粗糙海面对高频雷达地波空间场分量传播损耗的影响
STUDY OF THE INFLUENCE OF ROUGH SEA SURFACE ON THE SPACE FIELD OF HF GROUND-WAVE RADAR ON COAST
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摘要: 为研究粗糙海面对高频地波雷达的影响,本文首先引入了更符合实验结论的粗糙海面相干谱反射系数的修正公式,并将其代入到雷达方程,计算了高频雷达地波空间场分量的传播损耗。本文所预期的结果符合架设于海岸的高频地波雷达的实际环境。
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关键词:
- 反射系数; 粗糙海面; 高斯分布
Abstract: To study the influence of rough sea surface on the space field of HF ground wave radar on coast, a derivation of the reflection is introduced first, which is suitable for rough sea surface with Gaussian distribution of heights, and then the reflection is substituted into the radar equation, finally, the propagation loss over rough sea surface is calculated. The resulting predictions in this paper are more accurate and realistic. -
Beard C I. Coherent and incoherent scattering of microwave from the ocean. IRE, Trans., on AP,1961, AP-9: 470-483.[2]Long W L. Radar Reflectivity of Land and Sea. D. C. Heath Company. 1975, 101-106.[3]Miller A M, et al. New derivation for the rough surface reflection coefficient and for the distribution of sea wave elevation. IEE Proc.-H, 1984, 131(2): 114-116.[4]饶亲江,龚中麟,徐承和.粗糙海面中的岛屿对雷达波的衍射损耗.电波科学学报,1998,13(3):236-240[5]Beckmann P, Spizzichino A. The Scattering of EM waves from Rough Surface. New York: Pergamon, 1963. -
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