We use the principle of lock - in amplifier to amplify the weak singal and send it to A/ D conversion properly.
为将接收二极管上的微弱信号送到A／D转换器处理，采用锁定放大原理设计接收信号的调理电路。
This paper presents a topological technique for the sensitivity calculation by means of singal flow graphs theory.
本文提出用信号流图理论求灵敏度的一种拓扑方法。
On this basis, correlation analysis, singal-parameter analysis and double-parameter analysis are fulfilled. And through this, the characteristic parameters are decided.
在此基础上，对车型数据进行了相关性分析、单参数分析和双参数分析，确定了车型分类的特征参数。
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