基于柔性形态学预处理的短波信号宽带检测算法  

HF Signal Detection in Wideband Based on Soft Morphology Pre-processing

作　　者：贾宏雷[1] 周慧琴 熊涛[1] 

机构地区：[1]信息工程大学信息系统工程学院,河南郑州450002

出　　处：《通信对抗》2013年第2期8-11,共4页Communication Countermeasures

摘　　要：提出一种基于柔性形态学预处理的短波信号宽带检测算法。算法基于经典的顶帽变换思想,采用柔性形态学中的开运算估计信号频谱的噪声基底,并对信号基底进行白化处理,进而选用高斯白噪声环境下的检测算法对预处理后的信号频谱图进行检测,实现短波环境下的信号宽带检测。对实际的短波宽带接收信号进行测试,结果表明算法对噪声基底的估计较为准确,克服了不平坦基底的影响,对短波信号的宽带检测概率有所提高。This paper proposes a detection algorithm for wideband received signal based on soft morphology pre-processing. It uses the open operation of soft morphology to estimate the floor of noise based on the im- proved skeleton extraction algorithm, improved hit or miss transformation to suppress noise and interference, discover the frequency hopping signal, restore the signal image, etc. Simulation results indicate that the algo- rithm can detect and restore FH signals and more effective in discovering the signal in low signal to noise ratio.

关 键 词：短波信号 预处理 宽带检测 柔性形态学 噪声基底 

分 类 号：TN911.23[电子电信—通信与信息系统]