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A chaotic secure communication system has been studied deeply. The synchronization method was based on nonlinear control by Logistic map. With this method, the system can always be possible to be synchronized very quickly within just a single iteration. Thus this method can be implemented into Chaotic Parameter Modulation based communication system. The deductions and simulation results was demonstrated...
Chaotic secure communication is mainly realized by chaotic mask, namely, the information signal is masked by chaotic signal with wide spectrum. Some key issues in chaotic mask have been studied in-depth. As an example, the typical master-slave chaotic synchronization system based on the modified Chua's circuit was introduced. The additive and multiplicative methods used in chaotic mask were deeply...
To overcome the drawback of a short operation range and low-resolution of a passive location system using a civil communication signal, the new idea that utilizes code division multiple access (CDMA) signal and repeater is disposed off. First, the CDMA passive location model and observation function are given, and the error source and error range are analyzed. Subsequently, the CDMA passive location...
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