Javier Bará

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— In Earth observation programs there is a need of passive low frequency (L-band) measurements to monitor soil moisture and ocean salinity with high spatial resolution 10–20 Km, a radiometric resolution of 1K and a revisit time of 1–3 days [1]. Compared to total power radiometers aperture synthesis interferometric radiometers are technologically attractive(More)
—Current spaceborne radiometers do not achieve the required spatial resolution demanded by the scientific community due to antenna-size technological limitations. In recent years, several space agencies have been studying aperture synthesis interferometric radiometers as a way of overcoming these limitations , which are more evident at low microwave(More)
(a) (b) Fig. 3. (a) Observation of " 00 change of ice slab on duraluminum mold at 13. the other hand, quick freezing may produce a specific distribution of salt concentration in ice volume. However, the main result of the measurements, as it follows from Figs. 2 and 3, is the hysteresis of " 00 in the case of slow-cycle temperature change for many days. Our(More)
—The correlation between the visibility samples' noise of an aperture synthesis radiometer are required for the computation of the recovered temperature noise of a given pixel and of the improvement introduced by baseline redundance. A general expression for this correlation and noise examples for a linear array are presented.
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