中文说明：随着科技的发展，电子设备的被应用日常生活的各个领域。在人类生存的空间中充满了形形色色的不同频率、调制方式的无线信号。在不同的领域码元速率具有不同的意义，例如民用通信中的一些无线信号的速率和调制方式都是可以预知的，然而在军事作战、电子对抗等领域却并非如此，一个良好的保密性在现代化的军事领域显得尤为重要。为了正确获取有用信息，码元速率测量是一重要步骤，倘若知道码元速率，就有助于分析码元的调制类型，进而获取通信信息。利用小波变换的特性提取信号瞬时突变信息，来分析码元速率是一种极为有效的手段。 PSK调制方式在目前的通信领域被广泛使用，现代军事对抗中获取不同制式的码元速率是截取有效信息的关键。传统的获取码元速率过程需要载波频率和相位等信息。然而小波变换非常适用于提取相位突变和瞬间变化信息。通过分析PSK信号的峰峰值可以得出码元的速率。
English Description：
With the development of technology in various fields, the electronic device is applied everyday life. Filled with all kinds of wireless signals of different frequencies, modulation of human existence in space. Have in different areas of the symbol rate different meanings, such as the rate of civilian communications in some wireless signals and modulation are predictable, but in the field of military operations, electronic warfare, etc. is not the case, a well-kept secret of the the modern military field is very important. In order to properly obtain useful information, the symbol rate is an important step in the measurement, if the known symbol rate, to help analyze the type of modulation symbols, and then acquires the communication information. Feature extraction using wavelet transform signal instantaneous mutation information to analyze the symbol rate is an extremely effective means.PSK modulation in the current field of communication