罗忠涛^1,,,
严美慧¹,
卢琨²,
何子述³
1.重庆邮电大学通信与信息工程学院 重庆 400065
2.南京电子技术研究所 南京 210013
3.电子科技大学信息与通信工程学院 成都 611731
基金项目:国家自然科学基金(61701067, 61702065)

详细信息

作者简介:罗忠涛：男，1984年生，讲师，硕士生导师，研究方向为通信信号处理、雷达信号处理与数字图像处理
严美慧：女，1996年生，硕士生，研究方向为雷达信号处理和数字图像处理
卢琨：男，1977年生，博士，研究员级高级工程师，研究方向为超视距雷达系统设计和信息处理
何子述：男，1962年生，教授，博士生导师，研究方向为雷达信号处理、阵列信号处理与MIMO信号处理

通讯作者:罗忠涛　luozt@cqupt.edu.cn

中图分类号:TN958.93

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文章访问数:323
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被引次数:0

出版历程

收稿日期:2020-08-03
修回日期:2020-12-24
网络出版日期:2021-01-04
刊出日期:2021-03-22

The Characteristics of Sea-clutter and Interferences in Various Domains and the Detection of Sea-clutter for Over-The-Horizon Radar

Zhongtao LUO^1,,,
Meihui YAN¹,
Kun LU²,
Zishu HE³
1. School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
2. Nanjing Research Institute of Electronics Technology, Nanjing 210013, China
3. School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
Funds:The National Natural Science Foundation of China (61701067, 61702065)


摘要
摘要:针对超视距(OTH)雷达接收信号成分复杂的问题，该文提出基于多域组图的信号分析方法，讨论海杂波、瞬态干扰和射频干扰的多域特征。运用时域、频域、距离域、重复周期和多普勒5域，组合为6种2维矩阵图，提出雷达接收数据的“五域六图”(5D6M)方法。通过五域六图，各种接收信号成分在多个域得以分离，海杂波和干扰在不同域的特征得以体现，清晰展示海杂波的频谱和多普勒谱特性、瞬态干扰的大功率和短时性以及射频干扰的窄带与多普勒特性。基于五域六图的信号特性分析，能够为雷达信号分析与处理提供很好的帮助。该文以海杂波为例，设计了基于频域-多普勒域的海杂波多普勒单元检测的新方法。
关键词:超视距雷达/
海杂波/
干扰/
特征分析
Abstract:Considering that the receiving data of Over-The-Horizon (OTH) radar is complicated, a signal analysis method based on various domains and maps is proposed, and the characteristics of sea-clutter, transient interference and radio frequency interference are discussed in this paper. By employing the time, the frequency, the range, the period and the Doppler domains, six kinds of two dimensional matrices or maps are constructed, which forms the Five-Domain-Six-Map (5D6M) concept for the radar receiving data. By using the 5D6M, the signal components of the receiving data and reveal their characteristics can be separated in various domains, including the spectrum and Doppler property of sea-clutter, the power and transient features of transient interference, and the narrowband and Doppler property of radio frequency interference. The characteristic analysis based on the 5D6M can help the radar signal analysis and processing. By taking the sea-clutter as an example, a novel method for detecting the sea-clutter Doppler based on the frequency-Doppler map is proposed.
Key words:Over-The-Horizon (OTH) radar/
Sea-clutter/
Interference/
Characteristic analysis



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