High resolution 3-D imaging via multi-pass SAR
Homer, J, Longstaff, I D, She, Zhishun and Gray, D A (2002) High resolution 3-D imaging via multi-pass SAR.
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Abstract
Spaceborne/airborne synthetic aperture radar (SAR) systems provide high resolution two-dimensional terrain imagery. The paper proposes a technique for combining multiple SAR images, acquired on flight paths slightly separated in the elevation direction, to generate high resolution three-dimensional imagery. The technique could be viewed as an extension to interferometric SAR (InSAR) in that it generates topographic imagery with an additional dimension of resolution. The 3-D multi-pass SAR imaging system is typically characterised by a relatively short ambiguity length in the elevation direction. To minimise the associated ambiguities we exploit the relative phase information within the set of images to track the terrain landscape. The SAR images are then coherently combined, via a nonuniform DFT, over a narrow (in elevation) volume centred on the 'dominant' terrain ground plane. The paper includes a detailed description of the technique, background theory, including achievable resolution, and the results of an experimental study
| Item Type: | Article |
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| Additional Information: | ©2002 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.The published version of this article can also be located at httpp://dx.doi.org/10.1049/ip-rsn:20020059httpp://dx.doi.org/10.1049/ip-rsn:20020059 |
| Keywords: | Spaceborne/airborne synthetic aperture radar, SAR images, three-dimensional imagery, interferometric, topographic imagery, 3-D multi-pass, nonuniform DFT |
| Divisions: | ?? GlyndwrUniversity ?? |
| Depositing User: | ULCC Admin |
| Date Deposited: | 05 Oct 2011 09:14 |
| Last Modified: | 11 Dec 2017 20:06 |
| URI: | https://wrexham.repository.guildhe.ac.uk/id/eprint/309 |
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