ISIS
The ISIS Array (Intercepted Signals for Ionospheric Science) is an instrumentation network initially funded by the DoD DURIP program through the Air Force Office of Scientific Research. This project is constructing a coherent software radio network capable of operating as a flexible multi-role distributed radio science instrument. In particular operational modes involving active and passive multistatic radar imaging, satellite beacon observations of TEC and scintillation, and radio intercept and TDOA applications will be supported. The array will be capable of applying high performance supercomputing using a grid computing architecture to the real time and batch processing requirements of a variety of experiments. The system will also be used to evaluate a wide variety of configurations and techniques for applications involving scientific and defense applications of intercepted signals. Distributed coherent radio arrays are a fundamentally new technology that has been enabled by the wide availability of GPS signals for synchronization and the development of high bandwidth internet technology which allows voltage level RF data to be delivered from the array elements in real time. High performance signal processing focused supercomputing can be applied to data from the array to allow for the real time monitoring and imaging of ionospheric structures using signals of opportunity.
For Space Weather research, the ISIS instruments will permit realtime, continuous monitoring of important parameters (electric field strength, ionospheric irregularities, TEC and ionospheric structure). This information will support climatological studies of both space weather phenomena and the atmospheric and activity conditions associated with them. Multiple data sets will be available to the causative processes when and where they occur.
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