| 一种基于双谱的信号检测方法 |
| |
| 引用本文： | 杨政,杨春武,王明洲.一种基于双谱的信号检测方法[J].舰船科学技术,2012,34(1):73-77. |
| |
| 作者姓名： | 杨政 杨春武 王明洲 |
| |
| 作者单位： | 1. 中国船舶重工集团公司第七○五研究所,陕西西安710075;水下信息与控制重点实验室,陕西西安710075
2. 中国船舶重工集团公司第七○五研究所,陕西西安,710075 |
| |
| 摘 要： | 分析了信噪比为-3 dB噪声背景下,采用基于双谱的检测方法对微弱信号叠加随机噪声进行处理.由于任何高斯随机过程或服从高斯分布的随机矢量的高阶累计量为0的特点,高阶累计量可完全抑制高斯噪声的影响.仿真结果表明,基于双谱的目标检测方法也能较好抑制随机噪声,与传统的FFT检测方法相比,检测效果良好.
|
| 关 键 词： | 高阶统计量 双谱 随机噪声 目标检测 |
A method of signal detection based on bi-spectrum |
| |
| YANG Zheng
,
YANG Chun-wu
,
WANG Ming-zhou.A method of signal detection based on bi-spectrum[J].Ship Science and Technology,2012,34(1):73-77. |
| |
| Authors: | YANG Zheng YANG Chun-wu WANG Ming-zhou |
| |
| Institution: | 1(1.The 705 Research Institute of CSIC,Xi’an 710075,China;2.The Laboratory of Science and Technology on Underwater Information Process and Control,Xi’an 710075,China) |
| |
| Abstract: | This paper presents a signal mixed with random noise,which processed in the case of SNR=-3 dB via a method of signal detection based on bi-spectrum.According to the feature that high order cumulants of the Gaussian noise is zero response,high order cumulants can fully suppress the influence of Gaussian noise.Simulation results show that the method of signal detection based on bi-spectrum also can obtain better detection results than the traditional FFT method,in processing random noise. |
| |
| Keywords: | high order statistics bi-spectrum random noise signal detection |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
