Cross-correlation of several signals
Cross-correlation of several signals...
Cross-correlation of several signals...
互相關(guān)函數(shù),cross-correlation function...
cross-correlation function...
互相關(guān)函數(shù),cross-correlation function...
鎖定放大是微弱信號(hào)檢測(cè)的重要手段。基于相關(guān)檢測(cè)理論,利用開關(guān)電容的開關(guān)實(shí)現(xiàn)鎖定放大器中乘法器的功能,提出開關(guān)電容和積分器相結(jié)合以實(shí)現(xiàn)相關(guān)檢測(cè)的方法,并設(shè)計(jì)出一種鎖定放大器。該鎖定放大器將微弱信號(hào)轉(zhuǎn)化為與之相關(guān)的方波,通過后續(xù)電路得到正比于被測(cè)信號(hào)的直流電平,為后續(xù)采集處理提供方便。測(cè)量數(shù)據(jù)表明鎖定放...