Results
author = "Camps Carmona, Adriano José"
The specification of channel filters for an interferometric radiometer
Author(s) :
Bará Temes, Francisco Javier
,
Camps Carmona, Adriano José
,
Corbella Sanahuja, Ignasi
,
Torres Torres, Francisco
Description :
Differences among the channels that form an interferometric radiometer result in amplitude and phase errors in the cross correlations measured from the signals collected by each pair of antennas (visibility samples). Since point source calibration of a satellite-embarked instrument operating in a ra...
Repository :
UPCommons - E-prints UPC
Language(s) :
English
Considerations About Antenna Pattern Measurements of 2-D Aperture Synthesis Radiometers
Author(s) :
Camps Carmona, Adriano José
,
Skou, Neils
,
Torres Torres, Francisco
,
Corbella Sanahuja, Ignasi
,
Duffo Ubeda, Núria
Description :
Accurate measurement of the antenna voltage patterns of large-aperture synthesis radiometers is critical in order to achieve good radiometric accuracy, and a very time consuming and expensive task. Measurement requirements and a tradeoff study relating radiometric accuracy degradation and number of ...
Repository :
UPCommons - E-prints UPC
Language(s) :
English
Determination of sea surface salinity and wind speed by L-band microwave radiometry from a fixed platform
Author(s) :
Gabarró Prats, Carolina
,
Vall-Llossera Ferran, Mercedes Magdalena
,
Font, Jordi
,
Camps Carmona, Adriano José
Description :
The European Space Agency Soil Moisture and
Ocean Salinity (SMOS) mission aims at obtaining global maps of
soil moisture and sea surface salinity from space for large-scale and
climatic studies. It uses an L-band (1400–1427 MHz) Microwave
Interferometric Radiometer by Aperture Synthesis to measure
b...
Repository :
UPCommons - E-prints UPC
Language(s) :
English
The correlation of visibility errors and its impact on the radiometric resolution of an aperture synthesis radiometer
Author(s) :
Bará Temes, Francisco Javier
,
Camps Carmona, Adriano José
,
Torres Torres, Francisco
,
Corbella Sanahuja, Ignasi
Description :
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 ...
Repository :
UPCommons - E-prints UPC
Language(s) :
English
Analisys of noise-injection networks for interferometric-radiometer calibration
Author(s) :
Corbella Sanahuja, Ignasi
,
Camps Carmona, Adriano José
,
Torres Torres, Francisco
,
Bará Temes, Francisco Javier
Description :
The spatial resolution of current space-borne Earth observation radiometers is limited by the physical antenna aperture. This is especially critical at L-band, which exhibits high sensitivity to soil moisture and sea surface salinity. Interferometric radiometers (InR's) are currently being studied b...
Repository :
UPCommons - E-prints UPC
Language(s) :
English
Radiometric Sensitivity Computation in Aperture Synthesis Interferometric Radiometry
Author(s) :
Camps Carmona, Adriano José
,
Corbella Sanahuja, Ignasi
,
Bará Temes, Francisco Javier
,
Torres Torres, Francisco
Description :
This paper is concerned with the radiometric sensitivity computation of an aperture synthesis interferometric radiometer devoted to Earth observation. The impact of system parameters and the use of simultaneous redundant measurements are analyzed. The interferometric radiometer uncertainty principle...
Repository :
UPCommons - E-prints UPC
Language(s) :
English
Radiometric sensitivity computation in aperture synthesis interferometric radiometry
Author(s) :
Camps Carmona, Adriano José
,
Corbella Sanahuja, Ignasi
,
Bará Temes, Francisco Javier
,
Torres Torres, Francisco
Description :
This paper is concerned with the radiometric sensitivity computation of an aperture synthesis interferometric radiometer devoted to Earth observation. The impact of system parameters and the use of simultaneous redundant measurements are analyzed. The interferometric radiometer uncertainty principle...
Repository :
UPCommons - E-prints UPC
Language(s) :
English
The processing of hexagonally sampled signals with standard rectangular techniques: application to 2D large aperture synthesis interferometric radiometers
Author(s) :
Camps Carmona, Adriano José
,
Bará Temes, Francisco Javier
,
Corbella Sanahuja, Ignasi
,
Torres Torres, Francisco
Description :
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 1 K and a revisit time of 1-3 days. Compared to total power radiometers aperture synthesis inter...
Repository :
UPCommons - E-prints UPC
Language(s) :
English
Considerations about antenna pattern measurements of 2-D aperture synthesis radiometers
Author(s) :
Camps Carmona, Adriano José
,
Skou, Neils
,
Torres Torres, Francisco
,
Corbella Sanahuja, Ignasi
,
Duffo Ubeda, Núria
Description :
Accurate measurement of the antenna voltage patterns of large-aperture synthesis radiometers is critical in order to achieve good radiometric accuracy, and a very time consuming and expensive task. Measurement requirements and a tradeoff study relating radiometric accuracy degradation and number of ...
Repository :
UPCommons - E-prints UPC
Language(s) :
English
Optimum Redundant Array Configurations for Earth Observation Aperture Synthesis Microwave Radiometers
Author(s) :
Corbella Sanahuja, Ignasi
,
Camps Carmona, Adriano José
,
Duffo Ubeda, Núria
,
Vall-Llossera Ferran, Mercedes Magdalena
Description :
Two-dimensional aperture synthesis radiometry is the technology
selected for ESA's SMOS mission to provide high resolution L-band
radiometric imagery. The array topology is a Y-shaped structure. The
position and number of redundant elements to minimise instrument
degradation in case of element failu...
Repository :
UPCommons - E-prints UPC
Language(s) :
English