空军工程大学学报（自然科学版）2012，Vol.13Issue(4)：46-50,5.DOI:10.3969/j.issn.1009-3516.2012.04.010
一种新的小波基函数及其在雷达信号特征提取中的应用
A New Wavelet Atom and Its Application in Radar Signal Feature Extraction
摘要
Abstract
In order to further improve the precision of estimating the instantaneous frequency in radar signal processing , a new Morlet wavelet atom, based on the known Morlet wavelet atom to extract the signal wavelet ridge feature ( WRF) is put forward. By analyzing the wavelet ridge principium and the qualifications of wavelet atom for extracting the WRF rightly in - depth, the WRF of radar emitter signals can be extracted. Consequently, the instantaneous frequency can be estimated. The new - Morlet has better performance of time - frequency colligation character in contrasts with the known Morler wavelet atom. At the same time, the iterative algorithm of estimating the instantaneous frequency is analyzed, which is based on the wavelet ridge principium. The computer simulation experiment results also show that the new - Morlet wavelet atom has better performances in detecting WRF and counteracting noise than the common Morlet wavelet atom. The experiment proves the effectiveness of the method.关键词
雷达信号/Morlet小波/瞬时频率/小波变换/小波脊线Key words
radar signal/ Morlet wavelet/ instantaneous frequency/ wavelet transform/ wavelet ridge分类
信息技术与安全科学引用本文复制引用
黄兴,唐宏,刘潮..一种新的小波基函数及其在雷达信号特征提取中的应用[J].空军工程大学学报（自然科学版）,2012,13(4):46-50,5.基金项目
陕西省自然科学基金资助项目(2010JQ8007) （2010JQ8007）
