基于过零点的信号分析与检测

Signal Analysis and Detection Based on Zero Crossing Signal

一个有限带宽的信号可以用实零点或复零点表示,利用过零点的信号可以实现对原信号的频谱分析,在便件实现中用过零检测器来代替A/D转换器,由A/D转换器带来的动态范围和速度限制的影响将减小。这里描述了对零点的信号分析原理和过零检测电路的实现。

A band-limited signal can be represented by the real and complex zeros of the signal. Based on a zero-based representation, a spectrum analyzation is possible, in the hardware circuit, the zero crossing detector can be instead of A/D converter, the dynamic range and speed limitation of the A/D converter are reduced. It described the signal analysis based on zero crossing and the circuit based on zero crossing detector.