  The Pioneer 10 and 11 spacecraft yielded very accurate navigation that was
limited only by a small, anomalous frequency drift of their carrier signals
received by the NASA Deep Space Network (DSN). This discrepancy, evident in the
data for both spacecraft, was interpreted as an approximately constant
acceleration and has become known as the Pioneer anomaly. The origin of this
anomaly is yet unknown. Recent efforts to explain the effect included a search
for independent confirmation, analyses of conventional mechanisms, even ideas
rooted in new physics, and proposals for a dedicated mission. We assert that
before any discussion of new physics and (or) a dedicated mission can take
place, one must analyze the entire set of radiometric Doppler data received
from Pioneer 10 and 11. We report on our efforts to recover and utilize the
complete set of radio Doppler and telemetry records of both spacecraft. The
collection of radio Doppler data for both missions is now complete; we are
ready to begin its evaluation. We also made progress utilizing the recently
recovered Pioneer telemetry data. We present a strategy for studying the effect
of on-board generated small forces with this telemetry data, in conjunction
with the analysis of the entire set of the Pioneer Doppler data. We report on
the preparations for the upcoming analysis of the newly recovered data with the
ultimate goal of determining the origin of the Pioneer anomaly. Finally, we
discuss implications of our on-going research of the Pioneer anomaly for other
missions, most notably for New Horizons, NASA's recently launched mission to
Pluto.
