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The number of active and non active satellites in Earth orbit hasdramatically increased in recent decades, requiring the development of novelsurveillance techniques to monitor and track them. In this paper, we build uponprevious non-coherent passive radar space surveillance demonstrationsundertaken using the Murchison Widefield Array (MWA). We develop the concept ofthe Dynamic Signal to Noise Ratio Spectrum (DSNRS) in order to isolate signalsof interest (reflections of FM transmissions of objects in orbit) andefficiently differentiate them from direct path reception events. We detect andtrack Alouette-2, ALOS, UKube-1, the International Space Station, andDuchifat-1 in this manner. We also identified out-of-band transmissions fromDuchifat-1 and UKube-1 using these techniques, demonstrating the MWA'scapability to look for spurious transmissions from satellites. We identify anoffset from the locations predicted by the cataloged orbital parameters forsome of the satellites, demonstrating the potential of using MWA for satellitecatalog maintenance. These results demonstrate the capability of the MWA forSpace Situational Awareness and we describe future work in this area.

The Development of Non-coherent Passive Radar Techniques for Space Situational Awareness with the Murchison Widefield Array