Since the carrier is suppressed , this phase and frequency reference is required for synchronous demodulation of the color information in the receiver 由于載波收到抑制,因此需要這個相位和頻率參考來對接收機的顏色信息進行同步解調(diào)。
The double - channel perpendicular coherent decomposing experimental device adopts the synchronous demodulation , by analyzing and processing the signals , separating useful hardness signals from multiple disturbances 本系統(tǒng)中的雙通道正交分解試驗裝置利用同步檢波技術(shù),通過對信號的分析與處理,從眾多的干擾信號中提取出待檢測的硬度信號。