Modified GIT model for predicting wind-speed behavior of low-grazing-angle radar sea clutter

doi:10.1088/1674-1056/23/10/108402

中国物理B ›› 2014, Vol. 23 ›› Issue (10): 108402-108402.doi: 10.1088/1674-1056/23/10/108402

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇下一篇

Modified GIT model for predicting wind-speed behavior of low-grazing-angle radar sea clutter

张玉石^a, 张金鹏^b, 黎鑫^b, 吴振森^a

a School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China;
b China Research Institute of Radiowave Propagation, Qingdao 266107, China

收稿日期:2014-04-25 修回日期:2014-05-26 出版日期:2014-10-15 发布日期:2014-10-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 61172031).

Modified GIT model for predicting wind-speed behavior of low-grazing-angle radar sea clutter

Zhang Yu-Shi (张玉石)^a, Zhang Jin-Peng (张金鹏)^b, Li Xin (黎鑫)^b, Wu Zhen-Sen (吴振森)^a

a School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China;
b China Research Institute of Radiowave Propagation, Qingdao 266107, China

Received:2014-04-25 Revised:2014-05-26 Online:2014-10-15 Published:2014-10-15
Contact: Zhang Yu-Shi E-mail:zhang10695@126.com
About author:84.40.Xb; 07.50.Qx; 02.50.Ey
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 61172031).

摘要/Abstract

摘要： A modified GIT model for describing the variational trend of mean clutter reflectivity as a function of wind speed is proposed. It uses two slope adjustment factors and two critical wind-speed factors to define and adjust the increasing slope of reflectivity with respect to wind speed. In addition, it uses a constant factor to compensate the overall amplitude of clutter reflectivity. The performance of the modified GIT model has been verified on the basis of the L-band low-grazing-angle radar sea clutter data. The results are in good agreement with the experimental data, indicating that the model is more effective in predicting the wind-speed behavior of clutter reflectivity than the conventional GIT model, especially for lower and higher wind speeds. We believe that the proposed model can provide deeper insights into the relationship between radar sea clutter reflectivity and sea state conditions.

关键词: GIT model, low grazing angle, radar sea clutter

Abstract: A modified GIT model for describing the variational trend of mean clutter reflectivity as a function of wind speed is proposed. It uses two slope adjustment factors and two critical wind-speed factors to define and adjust the increasing slope of reflectivity with respect to wind speed. In addition, it uses a constant factor to compensate the overall amplitude of clutter reflectivity. The performance of the modified GIT model has been verified on the basis of the L-band low-grazing-angle radar sea clutter data. The results are in good agreement with the experimental data, indicating that the model is more effective in predicting the wind-speed behavior of clutter reflectivity than the conventional GIT model, especially for lower and higher wind speeds. We believe that the proposed model can provide deeper insights into the relationship between radar sea clutter reflectivity and sea state conditions.

Key words: GIT model, low grazing angle, radar sea clutter

中图分类号: (Telemetry: remote control, remote sensing; radar)

84.40.Xb

07.50.Qx (Signal processing electronics) 02.50.Ey (Stochastic processes)

张玉石, 张金鹏, 黎鑫, 吴振森. Modified GIT model for predicting wind-speed behavior of low-grazing-angle radar sea clutter[J]. 中国物理B, 2014, 23(10): 108402-108402.

Zhang Yu-Shi (张玉石), Zhang Jin-Peng (张金鹏), Li Xin (黎鑫), Wu Zhen-Sen (吴振森). Modified GIT model for predicting wind-speed behavior of low-grazing-angle radar sea clutter[J]. Chin. Phys. B, 2014, 23(10): 108402-108402.

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Modified GIT model for predicting wind-speed behavior of low-grazing-angle radar sea clutter

Modified GIT model for predicting wind-speed behavior of low-grazing-angle radar sea clutter

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