dummy signal 中文意思是什麼
dummy signal
解釋
模擬信號-
The scheme of this project is : firstly, completing a automobile obverse impact dummy and preparing a special digital signal analysis system ( including sensors, a signal pretreatment, a signal collection, a digital signal process software ) ; secondly, this dummy will be used in impacting experiments to check its signals response and bio - response characteristic through comparing sensors in difference parts of the dummy that are suffered one impact ; thirdly, the bio - mechanics characteristic of the dummy will be demonstrated by nationality automobile safety testing center
該課題的設計思路為：研製汽車正面碰撞假人一個；設計專用的數字信號分析系統一套（包括傳感器、信號預處理、信號採集和數字信號處理軟體） ；將假人作簡易碰撞試驗以檢驗是否有響應信號，並對不同部位的傳感器在受到相同沖擊的情況下產生的響應信號進行對比以驗證假人的生物力學響應特性；假人的生物力學特性由國家汽車檢驗中心進行標定試驗來論證。 -
A design project based on signal channel space spectral estimation used to direct finding is proposed. in this system, it is simpler in hardware manufacture. on the other hand, some signal processing methods of space spectral estimation are used such as wavelet transform and dummy array in order to improve capability of the system doa in complex environment
為此，本文提出了基於單通道譜估計測向的方案，在硬體上簡化系統，降低設備製造難度；在軟體上利用現代信號處理技術進行研究分析，採用小波變換、虛擬陣元等方法來改進系統doa的性能。 -
A signal - generated scheme that is used in high solution ac source is presented based on the reasonable usage of system source. by discussing the methods of counter - output, pll ( phase - locked loop ) - output and dds ( direct digital synthesization ) - output, dds - based dummy - space method is brought out and it converts the time problem into space, improves the resolution of both frequency and phase - shift
通過對計數器輸出法、基於鎖相環單片機合成及基於dds （ directdigitalsynthesization ）的單片機合成幾種方法的討論，引出一種基於dds的虛擬空間法，將時間上所面臨的問題轉化到內存空間上進行處理，極大地提高了交流電源的調頻、移相精度。
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