| 基于直线检测的两种LFM信号时频变换性能的比较 |
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| 引用本文： | 李涛,侯舒娟,曾海彬,吴嗣亮.基于直线检测的两种LFM信号时频变换性能的比较[J].北京理工大学学报,2008,28(7):622-625. |
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| 作者姓名： | 李涛 侯舒娟 曾海彬 吴嗣亮 |
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| 作者单位： | 北京理工大学,信息科学技术学院电子工程系,北京,100081;空军装备研究院,北京,100085;北京理工大学,信息科学技术学院电子工程系,北京,100081;北京跟踪与通信技术研究所,北京,100094 |
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| 摘 要： | 为了比较Wigner-Hough变换(WHT)和Radon-Ambiguity变换(RAT)之间的差别,利用平稳高斯随机过程各态遍历特性,推导了RAT在采样点数较多的情况下,采样点数与输入、输出信噪比之间的关系表达式.从变换的实现方法、运算量及分辨率等方面与WHT进行了比较.仿真结果表明,基于解线频调法的WHT更适合低信噪比下线性调频(LFM)信号检测和估计.
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| 关 键 词： | Wigner-Hough变换 Radon-Ambiguity变换 差别 |
| 收稿时间： | 2007/12/20 0:00:00 |
Comparison of Performance Between Two LFM Signals Time-Frequency Transform Using Line Detection |
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| LI Tao,HOU Shu-juan,ZENG Hai-bin and WU Si-liang.Comparison of Performance Between Two LFM Signals Time-Frequency Transform Using Line Detection[J].Journal of Beijing Institute of Technology(Natural Science Edition),2008,28(7):622-625. |
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| Authors: | LI Tao HOU Shu-juan ZENG Hai-bin and WU Si-liang |
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| Institution: | LI Tao1,2,HOU Shu-juan1,ZENG Hai-bin3,WU Si-liang1 |
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| Abstract: | In order to compare the differences between the Wigner-Hough transform(WHT) and Radon-Ambiguity transform(RAT),the expression of input,output signal noise ratio(SNR) and sampling points are deduced basaed on the ergodic property of stationary Gaussian stochastic process,under cases of large sampling points.The realization,computational burden and resolution of RAT are compared with WHT.Simulations testified that WHT by dechirping is more suitable for LFM signals detection and estimation at low SNR. |
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| Keywords: | Wigner-Hough transform Radon-Ambiguity transform difference |
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