太赫兹科学与电子信息学报Issue(6)：942-947,6.DOI:10.11805/TKYDA201306.0942
形态学滤波与组合时频分布跳频信号参数估计
Parameter estimation of FH signals based on morphological filtering and combination of time-frequency distribution
摘要
Abstract
A parameter blind estimation method of Frequency-Hopping(FH) signals is proposed based on morphological filtering and the combination of time-frequency distribution(TFD), to solve the problems of large computation amount and the decreased time-frequency resolution. Short-Time Fourier Transform (STFT) and Wigner-Ville Distribution(WVD) are adopted to obtain the combination of TFD. Thereafter, the clear time-frequency image is obtained by morphological filtering. According to the time-frequency image, the hop duration, hop timing and hop frequency are estimated. The theoretical analysis and simulation results demonstrate that the proposed algorithm, compared with Smoothed Pseudo Wigner-Ville Distribution(SPWVD), bears less amount of calculation and higher estimation precision.关键词
跳频信号/参数估计/组合时频分布/形态学滤波Key words
Frequency-Hopping signals/parameter estimation/combination of time-frequency analysis/morphological filtering分类
信息技术与安全科学引用本文复制引用
赵方超,蒋建中,郭军利,陈正虎..形态学滤波与组合时频分布跳频信号参数估计[J].太赫兹科学与电子信息学报,2013,(6):942-947,6.基金项目
国家“863”计划资助项目(2009ZX03006-008) （2009ZX03006-008）
