摘要
针对基于异步双存储技术的大时延模拟源精度难以提升的问题,提出了一种实时校正方法。自校正充分利用异步双存储的粗细两级存储延时模式,在细延时阶段完成时延闭环测量,在粗延时阶段完成时延修正。自校正通过模拟源系统内部闲余的数字资源实现,以低消耗、低成本,同时不影响模拟源正常工作,实现了高精度时延模拟。深入研究了异步双存储延时技术,提出了自校正原理,介绍了自校正的具体实现方法,通过比对实验验证了自校正技术对于精度的提升切实可行。
Aiming at the problem that accuracy of the big-delayer based on asynchronous double-memorytechnologyis hard to be advanced. This paper proposes a real-time self-correcting method. Self-correcting makes full use of the rough-fine two stage delay of asynchronous double-memory to make the closed-loop measurement in fine stage, and correct in rough stage. Self-correcting was realized with the digital resource not in use of Big-delayer, which realized high accuracy delay with low consumption and low costing without disturbing the delayer when it working. A principle of self-correcting was proposed on deeply researching asynchronous double-memory technology, and the method of how to implement self-cor- recting was introduced, contrast test was conducted to prove that the real-time self-correcting technology can really advance the accuracy.
出处
《国外电子测量技术》
2015年第12期73-76,共4页
Foreign Electronic Measurement Technology
关键词
异步双存储
大时延模拟源
自校正
高精度
asynchronous double-memory
big-delayer
self-correcting
high accuracy
