基于形态学处理的短波跳频信号宽带时频检测算法  

Wideband Time-Frequency Detection Algorithm of Short-Wave Frequency Hopping Signals Based on Morphology Processing

作　　者：贾宏雷[1] 江桦[1] 

机构地区：[1]信息工程大学,河南郑州450001

出　　处：《信息工程大学学报》2013年第2期173-179,共7页Journal of Information Engineering University

摘　　要：通过分析短波跳频信号的宽带时频特性,文章提出一种基于形态学处理的检测算法。算法分别利用形态学基本算法、改进的骨架化算法、改进的击中/击不中变换实现跳频检测过程中噪声和干扰信号的消除、跳频信号存在性的判定、跳频图像的还原等操作。仿真结果表明,算法在较低信噪比的情况下仍能较好地确定短波跳频信号的存在性,实现信号的检测与还原。With the analysis of wideband time-frequency characteristic of short-wave frequency hopping signals, this paper proposes a detection algorithm based on morphology processing. It respectively employs basic morphology, improved skeleton extraction algorithm, and improved hit or miss transformation to suppress noise and interference, discover the frequency hopping signal, and restore the signal image, etc. Simulation results indicate that the algorithm can detect and restore frequency hopping signals and more effectively discover signals with low signal-to-noise ratio.

关 键 词：短波跳频信号 时频特性 形态学 骨架化算法 击中 击不中变换 

分 类 号：TN911.23[电子电信—通信与信息系统]