基于通用仪器和星座图的MPSK识别方法

Recognition Method for MPSK Signals Based on General Instruments and Constellation

本文提出了一种基于通用仪器和星座图的MPSK信号识别方法。首先利用信号/频谱分析仪AV4051E对采集的MPSK信号下变频、放大,并输出到数字示波器DSOS404A中进行AD采样;然后进行载频和带宽估计、数字下变频、码速率估计以及星座图恢复等处理;最后依据恢复的基带信号星座图进行调制信号识别。实验结果表明,该方法具有较强的工程实践性。

A recognition method for MPSK signals based on general instruments and constellation was proposed.Firstly,the acquired MPSK signals was down converted and amplified by signal/spectrum analyzer AV4051 E,and then IF signals was sampled by DSOS404 A.Secondly,carrier frequency and bandwidth of signals was estimated,and then digital down conversion,symbol rate estimation,constellation recovery process were used.Finally,modulation was recognized by recovered constellation of baseband signals.The experiment results demonstrate that the proposed method has strong engineering practicality.