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1、西安电子科技大学硕士学位论文高速跳频的关键技术研究与实现姓名:张宝强中请学位级别:硕士专业:电子与通信工程指导教师:杜栓义;谭文生20100415摘要跳频通信技术具有抗干扰能力强、频谱利用率高、保密性好、抗多径、抗衰落、易于组网等特点。目前跳频技术主要应用于军事通信领域,也广泛应用于民用领域,如移动通信、雷达、导航、无线局域网等。木文主要完成了基于高速跳频电台的高速跳频同步的分析、设计和实现工作。首先,详细介绍了高速跳频电台硕件平台的基本构成。其次,通过分析各种跳频序列的特点,设计了一种基于混沌算法的长跳频序列发生器。第三,分析跳频通信中同步的关键因素
2、,把同步问题转化为高速跳频通信电台的基于TOD的同步,在分析、比较有关的跳频同步技术的基础上,提出了一种适合高速跳频通信的同步方法,该同步方法采用同步字头法,使用TOD作为主要同步信息实现跳频同步,设计了跳频电台同步方案。最后,完成跳频软件的编程和调试,实现了整个跳频同步方案,给出了测试结果,并进行了同步性能分析。关键词:跳频通信,同步,跳频序列,混沌理论AbstractFrequency-Hopping(FH)isanovelspreadspectrumcommunicationtechnique,whichdevelopsveryfastinmil
3、itaryfieldduetoitsLPI/LPD(LowProbabilityofIntercept/Detection)properties,highspectralefficiencyandimmunityagainstinterferences.FHtechniqueisalsowidelyusedcivilfields,suchasmobilecommunications,radar,navigationandwirelessLANetal.Thehigh-speedfrequency-hoppingradiosystemisstudied,
4、andtheanalysis,designandimplementationofhoppingsynchronizationisgiveninthisthesis.Firstly,thehardwareplatformofhigh-speedFHradiosystemisintroducedindetail.Secondly,throughanalyzingseveralmethodstogeneratinghoppingsequence,anewschemeforhoppingsequencegenerationisdesignedw让hwidein
5、tervalofhoppingandlargesequenceperiodbasedonchaostheory.Thirdly,thekeyfactorsinhigh-speedhoppingsynchronizationareanalyzed,andthesynchronizationproblemissimplifiedintoTOD(TimeofDay)synchronization.Basedontheanalysisandcomparisonofvarioushoppingsynchronizationapproaches,anewsynch
6、ronizationmethodsuitableforhigh-speedFHcommunicationisintroduced,usingsynchronizationwordheadbasedonTODinformation,andthefrequency-hoppingimplementationschemebasedonpracticalhardwareplatformisgiven.Finally,thefrequency-hoppingsoftwareprogrammingandcorrespondingdebugareaccomplish
7、ed,andtheentirefrequency-hoppingschemeisrealized,andthetestresultsispresented・Thedissertationisclosedwithworksummaryandpointingoutthefurtherresearchdirection,suchasengineeringimplementationconsiderations.Keywords:frequency-hoppingcommunicationhoppingpatternsynchronizationhopping
8、sequencechaostheory西安电子科技大学学位论文独创性(或创新性)声明秉承学校严