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Phase noise investigation of maximum likelihood estimation method for airborne multibaseline SAR interferometry


Magnard, Christophe; Small, David; Meier, Erich (2015). Phase noise investigation of maximum likelihood estimation method for airborne multibaseline SAR interferometry. In: PIA15+HRIGI15 – Joint ISPRS conference, Munich, 25 March 2015 - 27 March 2015, 121-125.

Abstract

The phase estimation of cross-track multibaseline synthetic aperture interferometric data is usually thought to be very efficiently achieved using the maximum likelihood (ML) method. The suitability of this method is investigated here as applied to airborne single pass multibaseline data. Experimental interferometric data acquired with a Ka-band sensor were processed using (a) a ML method that fuses the complex data from all receivers and (b) a coarse-to-fine method that only uses the intermediate baselines to unwrap the phase values from the longest baseline. The phase noise was analyzed for both methods: in most cases, a small improvement was found when the ML method was used.

Abstract

The phase estimation of cross-track multibaseline synthetic aperture interferometric data is usually thought to be very efficiently achieved using the maximum likelihood (ML) method. The suitability of this method is investigated here as applied to airborne single pass multibaseline data. Experimental interferometric data acquired with a Ka-band sensor were processed using (a) a ML method that fuses the complex data from all receivers and (b) a coarse-to-fine method that only uses the intermediate baselines to unwrap the phase values from the longest baseline. The phase noise was analyzed for both methods: in most cases, a small improvement was found when the ML method was used.

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Additional indexing

Item Type:Conference or Workshop Item (Paper), refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Geography
Dewey Decimal Classification:910 Geography & travel
Language:English
Event End Date:27 March 2015
Deposited On:15 Apr 2015 12:36
Last Modified:08 Dec 2017 12:47
Publisher:Copernicus Publications
Series Name:International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Number:XL-3/W2
ISSN:2194-9034
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.5194/isprsarchives-XL-3-W2-121-2015

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