We present an optimized graduation interpolation algorithm on the basis of zero padding principle and also give illustrate its realization process and simulation results. Testing results show that this algorithm can reduce calculation complexity without sacrificing measuring accuracy and is a practical and effective interpolation algorithm.