A two-dimensional Doppler-Radiometer for Earth observation
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Cita com:
hdl:2117/103986
Tipus de documentText en actes de congrés
Data publicació2000
EditorIEEE Piscataway
Condicions d'accésAccés obert
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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.
CitacióCamps, A., Swift, C. A two-dimensional Doppler-Radiometer for Earth observation. A: IEEE International Geoscience and Remote Sensing Symposium. "IGARSS 200: IEEE 2000 International Geoscience and Remote Sensing Symposium: Taking the Pulse of the Planet: The Role of Remote Sensing in Managing the Environment: 24-28 July 2000, L' Hilton Hawaiian Village, Honolulu Hawaii USA: proceedings". Honolulú, Hawaii: IEEE Piscataway, 2000.
ISBN0-7803-6362-0
Versió de l'editorhttp://ieeexplore.ieee.org/document/934088/
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