反射器天線的單站雷達(dá)截面積
MONOSTATIC RADAR CROSS-SECTION FOR REFLECTOR ANTENNAS
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摘要: 本文用幾何光學(xué)法計(jì)算反射器天線的鏡面場(chǎng),用等效電磁流法(根據(jù)物理繞射論與與電流線積分公式導(dǎo)出)計(jì)算邊緣的繞射場(chǎng),得到了任意旋轉(zhuǎn)反射器天線在任意極化平面波入射下的單站雷達(dá)截面積(RCS)的計(jì)算公式,并給出了一些典型的數(shù)值計(jì)算結(jié)果及相應(yīng)的立體RCS圖。在水平和垂直極化入射下,本文理論值與已有的實(shí)驗(yàn)結(jié)果以及與一致性繞射理論的結(jié)果吻合較好。
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關(guān)鍵詞:
- 天線; 雷達(dá)截面; 電磁散射
Abstract: The calculation formulas of monostatic radar cross-section (RCS) of arbitrary reflectors with arbitrarily polarized plane-wave incidence are derived, where the specular field is obtained by geometrical optics and the edge-diffracted field is calculated by the method of equivalent currents (MEC). Some typical results calculated are given by means of RCS spatial graphs. For both horizontal and vertical polarizations, the theoretical results obtained in this paper agree very well with the experimental results as well as the results from uniform theory of diffraction. -
G. T. Ruck, Radar Cross Section Handbook, Vol. 2, Plenum Press, New York, (1970), pp. 661-669.[2]P. S. S. Kao, Backscatter Cross Section of A Paraboloidal Antenna, AD 370012, (1973).[3]G. L.James, Geometrical Theory of Diffraction for Electromagnetic Waves, Peter Peregrinus Lid.,England, (1981), pp.212-216.[4]Arie Michaeli, IEEE Trans. on AP, AP-32 (1984), 252-258.[5]汪茂光主編,幾何繞射理論,西北電訊工程學(xué)院出版社,1989年,第19-22頁(yè).[6][6][7]E. F.Knott et al.,阮穎錚等譯,雷達(dá)散射截面,電子工業(yè)出版社,北京,1988年,第156-160頁(yè). -
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