The Characteristics of Sea-clutter and Interferences in Various Domains and the Detection of Sea-clutter for Over-The-Horizon Radar
-
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。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
-
表 1 五域名称与含义
五域 含义 英文简写 时域 一个雷达重复周期内接收数据的采样点即快时间维 T(Time) 频域 快时间维时域数据的快速傅里叶变换所对应频域 F(Frequency) 距离域 时域数据在脉冲压缩处理后，获得距离域分辨力 R(Range) 重复周期 雷达发射信号的重复周期序号，相当于慢时间维 P(Period) 多普勒维 慢时间维的快速傅里叶变换，对应频域为多普勒维 D(Doppler) 
下载: 导出CSV
表 2 六图名称与含义
六图 时域(T) 频域(F) 距离域(R) 重复周期(P) TP图将接收数据按照周期排列
所得2维矩阵FP图对TP图的快时间维进行FFT得到 RP图将接收数据脉冲压缩后按照周期
排列得到多普勒维(D) TD图对TP图慢时间维进行
加窗和FFT得到FD图对FP图慢时间维进行加窗和FFT得到 RD图对RP图慢时间维进行加窗和
FFT得到
下载: 导出CSV
-
周文瑜, 焦培南. 超视距雷达技术[M]. 北京: 电子工业出版社, 2008.ZHOU Wenyu and JIAO Peinan. Over-the-Horizon Radar Technology[M]. Beijing: Publishing House of Electronics Industry, 2008. BAZIN V, MOLINIE J P, MUNOZ J, et al. Nostradamus: An OTH radar[J]. IEEE Aerospace and Electronic Systems Magazine, 2006, 21(10): 3–11. doi: 10.1109/maes.2006.275299 FABRIZIO G A. High Frequency Over-the-Horizon Radar: Fundamental Principles, Signal Processing, and Practical Applications[M]. New York: McGraw-Hill Professional, 2013. BARRICK D E, HEADRICK J M, BOGLE R W, et al. Sea backscatter at HF: Interpretation and utilization of the echo[J]. Proceedings of the IEEE, 1974, 62(6): 673–680. doi: 10.1109/PROC.1974.9507 LIPA B J and BARRICK D E. Extraction of sea state from HF radar sea echo: Mathematical theory and modeling[J]. Radio Science, 1986, 21(1): 81–100. doi: 10.1029/RS021i001p00081 邢孟道, 保铮, 强勇. 天波超视距雷达瞬态干扰抑制[J]. 电子学报, 2002, 30(6): 823–826. doi: 10.3321/j.issn:0372-2112.2002.06.014XING Mengdao, BAO Zheng, and QIANG Yong. Transient interference excision in OTHR[J]. Acta Electronica Sinica, 2002, 30(6): 823–826. doi: 10.3321/j.issn:0372-2112.2002.06.014 唐晓东, 周文瑜. 短波雷达干扰与抗干扰技术[J]. 现代雷达, 2003, 25(2): 21–25. doi: 10.3969/j.issn.1004-7859.2003.02.006TANG Xiaodong and ZHOU Wenyu. Interference and anti-interference techniques of HF radar[J]. Modern Radar, 2003, 25(2): 21–25. doi: 10.3969/j.issn.1004-7859.2003.02.006 罗忠涛. 新体制天波超视距雷达信号处理研究[D]. [博士论文], 电子科技大学, 2015.LUO Zhongtao. Study on signal processing for future sky-wave over-the-horizon radar system[D]. [Ph. D. dissertation], University of Electronic Science and Technology of China, 2015. 赵志国, 陈建文, 鲍拯. 一种改进的OTHR自适应海杂波抑制方法[J]. 系统工程与电子技术, 2012, 34(5): 909–914. doi: 10.3969/j.issn.1001-506X.2012.05.10ZHAO Zhiguo, CHEN Jianwen, and BAO Zheng. Modified adaptive ocean clutter suppression approach in OTHR[J]. Systems Engineering and Electronics, 2012, 34(5): 909–914. doi: 10.3969/j.issn.1001-506X.2012.05.10 关泽文, 陈建文, 鲍拯. 一种改进的基于峰值信噪比-高阶奇异值分解的天波超视距雷达自适应海杂波抑制算法[J]. 电子与信息学报, 2019, 41(7): 1743–1750. doi: 10.11999/JEIT180707GUAN Zewen, CHEN Jianwen, and BAO Zheng. A modified adaptive sea clutter suppression algorithm based on PSNR-HOSVD for skywave OTHR[J]. Journal of Electronics &Information Technology, 2019, 41(7): 1743–1750. doi: 10.11999/JEIT180707 TURLEY M. Impulsive noise rejection in HF radar using a linear prediction technique[C]. The International Conference on Radar, Adelaide, Australia, 2003: 358–362. 权太范, 李健巍, 于长军, 等. 高频雷达抑制冲击干扰的研究与实验[J]. 电子学报, 1999, 27(12): 23–25. doi: 10.3321/j.issn:0372-2112.1999.12.007QUAN Taifan, LI Jianwei, YU Changjun, et al. An approach and experiment of suppressing burst interference in high-frequency radar[J]. Acta Electronica Sinica, 1999, 27(12): 23–25. doi: 10.3321/j.issn:0372-2112.1999.12.007 QUAN Yinghui, XING Mengdao, ZHANG Lei, et al. Transient interference excision and spectrum reconstruction for OTHR[J]. Electronics Letters, 2012, 48(1): 42–44. doi: 10.1049/el.2011.2799 LUO Zhongtao, HE Zishu, LU Kun, et al. Optimal receive filter design under similarity constraint in coloured noise[J]. IET Radar, Sonar & Navigation, 2015, 9(7): 888–899. doi: 10.1049/iet-rsn.2014.0421 胡进峰, 李万阁, 艾慧, 等. 基于频域干扰剔除的OTHR射频干扰抑制算法[J]. 系统工程与电子技术, 2016, 38(5): 1046–1051. doi: 10.3969/j.issn.1001-506X.2016.05.12HU Jinfeng, LI Wange, AI Hui, et al. Radio frequency interference suppression algorithm based on interference elimination of frequency domain in OTHR[J]. Systems Engineering and Electronics, 2016, 38(5): 1046–1051. doi: 10.3969/j.issn.1001-506X.2016.05.12 GUO Xin, SUN Hongbo, and YEO T S. Interference cancellation for high-frequency surface wave radar[J]. IEEE Transactions on Geoscience and Remote Sensing, 2008, 46(7): 1879–1891. doi: 10.1109/TGRS.2008.916482 LIU Ziwei, SU Hongtao, and HU Qinzhen. Radio frequency interference cancelation for skywave over-the-horizon radar[J]. IEEE Geoscience and Remote Sensing Letters, 2016, 13(3): 304–308. doi: 10.1109/LGRS.2015.2503358 ZHOU Hao and WEN Biyang. Radio frequency interference suppression in small-aperture high-frequency radars[J]. IEEE Geoscience and Remote Sensing Letters, 2012, 9(4): 788–792. doi: 10.1109/LGRS.2011.2181817 WANG Wei and WYATT L R. Radio frequency interference cancellation for sea-state remote sensing by high-frequency radar[J]. IET Radar, Sonar & Navigation, 2011, 5(4): 405–415. doi: 10.1049/iet-rsn.2010.0041 LUO Zhongtao, SONG Tiecheng, HE Zishu, et al. Approach for transient interference detection based on straight line extraction for high-frequency sky-wave radar[J]. Electronics Letters, 2017, 53(9): 618–620. doi: 10.1049/el.2016.4125 罗忠涛, 吴太锋, 何子述, 等. 基于图像分割的高频雷达射频干扰提取算法[J]. 系统工程与电子技术, 2018, 40(4): 776–781. doi: 10.3969/j.issn.1001-506X.2018.04.10LUO Zhongtao, WU Taifeng, HE Zishu, et al. Extraction of radio frequency interference based on image segmentation for high-frequency radar[J]. Systems Engineering and Electronics, 2018, 40(4): 776–781. doi: 10.3969/j.issn.1001-506X.2018.04.10 于文启, 陈建文, 李雪. 天波超视距雷达电离层相位污染时频校正方法综合性能评估[J]. 电子与信息学报, 2018, 40(4): 992–1001. doi: 10.11999/JEIT170701YU Wenqi, CHEN Jianwen, and LI Xue. Comprehensive performance evaluation of ionosphere phase contamination time-frequency correction approaches in over-the-horizon radar[J]. Journal of Electronics &Information Technology, 2018, 40(4): 992–1001. doi: 10.11999/JEIT170701 -
图(5) / 表(2)
计量
- 文章访问数: 1335
- HTML全文浏览量: 482
- PDF下载量: 111
- 被引次数: 0
下载:
