寬帶數(shù)字陣波形產(chǎn)生器的研究與實現(xiàn).pdf

1、電子科技大學碩士學位論文寬帶數(shù)字陣波形產(chǎn)生器的研究與實現(xiàn)姓名：鐘文申請學位級別：碩士專業(yè)：信號與信息處理指導教師：呂幼新20090501ABSTRACTWiththedevelopmentofmodemelectromagneticcountermeasuretechnology，themodemradarisinconditionof刪ereelectromagneticcountermeasureInthisconditionmod

2、ernradarshouldadvancethecapabilityofhighaccuracy，multifunctionalandantijammingAmethodofadvancethecapabilityisusethetechnologyofarrayradarandtransmitwidebandradarsignaloflinearfrequencymodulation(LFM)Withthedevelopmentofm

3、oderndigitaltechnologyandVLSI，themethodofdigitalwaveformsynthesisofthepulsecompressionsignalsisnowwidelyusedinradarsystemsThewaveformgeneratedusingdi百talsyStemsisofstrictcoherenoe，repetitiveness，highstabilityandprogramma

4、bilitywhichcanalsoeasilyrealizethewaveformparameteragilityandgeneratearbitrarywaveformsinordertomeettheurgentneedsforanti—interferenceandstrongviabilitiesofradarsundermodernEWenvironmentInthisdissertationgeneralanalysist

5、hesystemofDirectDigitalSynthesizer(DDS)onthebasisofradartheoryandpulsecompressiontheoryAdigitalwaveformgeneratorforaradarsysytonlhasbeenimplementedwhichcangeneratedualresolutionpulsecompressionsignalswith200MHz／25MHzband

6、widthworkingat1200MHzcarrierBytested，thesystemrunsteadiedandgeneratehi曲一qualitywaveformwhichcandelayedwitllpsprecisionandphaseadjustedTheprimaryworkinthisdissertation：(1)BaseonthetheoryofwidebanddigitalarrayradarandDirec

7、tDigitalSynthesis，analyzedtheinfluenceofthedelyederrorandphaseerrorofradarsignal(2)DDSsystemispresented，andthetheoreticalanalysisandpracticalimplementationofthesystemisdiscussedindetails(3)widebanddigitalarrayradar(WDAR)

8、generatorsystembasedonAD9858isdesignedandtestedThetestresultsindicatethatmeetsystemrequestsThisdissertationgivesafullanalysisoftheLFMsignalsgenerationbased011DDStechnologyandsomeconclusionsarealsopresentedKeywords：Wideba