| 地形对基于波瓣分裂的米波雷达测高方法的影响 |
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| 引用本文： | 徐源,陈伯孝.地形对基于波瓣分裂的米波雷达测高方法的影响[J].雷达科学与技术,2008,6(1):9-14. |
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| 作者姓名： | 徐源 陈伯孝 |
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| 作者单位： | 西安电子科技大学雷达信号处理国家重点实验室,陕西西安,710071 |
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| 摘 要： | 针对基于波瓣分裂的米波雷达“比相比幅”测高方法，研究地形对米波雷达测高的影响。说明不同介质的平坦地面反射系数，分析影响粗糙地面反射系数的各种因素，讨论不同地面反射系数对高度测量精度的影响。阐述地面几何反射点的计算方法，解释地面有效反射区的范围及其在测高中的应用，探讨漫反射信号产生原因及其对基于波瓣分裂测高方法的影响。
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| 关 键 词： | 米波雷达 测高 波瓣分裂 地面反射系数 地面反射区 |
| 文章编号： | 1672-2337（2008）01-0009-06 |
| 收稿时间： | 2007-08-01 |
| 修稿时间： | 2007-09-17 |
Effect of Landform on Heightfinding Method Based on Beam Split in VHF Radar |
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| XU Yuan,CHEN Bai-xiao.Effect of Landform on Heightfinding Method Based on Beam Split in VHF Radar[J].Radar Science and Technology,2008,6(1):9-14. |
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| Authors: | XU Yuan CHEN Bai-xiao |
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| Affiliation: | (National Key Lab of Radar Signal Processing, Xidian University, Xi＇an 710071, China) |
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| Abstract: | In this paper, the effect of landform on the heightfinding method based on beam split in VHF Radar, namely, phase comparison and amplitude comparison, is studied. The reflection coefficient of flat ground is obtained. The factor of coarse ground reflection coefficient is discussed. The sensitivity of the heightfinding algorithm versus the reflection coefficient is studied. The geometry reflection point of ground is calculated and the ground effective reflection area is presented. Finally, the effect of diffuse reflection on the heightfinding method is studied. |
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| Keywords: | VHF radar heightfinding beam split reflection coefficient ground reflection area |
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