随机跳频信号的模糊函数与时频分析

计算机工程与应用 ›› 2008, Vol. 44 ›› Issue (18): 121-123.

随机跳频信号的模糊函数与时频分析

郭建涛^1,2

1.华中科技大学电子与信息工程系，武汉 430074
2.信阳师范学院物理电子工程学院，河南信阳 464000

收稿日期:2007-09-25 修回日期:2007-12-12 出版日期:2008-06-21 发布日期:2008-06-21
通讯作者: 郭建涛

Ambiguity function of random frequency-hopping signals and its time-frequency analysis

GUO Jian-tao^1,2

1.Department of Electronics and Information Engineering，Huazhong University of Science and Technology，Wuhan 430074，China
2.College of Physics and Electronic Engineering，Xinyang Normal University，Xinyang，Henan 464000，China

Received:2007-09-25 Revised:2007-12-12 Online:2008-06-21 Published:2008-06-21
Contact: GUO Jian-tao

摘要/Abstract

摘要： 在分析随机跳频信号模糊函数及其特性的基础上，给出了用于时频分析的矩形核函数与信号模糊平面的关系，提出了一种新的时频表示方法。理论推导和仿真结果表明该方法能够有效地分析随时间快速跳变的跳频信号。与平滑伪维格纳分布相比，在保持相似性能的情况下，该算法运算量比较小，可以有效地节约运算时间，适合于快速跳频信号的实时分析。

Abstract: Based on the analysis of ambiguity function and its characters about random frequency-hopping signal，the relation of rectangular kernel function which can be used in time-frequency analysis and signal ambiguity function is given，and a new time-frequency representation method is proposed.Theoretical deduction and simulation results show that it is effective to analyze fast frequency-hopping signal using this method.Compared with Smoothed Pseudo Wigner-Ville Distribution（SPWVD），this algorithm can reduce the cost of computation，save operation time under the situation that keep approximate performance and is suitable for real-time analyzing.

郭建涛^1,2. 随机跳频信号的模糊函数与时频分析[J]. 计算机工程与应用, 2008, 44(18): 121-123.

GUO Jian-tao^1,2. Ambiguity function of random frequency-hopping signals and its time-frequency analysis[J]. Computer Engineering and Applications, 2008, 44(18): 121-123.