narrow frequency modulation 中文意思是什麼

narrow frequency modulation 解釋
窄帶調頻
  • narrow : adj 1 狹 窄 狹隘的 狹小的 (opp broad wide)。2 有限的 受限制的;有偏見的 氣量小的 心眼兒窄的;眼...
  • frequency : n. 1. 屢次,頻仍,頻繁。2. (脈搏等的)次數,出現率;頻度;【物理學】頻率,周率。
  • 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...
  1. An adapting modulation scheme which behave spectral energy centralized, frequency spectrum narrow become very important

    數據傳輸中,需要頻譜能量集中,頻帶較窄的調制方式,以及解決干擾問題。
  2. The above waveforms discussed are to synthesize the wb or uwb with narrow band pulses. assuming the transmitting uwb linear frequency modulation ( chirp ), dechirp processing is introduced, and the method involved to obtain high resolution by reducing the if bandwidth is presented. furthermore, dechirp processing used to sar imaging is discussed, and the processing steps are described

    < wp = 4 >以上研究的兩種信號形式都是通過窄帶子脈沖串相參合成的方法來獲得超寬帶回波信號,本文還探討了去斜率( dechirp或stretch )方法,分析了去斜率降低接收機中頻帶寬、 fft獲得目標一維距離像的原理,並探討了線性調頻去斜率合成孔徑雷達成像,給出了具體實現步驟。
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