Secondly, adopts AC modulation technology to process to grating interference strips signal, so this detection system has excellent capability in anti-environmental noise and DC offset.

其次,運(yùn)用交流調(diào)制技術(shù)對(duì)衍射光柵信號(hào)進(jìn)行處理,使測(cè)量系統(tǒng)具有更高的抗環(huán)境噪聲和抗直流漂移的能力,從而適應(yīng)更為惡劣的工作環(huán)境,也為軟件細(xì)分創(chuàng)造了有利的條件。