International Telemetering Conference Proceedings / October 22-25, 2001 / Riviera Hotel and Convention Center, Las Vegas, Nevada / This paper presents the results of a feasibility study undertaken by the University of Salzburg (Austria), investigating the autonomous acquisition of environmental data in a global network. A suggested application which is used as the basis of this paper is a volcano monitoring system which would be able to track the activity of a volcano and act as a disaster warning system. The background Volcano observation data required for such a system is covered, before discussing the concepts for sensor data acquisition, storage and processing. A final analysis is then presented of the opportunities for the transmission by packet radio (both terrestrial and satellite).

Thesis (MEng (Electrical and Electronic Engineering))--University of Stellenbosch, 2006. / The aim of this thesis is to find an a ordable and upgradeable manner of increasing the data rate of current satellite systems. The compression, modulation and amplification techniques and telecommunication regulations restrict the data rate, which are bypassed by designing a parallel channel configuration. In order to test this solution a system is developed that is based on the existing standards of DVB-S and MPEG-2. The combination of these standards protect the data from interference, package the data for ease of storage, modulate the data to more effectively radiate the signal and shape the spectrum to adhere to telecommunication regulations. The spacing between the channels is reduced and the transmitted signal is amplified to inject interference into the system. The effect of this interference on the receiver is shown by transmitting image data and comparing the received image with the original.