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Remote Sensing Technology and Application  2016, Vol. 31 Issue (5): 900-906    DOI: 10.11873/j.issn.1004-0323.2016.5.0900
    
3-D Information Reconstruction of a Space Target from 2-D ISAR Image Sequence
Wang Feng,Xu Feng,Jin Yaqiu
(Key Laboratory for Information Science of Electromagnetic Waves (MoE),
Fudan University,Shanghai 200433,China)
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Abstract  

To monitor a space object in ISAR (Inverse Synthetic Aperture Radar) technology,how to extract 3-D information from 2-D imaging is an interesting challenge in ATR (Automatic Target Recognition).A numerical approach,so\|called the Bidirectional Analytic Ray Tracing (BART) method,is first employed to numerically calculate the scattering of a complex object in space,e.g.an Envisat model under different angular positions.And then,the sequence of 2\|D ISAR imaging with angular positions is produced.Kanade-Lucas-Tomasi (KLT) feature tracker is adopted for feature extraction and matching among consecutive ISAR images.3-D positions of featured points are estimated by the orthographic factorization method (OFM).The ISAR image sequence of a simple hexagonal frustum model is simulated firstly.Then,3-D position of corner points are estimated and the result shows good accuracy.Simulated ISAR image sequence of Envisat satellite is taken as an example.The results show that 3-D shape information can be properly acquired from 2-D ISAR image sequence.
 

Key words:  ISAR imaging;3\      D information;Space target;BART;OFM     
Received:  30 November 2015      Published:  25 November 2016
TN 95  
  TP 75  
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Wang Feng,Xu Feng,Jin Yaqiu. 3-D Information Reconstruction of a Space Target from 2-D ISAR Image Sequence. Remote Sensing Technology and Application, 2016, 31(5): 900-906.

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http://www.rsta.ac.cn/EN/10.11873/j.issn.1004-0323.2016.5.0900     OR     http://www.rsta.ac.cn/EN/Y2016/V31/I5/900

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