UWB葉簇覆蓋SAR人造目標(biāo)特征信號
UWB FOPEN SAR MAN-MADE TARGET SIGNATURE
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摘要: 穿透葉簇的VHF/UHF超寬帶(UWB)SAR具有相對帶寬很寬,積累角大的特點(diǎn),能同時(shí)獲得距離、方位兩個(gè)方向的高分辨能力,用于探測地面隱蔽人造目標(biāo)。在VHF/UHF低頻段,一般的人造目標(biāo)可簡單?；癁槟繕?biāo)側(cè)面與地面之間形成的一個(gè)長二面角。本文得出了二面角目標(biāo)模型的散射回波信號形式,從理論上模擬產(chǎn)生了人造目標(biāo)SAR圖像,建立了特征信號庫,可用于進(jìn)一步的目標(biāo)檢測和識別。Abstract: Foliage penetrating (FOPEN) VHF/UHF SAR can image hidden man-made targets with wide-angle and ultra-wideband to achieve both range and azimuth with high resolutions. The target can be modeled by dihedral formed between its side and the ground due to the long wavelength of VHF/UHF. The paper provides the backscattering signal form of dihedral model, SAR image of man-made targets is simulated in theory and the signature library is formed which can be utilized in the subsequent stages of target detection and recognition.
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Allen M R, et al. FOPEN-SAR detection by direct use of simple scattering physics, in Algorithms for Synthetic Aperture Radar Imagery II,Dominick A. Giglio, Editor, Proc. SPIE 2487, 1995, 45-55.[2]Verly J G. Physical optics polarization scattering matrix for a right-angle dihedral. AD-A293036, 1995.[3][蔣詠梅.UWB葉簇覆蓋SAR人造目標(biāo)模型.技術(shù)報(bào)告,長沙:國防科技大學(xué),1997.[4]張澄波. 綜合孔徑雷達(dá)--原理、系統(tǒng)分析與應(yīng)用. 北京: 科學(xué)出版社,1989,80-86.[5] Novak L M, Chaney R D, Willsky A S. Coherent aspect-dependent SAR image formation, in Algorithms for Synthetic Aperture Radar Imagery, Dominick A. Giglio, editor, Proc. SPIE 2230, 1994,256-274.[5]Allen M R, Hoff L E. Wide-angle wideband SAR matched filter image formation for enhanced detection performance, in Algorithms for Synthetic Aperture Radar Imagery, Dominick A. G. editor, Proc. SPIE 2230, 1994, 302-314. -
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