星載SAR廣義聚束模式天線波束控制研究
Study on the Antenna Beam Control of Spaceborne Broad-Sense Spotlight SAR
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摘要: 該文介紹了廣義聚束概念并建立了星載SAR廣義聚束模式簡(jiǎn)化空間幾何模型。在此基礎(chǔ)上研究了天線波束指向角的控制方法，得出了在合成孔徑時(shí)間內(nèi)實(shí)時(shí)控制天線波束指向角的理論依據(jù)。最后結(jié)合一組系統(tǒng)參數(shù)給出了波束指向控制的實(shí)驗(yàn)結(jié)果，驗(yàn)證了理論公式。
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關(guān)鍵詞:
- 合成孔徑雷達(dá);聚束式合成孔徑雷達(dá);波束控制
Abstract: The concept of broad-sense spotlight is put forward and the simplified space geometry model of spaceborne broad-sense spotlight SAR is built in this paper. On the base of the simplified model, the control method of antenna beam direction angle is studied. The theory for computing the real-time beam direction angle is deduced. Finally, some experimental results are presented by a group of system parameters and the theory formula is validated. -
Carrara W G, Goodman R S, Majewski R M. Spotlight Synthetic Aperture Radar: Signal Processing Algorithms, Norwood, MA: Artech House, 1995, Chap. 1.[2]Jakowatz C V, Wahl D, Eichel P, Ghiglia D C, et al.. Spotlight-Mode Synthetic Aperture Radar: A Signal Processing Approach, Norwell, MA: Kluwer Academic, 1996, Chap. 2.[3]Belcher D P, Baker C J. Hybrid strip-map/spotlight SAR, IEE Colloquium on Radar and Microwave Imaging, 1994, IEE p 2/1-70963-3308.[4]袁孝康. 星載合成孔徑雷達(dá)導(dǎo)論. 北京：國(guó)防工業(yè)出版社， 2003: 274-275.[5]魏鐘銓. 合成孔徑雷達(dá)衛(wèi)星. 北京：科學(xué)出版社, 2001: 146-148. -
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