| M.K. Bird, M. Heyl Radioastronomisches Institut der Universität Bonn Bonn, Germany |
M. Allison NASA Goddard Institute for Space Studies New York NY, USA |
|
| S.W. AsmarNASA Jet Propulsion Laboratory California Institute of Technology Pasadena CA, USA |
D.H. Atkinson Department of Electrical Engineering University of Idaho Moscow ID, USA |
|
| P. Edenhofer, D. Plettemeier, R. Wohlmuth Institut für HF-Technik Universität Bochum Bochum, Germany |
L. Iess Dipartimento Aerospaziale Universitá di Roma "La Sapienza" Rome, Italy |
|
| G.L. Tyler Center for Radar Astronomy Stanford University Stanford CA, USA |
The primary scientific objective of the Doppler Wind Experiment
on the ESA Huygens Probe is to determine the direction and strength
of the zonal winds in the Titan atmosphere.
A height profile of wind velocity will be derived from the
residual Doppler shift of the Probe's radio relay signal to the Cassini
Orbiter, corrected for all known orbit and propagation effects.
Wind-induced motion of the Probe will be measured to a precision better
than 1 m/s commencing with parachute deployment at an
altitude of ca. 160 km down to the surface.
As secondary objectives, this investigation is also capable of
providing valuable information on the Huygens
Probe dynamics (e.g. spin rate and spin phase) during the atmospheric
descent, as well as the Probe's location and orientation up to and
after impact on Titan.
__________________________
M.K. Bird
Radioastronomisches Institut, Universität Bonn
Auf dem Hügel 71, 53121 Bonn, Germany
Submitted for publication in ESA-SP Series
Date of issue: September 13, 1995