  We have extended our previous work to use the Murchison Widefield Array (MWA)
as a non-coherent passive radar system in the FM frequency band, using
terrestrial FM transmitters to illuminate objects in Low Earth Orbit LEO) and
the MWA as the sensitive receiving element for the radar return. We have
implemented a blind detection algorithm that searches for these reflected
signals in difference images constructed using standard interferometric imaging
techniques. From 20 hours of archived MWA observations, we conduct a survey of
LEO, detecting 74 unique objects over multiple passes and demonstrating the MWA
to be a valuable addition to the global Space Domain Awareness network. We
detected objects with ranges up to 977 km and as small as 0.03 m^2 radar cross
section. We found that 30 objects were either non-operational satellites or
upper-stage rocket body debris. Additionally, we also detected FM reflections
from Geminid meteors and aircraft flying over the MWA. Most of the detections
of objects in LEO were found to lie within the parameter space predicted by
previous feasibility studies, verifying the performance of the MWA for this
application.
