Computer Science – Sound
Scientific paper
Apr 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.543..187h&link_type=abstract
Proceedings of the 37th ESLAB Symposium `Tools and Technologies for Future Planetary Exploration', Noordwijk, The Netherlands (E
Computer Science
Sound
Scientific paper
The ROSETTA/ESA probe will rendezvous Comet 67P/Churyumov-Gerasimenko and launch a Lander at the nucleus surface. The CONSERT instrument will perform the sounding of the comet nucleus by measuring electromagnetic wave propagation from the Lander to the Orbiter throughout the comet nucleus in order to determine its internal structures and to deduce information on its composition. CONSERT is an original concept of spaceborne transmission radar based on the propagation throughout the nucleus while the classical radars are based on the reflection. This instrument fulfils three functions: - A chronometer to measure the propagation delay, - An imager based on the multipath propagation and - A radiometer to estimate the wave attenuation. The instrument design and the absence of calibration channel require specific signal processing and calibration protocol to characterize these 3 functions. In this paper, we review the instrument, its objectives and its time transponder structure. Then we present the philosophy of the calibration. In particular we present the results of the ground calibration and the planed infly calibration. To end, we show the first result of the ground experiments.
Goutail J.-P.
Herique Alain
Kofman Wlodek
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