电讯技术Issue(8)：1071-1076,6.DOI:10.3969/j.issn.1001-893x.2014.08.006
结合图像处理与时频分析的直扩/跳频信号参数估计
Parameters Estimation of DS/FH Signal Based on Image Processing and Time-frequency Analysis
摘要
Abstract
The spread spectrum bandwidth of DS/FH ( Direct Sequence/Frequency Hopping ) signal to be estimated is greater than that of the FH interval,meanwhile,the energy of jamming signal and noise signal is greater than that of DS/FH signal. In order to estimate the parameters of DS/FH signal accurately, a no-vel method is presented. The method combines the image processing algorithm and the time-frequency a-nalysis technology. First, it gets the time-frequency distribution of the DS/FH signal with time-frequency analysis;second, it removes the isolated points and the “hole” point with the closing operation and open operation of image processing algorithm. In particular, an iterative correlation matching algorithm is pres-ented to restrain the burr interference. Finally, the parameter estimation is realized by analyzing the image pixel locations and time-frequency parameters. Simulation results show that the method can effectively e-liminate the influence of interference signals and estimate the time-frequency parameters of hybrid spread spectrum signal quickly and accurately.关键词
DS/FH信号/参数估计/图像处理/时频分析Key words
DS/FH signal/parameter estimation/image processing/time-frequency analysis分类
信息技术与安全科学引用本文复制引用
席有猷,李志刚,王苗..结合图像处理与时频分析的直扩/跳频信号参数估计[J].电讯技术,2014,(8):1071-1076,6.
