Results
author = "Camps Carmona, Adriano José"
> : "Radiometry"
(x)
Noise wave analysis of Dicke and noise injection radiometers: Complete S parameter analysis and effect of temperature gradients
Author(s) :
Camps Carmona, Adriano José
Description :
The performance analysis of microwave radiometers is often
simplified assuming that most/all circuits are perfectly matched
and that all are at the same physical temperature. However, the
increasing performances demanded to future instruments makes
necessary to assess their performance including all...
Repository :
UPCommons - E-prints UPC
Language(s) :
English
A two-dimensional doppler-radiometer for earth observation
Description :
Compared to synthetic aperture radars (SARs), the angular resolution of microwave radiometers is quite poor. Traditionally, it has been limited by the physical size of the antenna. However, the angular resolution can be improved by means of aperture synthesis interferometric techniques. A narrow bea...
Repository :
UPCommons - E-prints UPC
Language(s) :
English
Potential synergetic use of GNSS-R signals to improve the sea-state correction in the sea surface salinity estimation: Application to the SMOS mission
Description :
Repository :
UPCommons - E-prints UPC
Language(s) :
English
Potential synergetic use of GNSS-R signals to improve the sea-state correction in the sea surface salinity estimation: Application to the SMOS mission
Description :
It is accepted that the best way to monitor sea surface
salinity (SSS) on a global basis is by means of L-band radiometry.
However, the measured sea surface brightness temperature
(TB) depends not only on the SSS but also on the sea surface
temperature (SST) and, more importantly, on the sea state, ...
Repository :
UPCommons - E-prints UPC
Language(s) :
English
Extension of Kirchhoff method under stationary phase approximation to determination of polarimetric thermal emission from the sea
Description :
Wind direction over the sea can be determined from radiometric measurements of the third Stokes parameter (TU). The Kirchhoff method is extended under the stationary phase approximation to compute the dependence of TU on frequency, wind speed and incidence angle. Numerical predictions, in agreement ...
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
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
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
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