突发脉冲MSK信号的数字化解调研究与仿真

Investigation and Simulation of Digital Demodulater for MSK Signal

最小频移键控（MSK）具有频谱效率高和相位连续的特点，较多地运用在移动通信和军事区域导航信息传送中。数字化解调充分利用数字处理技术，克服了模拟信号调制解调硬件设计复杂和不易修改等缺点。本文对MSK信号特性进行了分析，然后对采样后的信号进行相干和非相干数字化解调与处理研究，并进行仿真和结果分析。

Minimum shift keying has high efficiency of spectrum and continuous phase, seen wide usage in mobile communications and military area navigation. Digital demodulation fully utilizes the digital signal processing technology, overcomes the disadvantages aroused by the analog signal demodulation, which has the problems of hardware complexity and not easy for modification. This paper analyses characteristic of MSK signal, then investigate demodulating using coherent demodulation and non-coherent demodulation and processing for signal after sampling, then simulating and analysis of result.