用于機(jī)載SAR的距離向波束賦形微帶天線陣的研究
Study on the Microstrip Antenna Array for Airborne SAR System with the Shaped Beam in the Range Plane
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摘要: 通過對寬測繪帶的機(jī)載合成孔徑雷達(dá)距離向回波特性的分析,推導(dǎo)出了天線距離向輻射賦形方向圖表達(dá)式。利用Schelkunoff單位圓結(jié)合零限填充對天線陣進(jìn)行綜合,得到了天線各單元激勵幅度和相位,并利用微帶貼片天線陣列實現(xiàn)賦形波束方向圖。該文用兩種介質(zhì)配置分別加工了實驗樣陣列,實驗結(jié)果、仿真結(jié)果與理論綜合結(jié)果三者吻合較好,從而證明了賦形方法正確,技術(shù)路線可行。
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關(guān)鍵詞:
- 微帶天線; 合成孔徑雷達(dá); 陣列綜合; 賦形波束
Abstract: The characteristic of the echo of the wide swath airborne Synthetic Aperture Radar (SAR) is analyzed, then the expression of the shaped beam radiation pattern in the range plane of antenna is induced . The pattern is synthesized using the Schelkunoff unit circle method with null filling, and the exciting amplitude and phase of the 5 elements are given. The two sample microstrip arrays with different dielectric are fabricated, and the measured results are basically in accordance with the simulated and synthesized results. The valid conclusion of the synthesized and realized the shaped beam pattern can be drawn and the technology route is feasible. -
魏鐘銓. 合成孔徑雷達(dá)衛(wèi)星. 北京: 科學(xué)出版社,2001, 第1章.[2]王小青,郭琨毅,盛新慶, 朱敏慧. 距離向多孔徑接收寬測繪帶SAR成像方法的研究[J].電子與信息學(xué)報.2004, 26(5):739-745瀏覽[3]康行健. 天線原理與設(shè)計. 北京:國防工業(yè)出版社, 1995, 第6,7章.[4]肖疆,徐曉文,董濤. 多孔毀傷時賦形反射面天線輻射特性的研究. 電波科學(xué)學(xué)報 2003,18(6): 648-651.[5]烏拉比F T, 穆爾R K, 馮建超 著. 黃培康, 汪一飛 譯. 微波遙感 (第二卷). 北京: 科學(xué)出版社, 1987: 第7章.[6]Shelkunoff S A. A mathematical theory of linear arrays. Bell System Technology Journal, 1943, 22 (1): 80-107.[7]鮑爾I J, 布哈蒂亞P 著. 梁聯(lián)倬 等譯. 微帶天線. 北京:電子工業(yè)出版社,1985, 第1章.[8]Mailloux R J, Mcllvenna J F, Kernweis N P. Microstrip array technology. IEEE Trans. Antennas Propagation, 1981, AP-29(1): 25-37.[9]鐘順時. 微帶天線理論與應(yīng)用. 西安:西安電子科技大學(xué)出版社,1991, 第1章. -