beat-frequency detection 中文意思是什麼

beat-frequency detection 解釋
差拍檢波
  • beat : vt （beat; beaten 〈古語〉 beat）1 打，拍，敲，連打。2 打敗（敵人等）；勝過，超過。3 錘薄；錘平，...
  • 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。
  • detection : n. 1. 探知；發現，發覺；敗露。2. 【化學】檢定，檢查；【電訊】檢波。
  1. Based on the analysis of the beat frequency signal, the expression of the beat frequency phase is deduced. the expression indicates physics meanings of quantities to be detected and supplies theoretical bases for detection methods. by using two - dimensional fft, the range and velocity information of target is got out from the echo. according to the periodicity range ambiguity of symmetrical pulses in fmpcw, the processing method of sliding time window is used

    通過對差頻信號進行的分析，得出了差頻相位的具體表達式，表現出了要檢測的各量的物理意義，對檢測的方法提供了理論依據。利用二維fft方法，可以有效地提取回波中目標的距離與速度信息。對于fmpcw信號由於均勻脈沖產生的周期性距離模糊的問題，採取時間波門的處理方法。
  2. The method first realizes detection and classification of moving targets with different ambiguous velocities via mtd in order to simplify the spectrum of beat signal, and then eliminates moving targets " range - velocity coupling with frequency domain pairing

    該方法首先通過mtd實現對不同模糊速度目標的檢測和分類，簡化差拍信號頻譜環境，然後利用頻域配對法實現動目標的距離速度去耦。
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