振动脉冲信号分离技术的研究与仿真分析  

Research and Simulation Analysis of Vibratory Impulse Signal Separation Technology

作　　者：李丽[1] 

机构地区：[1]吉林建筑大学基础科学部,吉林长春130118

出　　处：《计算机仿真》2016年第6期158-161,共4页Computer Simulation

摘　　要：在通信信号传输优化的研究中,对脉冲信号进行准确分离能够有效抑制外部干扰的影响。在存在外在随机振动干扰源的情况下,振动信号本身会发生不可预测性的信号形变,外部随机振动带有无序性和离散性的特点,对脉冲信号造成的影响也是无序性的。当前的信号分离技术中,多是需要对信号受干扰特征有明确界定,对无序性干扰下的脉冲信号分离效果很差。提出脉冲时滞差分方程振动性的信号分离方法。对脉冲通信系统进行分析,利用脉冲时滞差分方程建立脉冲通信信号的分离模型,为脉冲通信信号的分离提供了准确的基础;利用脉冲时滞差分方程在振动性的上的等价关系,得到脉冲通信信号分离方程是振动性方程的条件,实现脉冲通信信号的准确分离。仿真结果表明,改进算法能够有效提高脉冲通信信号分离的准确性。A signal separation method based on impulsive delay difference equation vibratory is proposed. The pulse communication system is analyzed, and the impulsive delay difference equation is used to establish the separa- tion model of pulse communication signal, which provides the accurate basis for the separation of pulse communica- tion signal. The equivalence relation of impulsive delay difference equation in the oscillation is used to obtain the condition of that pulse communication signal separation equation is the vibratory equation, so as to achieve the accu- rate separation of pulse communication signal. The simulation results show that the improved algorithm can effectively increase the accuracy of the pulse communication signal separation.

关 键 词：脉冲时滞差分方程 振动性 信号分离 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]