摘要
针对通信信号检测中FSK信号频率的快速检测问题,提出一种基于多次差分进化搜索FSK信号的快速频率检测方法。该方法将信号的幅度谱作为差分进化的初始目标函数,通过多次差分进化搜索目标函数的最大值,并更新目标函数,获得最优极值坐标向量;针对最优极值坐标向量所对应的目标函数值向量,提出定义其差分比值,来确定有效的峰状谱线位置,最终完成FSK信号的频率检测。仿真实验验证了其有效性和可行性。
In order to solve the problem of fast detection of FSK signal frequency in communication signal detection,a fast frequency detection method for FSK signal is proposed based on the multiple differential evolution search.In this method,the amplitude spectrum of the signal is taken as the initial objective function of differential evolution,whose maximum value is searched through multiple differential evolutions with the update of objective function,to obtain the optimal extreme coordinate vector.Aiming at the corresponding objective function value vector according to the optimal extreme coordinate vector,a differential ratio is defined to determine the effective position of spectral peaks,ultimately to complete the frequency detection of the FSK signal.Simulation experiments have verified the effectiveness and feasibility of the method presented in this paper.
作者
曾石磊
刘晓慧
修万顺
ZENG Shilei;LIU Xiaohui;XIU Wanshun(School of Communication and Information Engineering,Xi'an University of Posts&Telecommunications,Xi'an 710121,China)
出处
《电子工业专用设备》
2024年第4期58-62,共5页
Equipment for Electronic Products Manufacturing
关键词
差分进化
通信检测
频移键控信号
Differential Evolution
Communication detection
Frequency shift keying(FSK)signal
