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调制方式是通信过程中的重要参数,快速检测和识别通信信号的调制方式在通信领域,尤其是军事通信领域,有着极其广泛的应用。对判决法自动检测和识别信号调制方式的经典算法进行了改进,以提高对日常通信训练中常用的USB、LSB以及FM、2FSK、4FSK信号的识别速度及准确率,并给出了该算法的实现流程。经仿真验证,改进算法能在对其他8种常用调制方式识别效果影响不大的前提下,提高对SSB、FM、FSK信号的识别效果。
The modulation method is an important parameter in the communication process. The modulation method of quickly detecting and identifying the communication signal has an extremely wide range of applications in the field of communications, especially in the field of military communications. This paper improves the classic algorithm of judging and identifying signal modulation automatically in order to improve the recognition speed and accuracy of USB, LSB, FM, 2FSK and 4FSK signals commonly used in daily communication training. Realize the process. The simulation results show that the improved algorithm can improve the recognition effect of SSB, FM and FSK signal under the premise of little effect on the recognition efficiency of the other eight kinds of commonly used modulation schemes.