The Application of Du-ng Oscillator in Weak Signal Detection

Abstract

In this paper, a method for identifying the chaotic state of du‐ng oscillator is proposed where the dufiing oscillator is used for weak signal detection. This method is based on frequency spectrum analysis and flltering. Some relative aspects of this method for practical using are studied in details too. The proposed method has three properties; reasonable calculation complexity, robustness to moderate noise amount, and capability of detection with short signal sequence. The proposed approach has good robustness, which is successfully shown in this paper.