| 小波去噪在伪码定距中的应用 |
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| 引用本文： | 刘己斌,赵惠昌,谢武涛.小波去噪在伪码定距中的应用[J].南京理工大学学报(自然科学版),2003,27(4):376-380. |
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| 作者姓名： | 刘己斌 赵惠昌 谢武涛 |
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| 作者单位： | 南京理工大学电子工程与光电技术学院,南京,210094 |
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| 基金项目： | 国防科技重点预研行业基金资助项目 |
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| 摘 要： | 在介绍离散小波变换原理的基础上 ,对小波阈值去噪方法在伪码定距系统中的应用进行详细分析。论述了传统滤波方法和小波去噪方法的仿真实现原理。仿真结果表明 ,与传统滤波方法相比 ,小波去噪可以大幅度提高输出信噪比 ,改善相关输出 ,从而提高定距精度。
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| 关 键 词： | 小波变换 伪码 阈值 信噪比 |
| 修稿时间： | 2002年7月1日 |
Application of Wavelet De-noising in Distance-detecting with PN Code |
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| LiuJibin,ZhaoHuichang,XieWutao.Application of Wavelet De-noising in Distance-detecting with PN Code[J].Journal of Nanjing University of Science and Technology(Nature Science),2003,27(4):376-380. |
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| Authors: | LiuJibin ZhaoHuichang XieWutao |
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| Abstract: | Based on principle of the discrete wavelet trans form is introduced firstly, the application of wavelet denoising with threshold in the distancedetecting system with pseudonoise(PN) code is analyzed. Moreove r, the simulationa l principles of the two methods, conventional denoising method with filter and wavelet denoising method, are discussed. Simulational results show that, c ompared with the conventional denoising method, wavelet denoising can improve the output of SNR and correlation value much more and increase the precisio n of distancedetecting. |
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| Keywords: | wavelet transform pseudonoise code threshold s ignaltonoise ratio |
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