Results
author = "Camps Carmona, Adriano José"
Aplication of Interferometric Radiometry to Earth Observation
Author(s) :
Camps Carmona, Adriano José
Description :
La tesis contiene en primer lugar un estudio de las técnicas de interferometria radiometrica, con énfasis en las causas de error y su impacto en las características del sensor. A continuación se proponen y comparan varias técnicas de calibracion basadas en la inyección de ruido.Un aspecto notable de...
Repository :
Universitat Politècnica de Catalunya: Tesis Doctorals en Xarxa (TDX)
Language(s) :
English
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
Dual-beam interferometry for ocean surface current vector mapping
Description :
The recent use of along-track interferometry (ATI) in synthetic aperture radar (SAR) has shown promise for synoptic measurement of ocean surface currents. ATI-SARs have been used to estimate wave fields, currents, and current features. This paper describes and analyzes a dual-beam along-track interf...
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
RFI mitigation in microwave radiometry using wavelets
Description :
The performance of microwave radiometers can be seriously degraded by the presence of radio-frequency interference (RFI). Spurious signals and harmonics from lower frequency bands, spread-spectrum signals overlapping the “protected” band of operation, or out-of-band emissions not properly rejected b...
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
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
Synthesis of large low-redundancy linear arrays
Description :
Aperture synthesis interferometric radiometers can overcome
mass, weight and mechanical scan limitations of present-day radiometers.
A full antenna array is “thinned” by eliminating selected antennas, while
keeping all possible antenna separations. This brief describes a new technique
for the direct...
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
A model of the wind direction signature in the Stokes emission vector from the ocean surface at microwave frequencies
Description :
This paper presents a model of the Stokes emission vector from the ocean surface. The ocean surface is described as an ensemble of facets with Cox and Munk's (1954) Gram-Charlier slope distribution. The study discusses the impact of different up-wind and cross-wind rms slopes, skewness, peakedness, ...
Repository :
UPCommons - E-prints UPC
Language(s) :
English