| 高斯噪声中非高斯弱信号的双谱检测 |
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| 引用本文： | 林品兴,毛士艺,张朝阳. 高斯噪声中非高斯弱信号的双谱检测[J]. 航空学报, 1993, 14(7): 428-432 |
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| 作者姓名： | 林品兴 毛士艺 张朝阳 |
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| 作者单位： | 北京航空航天大学电子工程系,北京 100083 |
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| 摘 要： | 传统的能量检测在接收信号为高斯分布下最优,其检测性能最终取决于信噪比。当信噪比下降时,检测性能必然恶化,而且这种恶化是不可避免的和难以改善的。为了改善弱信号的检测性能,本文同时利用了信号的三阶和二阶统计量构造一种双通道信号检测器,在强高斯噪声的背景下,只要弱信号蕴含有足够多的双谱信息,其检测性能将远远超过基于传统的能量检测器的性能。
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| 关 键 词： | 检测 双谱 非高斯信号 |
| 收稿时间： | 1992-01-09 |
| 修稿时间： | 1992-05-22 |
BISPECTRAL DETECTION OF NON-GAUSSIAN WEAK SIGNAL IN GAUSSIAN NOISE |
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| Lin Pin-xing,. Mao Shi-yi,Zhang Zhao-yan. BISPECTRAL DETECTION OF NON-GAUSSIAN WEAK SIGNAL IN GAUSSIAN NOISE[J]. Acta Aeronautica et Astronautica Sinica, 1993, 14(7): 428-432 |
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| Authors: | Lin Pin-xing . Mao Shi-yi Zhang Zhao-yan |
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| Affiliation: | Department of Electronic Engineering, Beijing Universityof Aeronautics and Astronautics, Beijing, 100083 |
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| Abstract: | The detection performance relies finally on Signal Noise Ratio(SNR) in the traditional energy based detection technology. To improve the detection performance of the weak non-Gaussian signal in Gaussian noise, both third-order and second-order statistics of the received data are used to construct a two-channel detector. The performance of the two-channel detector is significantly improved as long as the bispectrum of received data is large enough . |
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| Keywords: | detection bispectrum non-Gaussian signal |
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