在数字器件中测量两路信号相位差的方法探讨

Research on the Measurement of Phase Difference Between Two Signals in Digital Devices

文章介绍了极化散射矩阵的求解在极化信号处理中的作用,并探讨了一种基于采样信号的相位差检测方法。该方法能够在不十分依赖模数(Analog to digital,A/D)采样速度的情况下对高速信号的相位差进行精确测量,给极化散射矩阵的求解带来了很大方便。文章对该方法进行了仿真,并验证了其可行性。最后,文章提出几项措施以减小系统误差。

Firstly, this article introduces the effect on the solving of polarization scattering mamx m signal processing of polarization, and discusses a method of phase detection based on sampled signal. This method can give an accurate measurement of phase of high-speed signals under the condition of not depending on the A/ D sampling rate deeply which can bring great convenience to the solution of Polarization scattering matrix. Atso, the feasibility of the method in this article is verified, based on simulation. Lastly, the article takes several measures to reduce systematic error.