| 离散周期Wigner-Hough变换及其检测性能分析 |
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| 引用本文： | 王泽众,刘 锋,黄 宇,向崇文. 离散周期Wigner-Hough变换及其检测性能分析[J]. 电讯技术, 2012, 52(9): 1452-1458 |
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| 作者姓名： | 王泽众 刘 锋 黄 宇 向崇文 |
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| 作者单位： | 1. 海军航空工程学院研究生管理大队,山东烟台,264001
2. 海军航空工程学院电子信息工程系,山东烟台,264001 |
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| 基金项目： | 国家自然科学基金资助项目(60902054)；中国博士后科学基金资助项目(20090460114) |
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| 摘 要： | 分析了周期Wigner-Hough变换(PWHT)进行离散化计算时,对线性调频连续波(LFMCW)信号的检测性能.通过推导高斯白噪声中LFMCW信号经离散化PWHT后信噪比处理增益表达式,分析了离散PWHT的弱信号检测性能.通过推导离散PWHT较离散Wigner-Hough变换(WHT)的检测性能优势表达式,比较了离散PWHT与离散WHT算法的检测性能.仿真实验验证了离散PWHT的信噪比处理增益具有准相干积累的效果,PWHT较WHT更优的检测性能.
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| 关 键 词： | 时频分析 周期Wigner-Hough变换 LFMCW 检测性能分析 |
Digitized periodic Wigner-Hough transform and its performance analysis |
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| WANG Ze-zhong,LIU Feng,HUANG Yu and XIANG Chong-wen. Digitized periodic Wigner-Hough transform and its performance analysis[J]. Telecommunication Engineering, 2012, 52(9): 1452-1458 |
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| Authors: | WANG Ze-zhong LIU Feng HUANG Yu XIANG Chong-wen |
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| Affiliation: | 1(1.Graduate Students′ Brigade,Naval Aeronautical and Astronautical Institute,Yantai 264001,China;2.Department of Electronic Engineering,Naval Aeronautical and Astronautical Institute,Yantai 264001,China) |
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| Abstract: | Linear Frequency Modulation Continuous Wave(LFMCW) detection performance of the digitized Periodic Wigner-Hough Transform(PWHT) algorithm is studied. Firstly, the weak signal detection performance is analysed through the derivation of the gain of the input signal-to-noise ratio(SNR) of a noisy LFMCW signal to the output SNR after PWHT processing.Then, the PWHT and Wigner-Hough Transform(WHT) detection performances are compared by obtaining the promotion of the gain of the input SNR to the output SNR after PWHT processing and WHT processing. Finally, the quasi-coherent integration effect of the PWHT algorithm in LFMCW detection is demonstrated through simulations, and the fact that PWHT performs better in the detection of LFMCW signal than WHT is also verified. |
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| Keywords: | time frequency analysis digitized periodic Wigner-Hough transform LFMCW detection performance analysis |
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