This paper describes the current efforts underway to set up matched long-term continuously running spectrum observatories in the US (in Chicago and Blacksburg) and in Turku, Finland. The measurement equipment setup is described, along with the architecture for the networked database used to aggregate, archive and share the spectrum measurement data collected across the multiple international locations. High performance computer infrastructure to permit analysis and as appropriate fusion specific elements of the terabytes of data is described. The measurement parameters and spectrum measurement band plans are listed. Preliminary analysis results are also provided-particularly, simple occupancy statistics in Chicago and in Turku. To demonstrate the utility of the global spectrum observatory network, an interesting example is provided that compares and contrasts the very different signals that occupy the same spectral band, but in different geographic regions.
Abstract-This paper describes the RF measurement storage and database architecture for long-term continuously running spectrum observatories in the US (at Chicago and Blacksburg) and in Turku, Finland. It also describes how the measurement band plan has been collaboratively created taking into account the specifications and limits of the receiving system. Collecting measurements from different geographical locations makes it possible to perform spatial and temporal analysis of the spectrum usage in different parts of the world. As the multi-site measurements are aggregated into one central database, very high requirements are set on the database architecture, equipment, capacity, speed and number of data connections.
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