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Description: Studied the use of chaotic phase transitions for weak signal detection theory and simulation test (based on) the sensitivity of oscillator initial value method of weak signal detection analysis pointed out that the transition process will affect the detection performance, an improved method of weak signal detection ( on the simulation input noise generation and simulation step size selection study established a simulation model, in a typical background noise detection of weak sinusoidal signals (Experimental results show that: the proposed method has better detection performance chaotic critical state of the system to noise-sensitive lead to phase-change method difficult to accurately determine the minimum detectable amplitude (points out the limitations of such methods
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