一种互相关法测量相位噪声理论及仿真分析

相位噪声测量是无线电计测领域的重要研究内容，随着信号源等各种信号仪器设备的不断发展，相位噪声测量技术方面也产生了更高的要求。介绍了互相关法测量相位噪声的理论与仿真分析方法，通过理论推导阐释了互相关法抑制干扰噪声的原理，在推论的基础上建立了基于MATLAB的仿真分析模型，仿真验证了不同互相关次数下，系统噪声底部的改善程度，并进一步分析了双通道相关性对互相关运算结果的影响，得到了对应的仿真验证结果，为相关的工程设计提供参考。

Theory and Simulation Analysis of a Cross-correlation Method for Measuring Phase Noise

Phase noise measurement is an important research in the field of radio measurement.With the development of signal generators and other signal instruments and equipment,there are higher requirements for phase noise measurement technology.This paper introduces the theory and simulation analysis of measuring phase noise by cross-correlation method,explains the principle of suppressing uncorrelated interference noise by cross-correlation method through theoretical derivation,establishes a simulation analysis model based on MATLAB on the basis of theoretical results,and verifies the improvement degree of the bottom of system noise under different cross-correlation times,we further analyzed the influence of dual channel correlation on cross-correlation calculation results and obtained the corresponding simulation results,which provides a reference for relevant engineering design.