Please use this identifier to cite or link to this item:
http://hdl.handle.net/2117/2128
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| Title: | A two-dimensional doppler-radiometer for earth observation |
| Authors: | Camps Carmona, Adriano José
Swift, Calvin T. |
| Other authors: | Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció |
| Keywords: | Àrees temàtiques de la UPC::Enginyeria electrònica i telecomunicacions::Radiocomunicació i exploració electromagnètica::Teledetecció
Boundary layer (Meteorology)
Geophysical instruments
Radar Equipment and supplies
Remote sensing
Microwave measurements
geophysical equipment
geophysical techniques
radiometers
radiometry
remote sensing
terrain mapping
2D imaging
L-band
angular resolution
aperture synthesis interferometry
cross-correlation
equipment
geophysical measurement technique
image formation
instrument
land surface
microwave radiometer
microwave radiometry
narrow beam
satellite remote sensing
three-antenna Doppler-Radiometer
two-dimensional Doppler-Radiometer
Capa límit (Meteorologia)
Geofísica -- Aparells i instruments
Radar
Sensors remots
Microones -- Mesurament |
| Publisher: | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
| Abstract: | 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 beam is synthesized during the image formation processing of the cross-correlations measured at zero-lag between pairs of signals collected by an array of antennas. The angular resolution is then determined by the maximum antenna spacing normalized to the wavelength (baseline). The next step in improving the angular resolution is the Doppler-Radiometer, somehow related to the super-synthesis radiometers and the Radiometer-SAR. This paper presents the concept of a three-antenna Doppler-Radiometer for 2D imaging. The performance of this instrument is evaluated in terms of angular/spatial resolution and radiometric sensitivity, and an L-band illustrative example is presented.
Peer reviewed |
| Appears in Collections: | Documents de recerca
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