结合足迹和相位信息的SAR高层建筑三维重建

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关键词：建筑足迹；干涉合成孔径雷达；高分辨率合成孔径雷达；高层建筑；三维重建 中图分类号：TN957.52 文献标志码：A DOI：10.12305/j.issn.1001-506X.2025.05.10

3D reconstruction of high-rise buildings from SAR combined with footprint and phase information

LIU Ning1，2，3， LI Fangfang1，2，* ， LI Xinwu 1，4 ，HONG Wen1，2，3

（1.Aerospace Information Research Institute，ChineseAcademy of Sciences，Beijing1094，China; 2. KeyLaboratory of Technology in Geospatial Information Processing and Application System， Chinese Academyof Sciences，Beijing 10o19o，China；3. Schoolof Electronic，Electrical and Communication Engineering，Universityof Chinese Academyof Sciences，Beijing 10o049，China；4.Key Laboratoryof Digital Earth Science，ChineseAcademy of Sciences，Beijing1Ooo94，China）

Abstract：Aiming at the dificultyof distinguishing adjacent buildings and extracting the length of layover areas causedbythe diverse forms and dense distribution of high-rise buildings in urban areas，a high-rise building thre-dimensional（3D）reconstruction method from high-resolution synthetic aperture radar（SAR） based on footprint and phase information is proposed.By introducing external footprint information，registered with double bounce bright lines，complete and accurate building footprints on SAR images are obtained，and the distinction between adjacent high-rise buildings incomplex situations is realized.Based on the relationship betweenthe building footprint and the interferometric phase，the footprint direction and the interferometric fringe direction，the length of the layover area of each footprint edge is accurately extracted to obtain the building height.Finally，parametersof high-rise buildings with missing footprintsare extracted.3Dreconstruction of high-rise buildings is realized based on the footprint and heightof each building.Experimental results show that the proposed method has promising 3D reconstruction capabilities of high-rise buildings.

Keywords：building footprint；interferometric synthetic aperture radar（InSAR）； high-resolution synthetic aperture radar（SAR）；high-rise building；three-dimensional（3D） reconstruction

0 引言

合成孔径雷达（syntheticapertureradar，SAR）全天时、全天候的优势使其在地物信息提取方面得到广泛的应用[1-3]。（剩余29927字）