principle of optical dpsk modulation format 光差分相移键控调制格式原理
communication signals travel in space with different modulation formats 空间传播的通信信号采用了不同的调制方式。
the radio surveillance digital system can identify the modulation format and parameters by data acquisition and signal processing in the complicated signal environments with noise 无线电监测调制识别系统能够在复杂环境和噪声干扰情况下对信号采集和处理确定信号各种参数,解调信号,从中获取信息。
modulation format is one of the most important characteristics used to distinguish communication signals . knowing the modulation format and modulation parameters of a communication signal is the first step of correct demodulation 调制方式是区分不同性质通信信号的一个重要特征,而要截获通信信号的信息内容,必须知道信号的调制方式和调制参数。
modulation format is one of the most important characteristics used to distinguish communication signals . knowing the modulation format and modulation parameters of a communication signal is the first step of correct demodulation 调制方式是区分不同性质通信信号的一个重要特征,而要截获通信信号的信息内容,必须知道信号的调制方式和调制参数。