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The amplitude and frequency of weak signal is usually detected in strong noise. And the detection method of frequency is less to be researched. In this paper we use Rossler chaotic oscillator and proportional differential control to detect the frequency of the weak signal. At first we control Rossler system to critical state from periodic state to chaotic state. Then the unknown signal is put to the...
In this paper we use fusion technology based on Rossler chaotic oscillator and proportional differential control technology to detect the frequency of the weak signal. The dynamic character of Rossler equation is analyzed and it is immune against the white noise and the interference signal having larger frequency difference with the intrinsic frequency of chaotic oscillator. And proportional differential...
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