On the base of briefly introducing the wavelet analysis theory and nonlinear wavelet de - noising theory by soft - thresbolding , some examples of signal recovery with white - noise heavily polluted are given in the paper 本文在簡述了小波分析及噪聲分離的非線性小波理論的基礎(chǔ)上,給出了從噪聲污染信號中恢復(fù)原信號的實例。
The injection - locking technology , characterized by the frequency stabilization , amplification , modulation and etc , has been widely used in the small - signal recovery , frequency synchronization , power synthesis , phase modulation and etc in the microwave , millimeter wave and higher frequency range communication and phased - array systems 注入鎖定技術(shù)具有穩(wěn)頻、放大、調(diào)制等特性,已被廣泛應(yīng)用于微波毫米波以及更高頻段通信和相控陣系統(tǒng)中的小信號恢復(fù)、頻率同步、功率合成、相位調(diào)制等。
The clock and data pulsation signals from upper sensor heads can be received using pin diode , then , amplified and inverted in logical control unit for the purpose of cpu operation . hereinafter , the digital signal will be delivered into the central processing unit ( cpu ) for related calculation , and meanwhile transmitted to a d / a converter for signal recovery after filter and phase - shift circuit 通過采用pin管接收從傳感頭傳遞下來的時鐘脈沖和數(shù)據(jù)脈沖信號,并將它們放大整形傳送到邏輯控制單元,產(chǎn)生邏輯控制信號,再將數(shù)字信號傳送給d / a轉(zhuǎn)換器,設(shè)計了濾波器和移相器電路,還原出了原始的被采樣信號。
It is demonstrated that the theory and the method presented here can markedly improve the output snr , and minimize phase lag as well as the distortion of the system output signal with multi - frequency . a whole framework for multi - frequency signal processing is formed , including the methods of selecting system parameters and signal recovery 對于帶噪聲的多頻模擬信號,參數(shù)調(diào)節(jié)隨機共振方法能夠提高系統(tǒng)的輸出信躁比,并減小多頻模擬信號的波形畸變和相位延遲,本文給出了系統(tǒng)參數(shù)調(diào)節(jié)方法和信號反演關(guān)系,從而形成了較為完整的模擬信號處理方法。