粗糙海面對高頻雷達地波空間場分量傳播損耗的影響
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: 為研究粗糙海面對高頻地波雷達的影響,本文首先引入了更符合實驗結(jié)論的粗糙海面相干譜反射系數(shù)的修正公式,并將其代入到雷達方程,計算了高頻雷達地波空間場分量的傳播損耗。本文所預(yù)期的結(jié)果符合架設(shè)于海岸的高頻地波雷達的實際環(huán)境。
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關(guān)鍵詞:
- 反射系數(shù); 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]饒親江,龔中麟,徐承和.粗糙海面中的島嶼對雷達波的衍射損耗.電波科學(xué)學(xué)報,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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