标签: chirp

多带多Chirp基通信信号与检测研究

基于Chirp信号的中程水声通信系统关键技术研究与实现

Foreverytimedomainwaveformthereisacorrespondingfrequencydomainwaveform,andviceversa.Forexample,arectangularpulseinthetimedomaincoincideswithasincfunction[i.e.,sin(x)/x]inthefrequencydomain.Dualityprovidesthatthereverseisalsotrue;arectangularpulseinthefrequencydomainmatchesasincfunctioninthetimedomain.WaveformsthatcorrespondtoeachotherinthismannerarecalledFouriertransformpairs.Severalcommonpairsarepresentedinthischapter.CHAPTERFourierTransformPairs11Foreverytimedomainwaveformthereisacorrespondingfrequencydomainwaveform,andviceversa.Forexample,arectangularpulseinthetimedomaincoincideswithasincfunction[i.e.,sin(x)/x]inthefrequencydomain.Dualityprovidesthatthereverseisalsotrue;arectangularpulseinthefrequencydomainmatchesasincfunctioninthetimedomain.WaveformsthatcorrespondtoeachotherinthismannerarecalledFouriertransformpairs.Severalcommonpairsarepresentedinthischapter.DeltaFunctionPairsFordiscretesignals,thedeltafunctionisasimplewaveform,andhasanequallysimpleFouriertransformpair.Figure11-1ashowsadeltafunctionin……