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电子学报  2013 

基于Duffing振子大周期态相轨迹的频率测量方法

DOI: 10.3969/j.issn.0372-2112.2013.10.022, PP. 2010-2015

Keywords: Duffing,相轨迹,频率,测量

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Abstract:

对Duffing振子大周期态相轨迹特性进行了研究,提出了一种利用Duffing振子大周期相轨迹运动实现频率测量的方法.仿真结果表明,该方法的检测信噪比下限要高于现有的基于强参考模式的检测方法,但该方法不存在检测盲区问题,在单振子频率覆盖方面也有了大幅提高,极大降低了检测系统的设计难度,而且单振子即可实现对chirp信号的检测,拓展了Duffing振子检测技术的应用.

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