3D SAR beamforming under a foliage canopy from a single pass

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dc.contributor.authorPincus, P.
dc.contributor.authorPreiss, M.
dc.contributor.authorGray, D.
dc.contributor.conference40th IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2015) (19 Apr 2015 - 24 Apr 2015 : South Brisbane)
dc.date.issued2015
dc.description.abstractCoherent detection of changes on the ground under a forest canopy by repeat-pass synthetic aperture radar (SAR) imaging is problematic due to the mixture of ground and canopy responses. 3D SAR imaging, by beamforming data from multiple low-frequency acrosstrack acquisitions, offers a way to separate the forest components in height. However, data acquired from multiple passes require precise registration of the flight tracks, which is often not possible, particularly for small airborne platforms. This study analyses the potential for SAR imaging of the ground under a forest canopy using data from a single pass of a multichannel across-track radar system. We focus in particular on the case of a two-channel alternating-transmit interferometer giving three effective input channels. 3D image formation in one pass by phase-preserving adaptive beamforming is shown to provide sufficient attenuation of the interference from a model forest volume to permit a reasonable estimation of the ground coherence across two passes for coherent change detection.
dc.description.statementofresponsibilityP.B. Pincus, M. Preiss, D.A. Gray
dc.identifier.citationProceedings of the ... IEEE International Conference on Acoustics, Speech, and Signal Processing / sponsored by the Institute of Electrical and Electronics Engineers Signal Processing Society. ICASSP (Conference), 2015, vol.2015-August, pp.2779-2783
dc.identifier.doi10.1109/ICASSP.2015.7178477
dc.identifier.isbn1467369977
dc.identifier.isbn9781467369978
dc.identifier.issn1520-6149
dc.identifier.issn2379-190X
dc.identifier.urihttp://hdl.handle.net/2440/112642
dc.language.isoen
dc.publisherIEEE
dc.publisher.placeonline
dc.relation.ispartofseriesInternational Conference on Acoustics Speech and Signal Processing ICASSP
dc.rights©2015 IEEE
dc.source.urihttps://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=7158221
dc.subject3D SAR; beamforming; interferometry
dc.title3D SAR beamforming under a foliage canopy from a single pass
dc.typeConference paper
pubs.publication-statusPublished

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