Experimental Research On Chaotic Secure Communication System

Chaos theory is the most important discovery in physics in the 20th century,then chaotic secure communication is becoming the advanced field in modern communication technique with the further research in chaos theory.Chaotic synchronization which is the pivotal issue of chaotic communication has been the important content of the research in nonlinear complex science recently.Because of the property including non-period ,consecutive BW spectrum and noise-like, chaotic signal is apt to secure communication.In this thesis,the chaotic synchronization in chaotic circuit systems and its application to secure communication has been experimentized.The main research work of this dissertation has three parts as follows:First,by studying towards the artificially active inductances,we realize the combination of stimulated inductances and Chua's diode by adopting amplifier,modified Chua's circuit has been acquired.According to indirectly coupled Chua's circuit,we can observe high dimension hyperchaotic system's characteristic of behavior.By researching , it is approved that artificial inductances can substitute actual inductance.It provides a method for integrated Chua's circuit.Second,according to concepts of chaotic synchronization,Chua's circuit which adopts drive- respond method has been realized, The property of synchronization system has been analyzed,which is given in the experimental results.Third,this thesis recommends the chaotic synchronization theory in secure communication.Several typically designed chaotic secure communication system methods have been presented.According to PC synchronization method,chaotic masking secure communication system have been researched on.The aquired results are important for the future chaotic secure communication practice...