Title :
Calibration of synthetic aperture radiometers in space: antenna effects
Author :
Le Vine, D.M. ; Weissman, D.E.
Author_Institution :
Goddard Space Flight Centre, Greenbelt, MD, USA
Abstract :
The measurement of mutual coupling is being investigated as a technique to aid in the calibration of synthetic aperture microwave radiometers. The technique is based on recent research suggesting that the antenna patterns that are needed for calibration can be reconstructed from a measurement of the mutual coupling between elements in the thinned array. A synthetic aperture radiometer is particularly suited to the measurement of mutual coupling because the basic hardware (a correlation interferometer) measures the product for each antenna pair in the array. This paper describes research to evaluate the role of mutual coupling on the antenna patterns and describes a technique to adapt the mutual coupling measurement for calibration of radiometers deployed for remote sensing from space
Keywords :
calibration; geophysical equipment; geophysical techniques; microwave antennas; microwave detectors; microwave measurement; radiometers; radiometry; remote sensing; satellite antennas; SHF; antenna effects; calibration; geophysical equipment; land surface; measurement technique; microwave radiometer; microwave radiometry; mutual coupling; satellite remote sensing; space; synthetic aperture radiometer; terrain mapping; thinned array; Antenna arrays; Antenna measurements; Aperture antennas; Calibration; Hardware; Microwave measurements; Microwave theory and techniques; Mutual coupling; Particle measurements; Radiometers;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1996. IGARSS '96. 'Remote Sensing for a Sustainable Future.', International
Conference_Location :
Lincoln, NE
Print_ISBN :
0-7803-3068-4
DOI :
10.1109/IGARSS.1996.516507
