ANTENNAS FOR WEATHER SATELLITE. GROUND STATIONS

Abstract

Weather satellites$ today, form the largest source of meteorological information. With ground based observing systems, despite tremendous development in the last 100 years' less than 20 percent of the Earth's atmosphere is adequately observed. On the other hand$ the satellites have provided the meteorologists with global observation platforms, which cover the Earth's entire atmosphere every dare and pass down the Information to ground stations all over the world. This dissertation$ deals with the design and fabrication of antennas for use at the ground stations to receive the data from weather satellites. The dissertation opens with an introductory chapter on the weather satellite programme and the requirements of the ground station. The second and the third chapters deal with the design consi-derations of the antennas. In the fourth chapters the design and fabrication details have been presented. The measurements conducted on the antennas have been disc issed in chapter five. In chapter six$ the performance of the antennas, when actually put on links, is reported. Finally, in the concluding chapters some improvements to the system, based on the experience of the current set-up have been suggested. Certain acronyms$ associated with meteorological satellites, and used in this dissertation, are explained in an appendix at the end.