amplitude-modulation radio 中文意思是什麼
amplitude-modulation radio
解釋
調幅無線電設備- amplitude : n. 1. 廣闊，廣大。2. 豐富，充足。3. （思想的）廣度。4. （天體出沒時偏離正東或正西的）角度距離。5. 【物，電】振幅。
- modulation : n 調整，調節；（聲調的）抑揚，變化；【音樂】轉調，變調；【無線電】調制。 amplitude modulation 振...
- radio : n. 1. 無線電訊[電報，電話]；無線電，射電。2. 無線電廣播；無線電（廣播）臺。3. 收音機。vt. ,vi. 用無線電傳送[廣播]；（向…）作無線電廣播[傳送]；用X射線拍照；用鐳醫治。
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Digital sound broadcasting is a general term covering a wide range of systems and technologies, including eureka 147 and isdb - t, which are designed to replace frequency modulation broadcasting, digital radio mondiale, a possible successor to amplitude modulation, as well as iboc, which is intended to complement the existing am and fm services
數碼聲音廣播?是一個統稱，技術上是分為不同的系統和制式，有取代fm廣播的eureka 147和isdb - t ，也有針對am廣播的drm ，和可以與am fm並存的iboc等系統，它們都有一個共通點，是現時的收音機並不適用。 -
Digital sound broadcasting is a general term covering a wide range of systems and technologies, including eureka 147 and isdb - t, which are designed to replace frequency modulation ( fm ) broadcasting, digital radio mondiale ( drm ), a possible successor to amplitude modulation ( am ), as well as iboc, which is intended to complement the existing am and fm services
數碼聲音廣播?是一個統稱，技術上是分為不同的系統和制式，有取代fm廣播的eureka147和isdb - t ，也有針對am廣播的drm ，和可以與amfm並存的iboc等系統，它們都有一個共通點，是現時的收音機並不適用。 -
Then on one hand, author makes researches of anti - jamming against pulse jamming 、 gauss white noise jamming and radio frequency noise jamming from the side of signal processing. author exercises much signal processing knowledge of time - domain sliding window accumulation 、 wavelet analysis 、 time - frequency analysis and linear prediction and carries out many simulation experiments. on the other hand, author proposes the anti - jamming methods of using a sar similar to double - base radar and modulating the amplitude 、 the phase of emission signal and changing the frequency modulation slope from the side of changing sar system model
作者首先提出了合成孔徑雷達抗干擾的定義、分類以及評價抗干擾方法好壞的主客觀標準；然後，一方面從信號處理的角度出發對脈沖式干擾、高斯白噪聲干擾以及射頻噪聲干擾進行了抗干擾研究，其中運用了時域滑動窗口積累，小波分析，時頻分析以及線性預測等信號處理知識，做了大量的模擬實驗；另一方面，本文基於改變合成孔徑雷達系統模式提出了利用類似雙基地雷達來抗干擾，以及對發射信號進行調幅、調相以及改變調頻斜率來抗干擾，同樣做了相應的模擬實驗。
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