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《Acta Armamentarii》 2006-02
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Circuit Simulation of a Nonlinear Resonator with Its Application in Weak Signal Extraction

YANG Ding-xin,HU Niao-qing,WEN Xi-sen(National University of Defense Technology,Changsha 410073,Hunan,China)  
Due to existing some shortcomings of using Duffing resonator in weak signal extraction by means of numerical method,a scheme of circuit simulating of the resonator instead of numerical method was proposed to fulfill the real time requirement.A kind of variable substitution in processing high frequency signals was suggested to improve the feasibility of the resonator in practical use.The experimental results show that the scheme is suitable for weak sinusoidal signal detecting and the extraction of weak periodic pulse trains from strong noise background using the nonlinear resonator which is better than traditional linear filtering method.
【Fund】: 国家自然科学基金资助项目(50275144)
【CateGory Index】: TP202
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