Research On Chaotic Frequency Hopping Synchronization Acquisition Method

In recent years, electronic warfare is one of the biggest features of modern war, and electronicwarfare has become an important means of warfare of the military war between the countries. In thefield of modern communications, electronic struggle becoming fiercer and fiercer, fixed frequencyof communication has been interfered seriously, and the security of information is threatenedseriously. In order to guarantee the communication in a relatively safe environment, so a newmethod of communication come up called chaotic frequency hopping communications. In themodern several recent wars, the importance of electronic technology gradually emerged, and theproportion of the national war is growing. Frequency hopping synchronization is the key point ofthe chaotic frequency hopping communication, so studying chaotic frequency hoppingsynchronization has an important significance.In this paper, we study and improve acquisition method of chaotic frequency hoppingsynchronization, it is divided into four parts.First, we introduced the background and significance of the chaotic frequency hoppingcommunication, research progress and development trends of, basic theory and technical indicators,as well as key technology of frequency hopping communication, including the design of frequencyhopping sequence, frequency hopping synchronization technology.Second, we described the frequency hopping synchronization method and the existed capturescheme, capture method of frequency hopping synchronization based on the frequency estimation isproposed. We explained the synchronization principle of the method to capture the process andpre-processors work process, and simulated by using MATLAB, then provided the capture timingfigure.Third, we studied the random performance of the chaotic frequency hopping boot code, andrules of testing boot code randomness and simulated, then provided the simulation results of Msequence, Gold sequence and RS sequence.Finally, we studied the existed time synchronization schemes, and proposed the timesynchronization of chaotic frequency hopping system based on multi-points sampling, alsosimulated in environment of additive white Gaussion noise, and provided the figure of normalizedmean square error of timing error.