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描述了间歇混沌检测原理,结合差分原理构成双Duffing振子差分系统对弱信号频率进行检测,提出了该方法对复频信号的检测具有全新的意义,给出了方法的具体步骤和流程图,在对复频信号进行检测的同时对单频信号也进行了仿真。结果显示,与传统的Duffing振子阵列方法进行比较,该方法不仅减少了阵列数,且在不影响检测精度的前提下提高了频率检测带宽,大大减少了计算量。
The principle of intermittent chaos detection is described. The double-Duffing oscillator differential system is combined with the differential principle to detect the weak signal frequency. It is proposed that this method has a completely new meaning for the detection of complex frequency signals. The specific steps and flow charts of the method are given. The complex frequency signal is detected at the same time on the single-frequency signal is also simulated. The results show that compared with the traditional Duffing oscillator array method, this method not only reduces the number of arrays, but also improves the frequency detection bandwidth without affecting the detection accuracy and greatly reduces the computational cost.