哈尔滨工程大学学报2016，Vol.37Issue(4)：625-628,4.DOI:10.11990/jheu.201501025
双曲调频信号的级联原子库参数估计
Estimating parameters of hyperbolic modulation frequency signal based on cascade dictionary
摘要
Abstract
To reduce the multi-path and Doppler effects occurring in underwater communications and to increase the precision of underwater target detection, we employ a modulation frequency signal as the detection signal.A hyper-bolic modulation frequency ( HFM) signal is hyperbolic in the time-frequency domain.In view of this feature, we establish a time-scale cascade dictionary model to find the optimal solution; furthermore, two frequency variation factors of the HFM signal are estimated.The simulation results and the pool trials show that the proposed algorithm performs well, and its accuracy is superior to that of the commonly used wavelet-Radon transform. The root mean square error of the frequency variation factors is 1%lower than that achieved using the wavelet Radon transform. This demonstrates the potential of the suggested algorithm for underwater target detection.关键词
水声通信系统/级联原子库/双曲调频信号/参数估计/时间-尺度原子/小波-拉东变换Key words
underwater acoustic communication/cascade dictionary/HFM modulation signal/parameter estima-tion/time-scale atomic/wavelet-Radon transform分类
通用工业技术引用本文复制引用
林聪仁,原玉婷,孙海信,齐洁,古叶..双曲调频信号的级联原子库参数估计[J].哈尔滨工程大学学报,2016,37(4):625-628,4.基金项目
国家自然科学基金项目（61471309，61107023）；国家教育部博士点基金项目（20110121120020）；福建省自然科学基金项目（2013J01258）；福建省重点基金项目（2012H1012）；福建省自然科学基金项目（2010J01344）． （）
