Weak signal detection based on Duffing oscillator
HU Zhi-hong · Journal of Zhengzhou University of Light Industry · 2012
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.