  The number of active and non active satellites in Earth orbit has
dramatically increased in recent decades, requiring the development of novel
surveillance techniques to monitor and track them. In this paper, we build upon
previous non-coherent passive radar space surveillance demonstrations
undertaken using the Murchison Widefield Array (MWA). We develop the concept of
the Dynamic Signal to Noise Ratio Spectrum (DSNRS) in order to isolate signals
of interest (reflections of FM transmissions of objects in orbit) and
efficiently differentiate them from direct path reception events. We detect and
track Alouette-2, ALOS, UKube-1, the International Space Station, and
Duchifat-1 in this manner. We also identified out-of-band transmissions from
Duchifat-1 and UKube-1 using these techniques, demonstrating the MWA's
capability to look for spurious transmissions from satellites. We identify an
offset from the locations predicted by the cataloged orbital parameters for
some of the satellites, demonstrating the potential of using MWA for satellite
catalog maintenance. These results demonstrate the capability of the MWA for
Space Situational Awareness and we describe future work in this area.
