合成孔徑雷達(dá)用的垂直極化天線
A VERTICAL POLARIZED ANTENNA FOR SYNTHETIC APERTURE RADAR
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摘要: 正 (一)引言 合成孔徑雷達(dá)是成象雷達(dá)。它對(duì)測(cè)繪地區(qū)的地物目標(biāo)進(jìn)行成象。通常,雷達(dá)天線只輻射水平極化的電磁波,但由于地物目標(biāo)的多樣性和復(fù)雜性,往往對(duì)電磁波的極化有轉(zhuǎn)換效應(yīng)。為了使雷達(dá)盡可能多地收集地物目標(biāo)的遙感信息,只作一種極化的發(fā)射和接收顯然是不夠的。為此,我們?cè)谘兄戚椛渌綐O化波的天線的基礎(chǔ)上研制了輻射垂直極化波的天線,提供給雷達(dá)樣機(jī)作飛行試驗(yàn)成象和圖象比較用。 設(shè)計(jì)垂直極化天線采用的是波導(dǎo)隙縫線陣和喇叭形結(jié)構(gòu)的方案。它的外形、尺寸和
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關(guān)鍵詞:
Abstract: This paper describes a simple design method of a vertical polarized antenna operated in the X-Band. This antenna consists of longitudinal shunt slotted array at the broad side of rectangular waveguide and metallic horned plates.A real size model was fabricated. The eomputed results are in agreement with measured ones approximately. Although this method is preliminary, it has practical value in antenna design. -
W. H. Watson, The Physical Principles of Wave Guide Transmission and Antenna Systems, Chapter 8,(1946).[2]Г.З.Айизенберг,Антенны Улътракоротких Волн Главы Ⅸ,Ⅺ,ⅩⅫ,Связъиздат Москва,1957.[3]田憲祖,電子科學(xué)學(xué)刊,5(1983), 192.[4]A. E. Ratkevich, Meteorological Radar Facility (MRF) Slot Conductance Investigations, NASA CR-152465. January, 1977. -
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