本文關(guān)鍵詞： 跳頻通信 同步技術(shù) Simulink TOD 同步字頭法 并行搜索　出處：《杭州電子科技大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：跳頻通信是一種擴(kuò)頻通信技術(shù)，因其具有較強(qiáng)的抗干擾能力、截獲能力和保密能力，常被應(yīng)用于軍事通信領(lǐng)域中，，隨著跳頻技術(shù)的發(fā)展，在民用移動通信領(lǐng)域中也得到了廣泛的應(yīng)用。同步技術(shù)是跳頻通信中最關(guān)鍵的技術(shù)之一，同步建立的快慢和同步系統(tǒng)的可靠性，直接影響跳頻通信系統(tǒng)的性能，在跳頻通信系統(tǒng)中要實現(xiàn)接收端與發(fā)送端的正常通信，就要求收發(fā)兩端實現(xiàn)跳頻同步。跳頻通信同步技術(shù)一方面能夠更好地保證友方間的通信，另一方面可以防止敵方的跟蹤或捕獲同步過程。因此，跳頻通信中同步技術(shù)的研究有著重要的應(yīng)用價值和意義。 論文主要研究了跳頻通信中常用的同步技術(shù)，在此基礎(chǔ)上提出了新的跳頻同步方法并進(jìn)行建模分析。主要工作如下： 1、簡要介紹了跳頻通信系統(tǒng)，具體從跳頻通信的基本原理、數(shù)學(xué)模型、技術(shù)特點、關(guān)鍵技術(shù)及同步概要等方面進(jìn)行展開。 2、對跳頻系統(tǒng)中的五種自同步法和基于TOD（Time of Day）信息的同步字頭法做了簡要介紹，提出了一種可以同時適用于慢速跳頻與快速跳頻的同步法——并行搜索TOD同步字頭法。該方法中，接收端同步系統(tǒng)包含發(fā)送端同步跳頻序列的所有可能狀態(tài)，采用并行搜索的方法直接進(jìn)入跟蹤階段，并根據(jù)跟蹤結(jié)果選擇與發(fā)送端相對應(yīng)的跳頻序列，從而打破傳統(tǒng)同步方法先捕獲后跟蹤的同步模式。理論分析表明該方法同步時間短，同步概率高且虛警概率低。 3、利用Matlab中的simulink工具分別對基于TOD信息的同步字頭法與并行搜索TOD同步字頭法進(jìn)行了模塊化仿真并詳細(xì)介紹了仿真模型中的重要模塊。通過仿真結(jié)果的分析，驗證了同步方法的可行性及有效性。 4、對本文進(jìn)行了歸納總結(jié)，指出文章的不足之處，針對下個階段的任務(wù)做了明確安排。
[Abstract]:Frequency hopping communication is a kind of spread spectrum communication technology. Because of its strong anti-jamming ability, interception ability and security ability, it is often used in the field of military communication, with the development of frequency hopping technology. Synchronization technology is one of the most important technologies in frequency-hopping communication. The speed of synchronization and the reliability of synchronization system directly affect the performance of frequency-hopping communication system. In order to realize the normal communication between the receiver and the transmitter, the frequency hopping synchronization is required in the FH communication system. On the one hand, the FH synchronization technology can better ensure the communication between the friends. On the other hand, it can prevent the enemy from tracking or capturing synchronization process. Therefore, the research of synchronization technology in frequency-hopping communication has important application value and significance. Based on the research of frequency hopping synchronization technology, a new method of frequency hopping synchronization is proposed and analyzed. The main work is as follows: 1. The frequency hopping communication system is briefly introduced, including the basic principle of frequency hopping communication, mathematical model, technical characteristics, key technology and synchronization summary. 2. The five self-synchronization methods and the synchronous prefix method based on TOD(Time of Day information are introduced briefly. In this paper, a synchronization method, which can be applied to both slow frequency hopping and fast frequency hopping, is proposed, which is a parallel searching TOD synchronous prefix method. The receiver synchronization system contains all the possible states of the synchronous frequency hopping sequence at the transmitter. The parallel search method is used to directly enter the tracking phase, and according to the tracking results, the frequency hopping sequence corresponding to the transmitter is selected. The theoretical analysis shows that the synchronization time is short, the synchronization probability is high and the false alarm probability is low. 3. Using the simulink tool in Matlab, the synchronous header method based on TOD information and the parallel search TOD synchronous header method are simulated in detail, and the simulation model is introduced in detail. To module. Through the analysis of simulation results. The feasibility and effectiveness of the synchronization method are verified. 4. This article is summarized, pointed out the shortcomings of the article, and made a clear arrangement for the next stage of the task.
【學(xué)位授予單位】：杭州電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN914.41

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