next up previous
Next: 1. Introduction

Doppler Wind Experiment DWE
Instrument Description

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. Asmar
NASA 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


DWE Homepage - For further information contact