Grün, E., M. Baguhl, D.P. Hamilton, J. Kissel, D. Linkert,
G. Linkert and R. Riemann 1995. Reduction of Galileo and Ulysses dust
data. Planet. Space Sci., 43, #8, 941-951.
We describe the reduction procedures which are applied to raw data
from the Galileo and Ulysses Dust Detectors in order to obtain
physical parameters (mass and velocity) of the recorded dust impacts.
Both detectors are impact ionization detectors which measure the
charge released from an impact onto a solid target. From the rise
times of the signals, impact speeds from 2 to 70 km/s can be derived
with an accuracy of about a factor 2. Electronic impact charges are
measured from $10^{-14}$ to $10^{-8}$ C, which refer to a speed
dependent mass range (e.g. 4$\cdot 10^{-15}$ to 4$\cdot 10^{-9}$ g at
20 km/s impact speed). Larger particles are recorded with saturated
signals. Data processing performed both on board the spacecraft and on
the ground is described. The processing allows dust impacts to be
identified and separated from noise events. Supplementary information,
such as impact time and sensor pointing at the time of impact, is also
provided.
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