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摘要随着通信领域的电波斗争愈演愈烈,生活环境里的电磁波越来越多，电磁波之间的干扰越来越大，惯用的定频通信受到了严重威胁。为了保证己方正常可靠的通信,一种抗干扰通信体制-跳频通信系统应运而生，它具有优良的抗干扰性能和多址组网性能,不但在军事通信中得到了广泛应用，而且与我们的日常生活密切相关，在民用移动通信中得到了广泛的应用，如GSM、HomeRF(家庭射频）、Bluetooth(蓝牙）中都应用了跳频技术。为了分析跳频通信系统的抗干扰能力，而硬件实现跳频通信比较困难，所以本课题基于Simulink仿真实现了跳频通信系统。本文主要介绍跳频技术的基本原理、组成、特点、涉及的主要技术以及一些关键技术。通过Simulink搭建了跳频通信系统的仿真模型，并主要对跳频通信系统的抗干扰性能进行分析。仿真结果表明，跳频通信的抗干扰能力非常突出。关键字：跳频；Simulink；抗干扰；AbstractAsthewavesinthefieldofcommunicationconflictintensified,theelectromagneticwaveinthelivingenvironmentmoreandmore,theinteractionofelectromagneticwaveismoreandmorebig,theconventionalfixedfrequencycommunicationhasreceivedtheseriousthreat.Inordertoguaranteetheirnormalreliablecommunication,akindofanti-jammingcommunicationsystem-frequencyhoppingcommunicationsystemarisesatthehistoricmoment,ithasgoodanti-interferenceperformanceandmultipleaccessnetworkperformance,notonlyhasbeenwidelyappliedinmilitarycommunication,andiscloselyrelatedtoourdailylife,hasbeenwidelyusedincivilmobilecommunication,suchasGSM,HomeRF(RF)family,Bluetooth(Bluetooth)intheapplicationofthefrequencyhoppingtechnique.Toanalyzetheanti-jammingcapabilityofFHcommunicationsystem,thehardwarerealizationoffrequencyhoppingcommunicationisdifficult,sothistopicisbasedonSimulinktorealizethefrequencyhoppingcommunicationsystem.Thispapermainlyintroducesthebasicprincipleoffrequencyhoppingtechnique,composition,characteristics,andsomekeytechnologiesinvolved.UsingSimulinktobuildthesimulationmodeloffrequencyhoppingcommunicationsystem,andmainlyanalyzestheanti-jammingperformanceoffrequencyhoppingcommunicationsystem.Thesimulationresultsshowthattheanti-interferenceabilityoffrequencyhoppingcommunicationisveryprominent.Keywords:frequencyhopping;Simulink;Anti-interference;桂林电子科技大学毕业设计（论文）报告用纸目录引言.........................................................................................................................................................11跳频技术的现状以及发展.............................................................................................................12跳频通信的基本原理.....................................................................................................................32.1跳频系统的原理及组成.................................................................................................................32.2跳频通信特点.................................................................................................................................52.3跳频通信的主要技术指标.............................................................................................................52.3.1调制方式.........................................................................................................................................52.3.2调频带宽.........................................................................................................................................52.3.3跳频频率数目.................................................................................................................................52.3.4跳频的处理增益.............................................................................................................................62.3.5跳频周期.........................................................................................................................................62.3.6跳频速率.........................................................................................................................................62.3.7跳频序列周期.................................................................................................................................73跳频信号的关键技术.....................................................................................................................73.1跳频频率合成技术.........................................................................................................................73.1.1跳频频率合成方法.........................................................................................................................83.1.2DDS工作原理及特点....................................................................................................................93.2跳频同步.......................................................................................................................................103.2.1跳频同步要求...............................................................................................................................103.2.2跳频同步的方法及优缺点...........................................................................................................123.3跳频序列.......................................................................................................................................133.3.1伪随机序列介绍...........................................................................................................................133.3.2跳频序列设计要求.......................................................................................................................153.3.3跳频序列的选择...............................................................................................