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Aspects of 3D tomography for multiple-pass spotlight-mode airborne SAR

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3 Author(s)
Pincus, P.B. ; Defence Sci. & Technol. Organ., Edinburgh, SA, Australia ; Preiss, M. ; Gray, D.A.

Three-dimensional SAR tomography makes use of radar data acquired at different depression angles to synthesise an aperture in elevation and thereby undo layover and resolve along height. Focusing on one tomographic method appropriate to a spotlight-mode airborne collection system, the details of spatial bandwidth usage and point-spread function are described, and the phase modulation effects of the initial two-dimensional image formation stage are analysed in terms of the impact on the tomographic processing. Finally, an adaptive beamforming approach is investigated for the improvement of height resolution.

Published in:

Geoscience and Remote Sensing Symposium,2009 IEEE International,IGARSS 2009  (Volume:3 )

Date of Conference:

12-17 July 2009