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Accounting for Azimuth Ambiguities in Interferometric Performance Analysis
Villano, Michelangelo and Krieger, Gerhard (2012) Accounting for Azimuth Ambiguities in Interferometric Performance Analysis. In: Proceedings of the IEEE International Geoscience and Remote Sensing Symposium (IGARSS). IEEE. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2012-07-22 - 2012-07-27, Munich, Germany.
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Abstract
Azimuth ambiguities affect the interferometric performance of SAR systems, causing a bias in the interferometric phase and a modulation of the interferometric coherence, as also visible in some TanDEM-X interferograms. This paper provides an explanation for this phenomenon and derives the analytical expressions for the phase bias and the coherence, resorting to the interferogram statistics for jointly circular Gaussian processes. The impact of azimuth ambiguities on the overall system performance is then considered. Plots are provided, which display the standard deviation of the phase bias, as well as the expected value and the standard deviation of the coherence loss component due to azimuth ambiguities. These plots can be useful for interferometric performance analysis.
| Document Type: | Conference or Workshop Item (Speech, Paper) | ||||||
|---|---|---|---|---|---|---|---|
| Title: | Accounting for Azimuth Ambiguities in Interferometric Performance Analysis | ||||||
| Authors: |
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| Date: | 01 June 2012 | ||||||
| Journal or Publication Title: | Proceedings of the IEEE International Geoscience and Remote Sensing Symposium (IGARSS) | ||||||
| Publisher: | IEEE | ||||||
| Status: | Published | ||||||
| Keywords: | Azimuth ambiguities, interferometry, microwave remote sensing, synthetic aperture radar (SAR) | ||||||
| Event Title: | IEEE International Geoscience and Remote Sensing Symposium (IGARSS) | ||||||
| Event Location: | Munich, Germany | ||||||
| Event Type: | international Conference | ||||||
| Event Dates: | 2012-07-22 - 2012-07-27 | ||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||
| HGF - Program: | Space | ||||||
| HGF - Program Themes: | W EO - Erdbeobachtung | ||||||
| DLR - Research area: | Space | ||||||
| DLR - Program: | W EO - Erdbeobachtung | ||||||
| DLR - Research theme (Project): | W - Vorhaben Entwicklung eines Mini-SAR (old) | ||||||
| Location: | Oberpfaffenhofen | ||||||
| Institutes and Institutions: | Microwaves and Radar Institute > Radar Concepts | ||||||
| Deposited By: | Michelangelo Villano | ||||||
| Deposited On: | 19 Jun 2012 14:46 | ||||||
| Last Modified: | 06 Aug 2012 10:20 |
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