echo beat 中文意思是什麼
echo beat
解釋
回聲心搏-
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。 -
The voice of beat hull would throw back from seabed ; determine the space between beat hull and take - over echo may measure the deepness of ocean at the location
擊拍船體的聲音會從海底反射過來，因此測定擊拍聲和接收回聲之間的進間間隔，就能測算出那一位置上的海洋深度。 -
The main research work and results can be summarized as follows : 1. analysis of echo signal of lfmcw radar, including beat signal of single - target and multi - target. 2
本文的主要工作包括:對lfmcw雷達回波信號（單目標差拍信號和多目標差拍信號）進行了分析;對lfmcw雷達模糊函數進行了分析。
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