| 基于双阈值小波变换在雷达测试数据处理中的应用 |
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| 引用本文： | 孙明珠,盖强.基于双阈值小波变换在雷达测试数据处理中的应用[J].应用科技,2011,38(4):57-59. |
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| 作者姓名： | 孙明珠 盖强 |
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| 作者单位： | 1. 海军大连舰艇学院研究生管理大队,辽宁,大连,116018
2. 海军大连舰艇学院,装备自动化系,辽宁,大连,116018 |
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| 基金项目： | 国防基础研究基金项目资助 |
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| 摘 要： | 针对雷达测试数据中存在大量噪声和野值的问题,分析了雷达测试数据噪声、野值产生的原因及其在小波域上的特性,根据此特性提出基于显著检验水平的准则野值判别方法和小波阈值消噪的新双阈值函数.利用此双阈值对数据小波变换细节分量进行处理,然后重建原数据,从而达到消噪、去野值的目的.与小波默认阈值消噪相比,此方法对野值的剔除效果显著,消噪后的信噪比有较大提高.
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| 关 键 词： | 小波变换 雷达测试 消噪 野值 阈值函数 |
The application of dual threshold wavelet transform in data processing of radar test data |
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| SUN Mingzhu,GAI Qiang.The application of dual threshold wavelet transform in data processing of radar test data[J].Applied Science and Technology,2011,38(4):57-59. |
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| Authors: | SUN Mingzhu GAI Qiang |
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| Affiliation: | SUN Mingzhu1,GAI Qiang2(1.Department of Graduate Management,Dalian Naval Academy,Dalian 116018,China,2.Department of Equipment System and Automation,China) |
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| Abstract: | The radar test data have a lot of noise and abnormal data.To overcome this shortcoming,we analyzed the cause for it and its characteristics in wavelet domain,and on the basis of this,proposed a novel dual threshold function,which is based on wavelet threshold denoising and criterion-which is of remarkable test level and is used for judging of abnormal data.The dual threshold was used to deal with precise components after which former data was reconstructed,thereby achieving the purpose of denoising and gett... |
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| Keywords: | wavelet transform radar-and-tests denoising abnormal data limit values |
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