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https://hdl.handle.net/2440/2361
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Type: | Journal article |
Title: | High resolution 3-D imaging via multi-pass SAR |
Author: | Homer, J. Longstaff, I. She, Z. Gray, D. |
Citation: | IET Radar, Sonar and Navigation , 2002; 149(1):www 1-www 6 |
Publisher: | IEE-Inst Elec Eng |
Issue Date: | 2002 |
ISSN: | 1751-8784 1350-2395 |
Statement of Responsibility: | Homer, J. Longstaff, I.D. She, Z. Gray, D. |
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. |
Keywords: | high resolution 3D imaging multi-pass SAR spacebome/airborne synthetic aperture radar two-dimensional terrain imagery 2D terrain imagery flight paths elevation direction interferometric SAR InSAR topographic imagery 3D multi-pass SAR imaging system short ambiguity length phase information terrain landscape tracking nonuniform DFT terrain ground plane |
Description: | © Institution of Engineering and Technology |
DOI: | 10.1049/ip-rsn:20020059 |
Published version: | http://dx.doi.org/10.1049/ip-rsn:20020059 |
Appears in Collections: | Aurora harvest 6 Electrical and Electronic Engineering publications |
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