【摘要】 研究了一种带摄动的Duffing振子混沌数学模型,详细的分析了其间歇混沌特性。根据Duffing振子对噪声的免疫力,提出了一种新型的频率测量方法,并给出了具体的算法。仿真结果表明,在强噪声背景下,该方法可以准确的测出微弱正弦信号的频率。更多还原

【Abstract】 A typical intermittent chaotic model—the Duffing oscillator is researched and its character of intermittent chaos is also studied.A new method about frequency measurement is presented.Based on the immunity of Duffing oscillator to noise,an algorithm is given.The result of simulation experiment indicates that the method can be used to measuring frequency of weak sine signal under strong noise background accurately.更多还原