Variational approaches on discontinuity localization and field estimation in sea surface temperature and soil moisture
Sun, Walter and Çetin, Müjdat and Thacker, W. Carlisle and Chin, T. Mike and Willsky, Alan S. (2006) Variational approaches on discontinuity localization and field estimation in sea surface temperature and soil moisture. IEEE Transactions on Geoscience and Remote Sensing, 44 (2). pp. 336-350. ISSN 0196-2892
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Official URL: http://dx.doi.org/10.1109/TGRS.2005.861012
Some applications in remote sensing require estimating a field containing a discontinuity whose exact location is a priori unknown. Such fields of interest include sea surface temperature in oceanography and soil moisture in hydrology. For the former, oceanic fronts form a temperature discontinuity, while in the latter sharp changes exist across the interface between soil types. To complicate the estimation process, remotely sensed measurements often exhibit regions of missing observations due to occlusions such as cloud cover. Similarly, water surface and ground-based sensors usually provide only an incomplete set of measurements. Traditional methods of interpolation and smoothing for estimating the fields from such potentially sparse measurements often blur across the discontinuities in the field.
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