基于Duffing振子的微弱信号检测
Weak signal detection based on Duffing oscillator
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摘要: 针对相轨迹图是一种无明显规律的阵发混沌现象,仅从相轨迹图很难进行目测识别,因而无法直接用于工程实践的问题,在基于Duffing振子的微弱信号检测中,以Hu式不变矩作为定量指标对相轨迹图进行识别,从而快速得出一个准确的量化测度.该方法便于计算机自动识别,具有工程实践应用价值.Abstract: Aiming at the problem that it was difficult to visual test phase trajectories form as a law intermittency phenomenon,and which could not be used in engineering practice directly.The phase trajectories was identified through Hu type invariant moment as quantitative indicator in the detection of weak signal characteristics based on the Duffing oscillator.A rapid and accurate quantitative measure was obtained to facilitate the automatical recognization of computer which could be applied to engineering practice.
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