基于不同散射机制特征的海杂波时变多普勒谱模型

张金鹏; 张玉石; 李清亮; 吴家骥

doi:10.7498/aps.67.20171612

摘要

海杂波的多普勒谱建模对采用多普勒处理技术的雷达进行有效的海杂波抑制和目标检测具有重要的意义.本文分别考虑Bragg，白冠和破碎波三种散射机制对应的多普勒谱分量的特征，对三种谱分量的频移和展宽进行分离，并引入附加速度频移量，提出了基于不同散射机制特征的雷达海杂波时变多普勒谱模型.该模型假设谱强度为受观测时间区间影响的随机变量，能够同时适用于平均多普勒谱与短时多普勒谱建模.通过分别对黄海海域实测的岸基P，S波段海杂波平均多普勒谱与短时多普勒谱建模测试，结果表明该模型相对传统模型的建模精度更高，尤其体现在短时谱的观测时间较长和平均谱形式较为复杂的情况下，建模误差显著减小.

关键词:

Abstract

The Doppler spectrum modeling of the sea clutter is of great significance for using the Doppler radar to suppress the sea clutter and detect the target on sea surface. Taking into account the characteristics of the Doppler spectrum components corresponding to three scattering mechanisms, the Bragg, whitecap, and breaking-wave, we propose a time-varying Doppler spectrum model of radar sea clutter in this paper. The Doppler spectrum shifts and bandwidths of the three scattering mechanisms are considered respectively, and a Doppler shift of an added wave speed is introduced into this model. Because the spectrum intensity is defined as a random variable being a function of the measuring time of the sea clutter series, the model has the ability to model both the long-time averaged Doppler spectra and the short-time Doppler spectra. By modeling the short-time Doppler spectra and the long-time averaged Doppler spectra of the shore-based radar sea clutter measured in the China Yellow Sea at P and S bands, it is indicated that the proposed model has a higher precision than the conventional model, and especially, the modeling errors decrease significantly in the cases of the short-time Doppler spectra with long measuring time and the long-time averaged Doppler spectra with complex shapes.

Keywords:

作者及机构信息

1.
中国电波传播研究所, 电波环境特性及模化技术重点实验室, 青岛 266107;

2.
西安电子科技大学电子工程学院, 西安 710071

通信作者: 张金鹏, zhjinpeng@hotmail.com

基金项目: 国家自然科学基金（批准号：61401342）资助的课题.

Authors and contacts

1.
National Key Laboratory of Electromagnetic Environment, China Research Institute of Radiowave Propagation, Qingdao 266107, China;

2.
School of Electronic Engineering, Xidian University, Xi'an 710071, China

Corresponding author: Zhang Jin-Peng, zhjinpeng@hotmail.com

Funds: Project supported by the National Natural Science Foundation of China (Grant No. 61401342).

参考文献

[1]	Ward K D, Watts S 2010 IET Radar, Sonar Navig. 4 146
[2]	Li D C, Shui P L 2016 IET Radar, Sonar Navig. 10 699
[3]	Rosenberg L, Watts S 2017 IET Radar, Sonar Navig. 11 1340
[4]	Pidgeon V W 1968 J. Geophys. Res. 73 1333
[5]	Lee P H Y, Barter J D, Beach K L 1995 IEE Proc. Radar, Sonar Navig. 142 252
[6]	Walker D 2000 IEE Proc. Radar, Sonar Navig. 147 114
[7]	Rosenberg L 2014 IEEE T. Aero. Elec. Sys. 50 406
[8]	Watts S, Rosenberg L, Bocquet S 2016 IET Radar, Sonar Navig. 10 24
[9]	Watts S, Rosenberg L, Bocquet S 2016 IET Radar, Sonar Navig. 10 32
[10]	Corretja V, Meslot V, Kemkemian S, Montigny R 2017 Proceedings of the IEEE Radar Conference Seattle, WA, USA, May 8-12, 2017 p1046
[11]	Watts S, McDonald M, Rosenberg L 2015 Proceedings of the IEEE Radar Conference Johannesburg, South Africa, October 2730, 2015 p91
[12]	Jiang W Z, Yuan Y L, Wang Y H, Zhang Y M 2012 Acta Phys. Sin. 61 124213 (in Chinese) [姜文正, 袁业立, 王运华, 张彦敏 2012 61 124213]
[13]	Walker D 2001 IEE Proc. Radar, Sonar Navig. 148 73
[14]	Watts S 2012 IEEE T. Aero. Elec. Sys. 48 3303
[15]	Miller R J, Dawber W N 2002 Proceedings of the International Radar Conference Edinburgh, UK, October 15-17, 2002 p444
[16]	Ward K D, Tough R J A, Watts S 2013 Sea Clutter: Scattering, the K Distribution and Radar Performance (2nd Ed.) (London: The Institution of Engineering and Technology)
[17]	Raynal A M, Doerry A W 2010 Doppler Characteristics of Sea Clutter (New Mexico: Sandia National Laboratories)
[18]	Duncan J R, Keller W C, Wright J W 1974 Radio Sci. 9 809
[19]	Plant W J, Keller W C 1990 J. Geophys. Res. 95 16299
[20]	Zhang Y M, Wang Y H, Zhao C F 2010 Chin. Phys. B 19 084103
[21]	Zhang Y S, Zhang J P, Li X, Wu Z S 2014 Chin. Phys. B 23 108402

施引文献

[1]	Ward K D, Watts S 2010 IET Radar, Sonar Navig. 4 146
[2]	Li D C, Shui P L 2016 IET Radar, Sonar Navig. 10 699
[3]	Rosenberg L, Watts S 2017 IET Radar, Sonar Navig. 11 1340
[4]	Pidgeon V W 1968 J. Geophys. Res. 73 1333
[5]	Lee P H Y, Barter J D, Beach K L 1995 IEE Proc. Radar, Sonar Navig. 142 252
[6]	Walker D 2000 IEE Proc. Radar, Sonar Navig. 147 114
[7]	Rosenberg L 2014 IEEE T. Aero. Elec. Sys. 50 406
[8]	Watts S, Rosenberg L, Bocquet S 2016 IET Radar, Sonar Navig. 10 24
[9]	Watts S, Rosenberg L, Bocquet S 2016 IET Radar, Sonar Navig. 10 32
[10]	Corretja V, Meslot V, Kemkemian S, Montigny R 2017 Proceedings of the IEEE Radar Conference Seattle, WA, USA, May 8-12, 2017 p1046
[11]	Watts S, McDonald M, Rosenberg L 2015 Proceedings of the IEEE Radar Conference Johannesburg, South Africa, October 2730, 2015 p91
[12]	Jiang W Z, Yuan Y L, Wang Y H, Zhang Y M 2012 Acta Phys. Sin. 61 124213 (in Chinese) [姜文正, 袁业立, 王运华, 张彦敏 2012 61 124213]
[13]	Walker D 2001 IEE Proc. Radar, Sonar Navig. 148 73
[14]	Watts S 2012 IEEE T. Aero. Elec. Sys. 48 3303
[15]	Miller R J, Dawber W N 2002 Proceedings of the International Radar Conference Edinburgh, UK, October 15-17, 2002 p444
[16]	Ward K D, Tough R J A, Watts S 2013 Sea Clutter: Scattering, the K Distribution and Radar Performance (2nd Ed.) (London: The Institution of Engineering and Technology)
[17]	Raynal A M, Doerry A W 2010 Doppler Characteristics of Sea Clutter (New Mexico: Sandia National Laboratories)
[18]	Duncan J R, Keller W C, Wright J W 1974 Radio Sci. 9 809
[19]	Plant W J, Keller W C 1990 J. Geophys. Res. 95 16299
[20]	Zhang Y M, Wang Y H, Zhao C F 2010 Chin. Phys. B 19 084103
[21]	Zhang Y S, Zhang J P, Li X, Wu Z S 2014 Chin. Phys. B 23 108402

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