17 radio telescopes observing the Huygens signal coming from 1200.000.000 kilometer distance

C.G.M. van 't Klooster

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

1 Citation (Scopus)


The Huygens Probe landed 14 January 2005 on Titan, the largest moon of Saturn.
During and after the landing, Huygens transmitted data to Cassini, which acted as
data relay station flying nearby Titan. There were two transmission channels. One of the two channels was very stable in frequency: it was locked to an on-board ultra stabile oscillator (USO). Reception of its carrier signal of this transmission from Huygens has been possible with Earth-based radio telescopes at 1200.000.000 kilometre distance. Frequency stability permitted to process signals received at different radio telescopes with Very Long Baseline Interferometry (VLBI) techniques. Exploitation of the latter techniques permits to retrieve the Huygens trajectory through the Titan atmosphere and actual landing location with superb resolution. The scenario for the VLBI experiment is outlined, the direct signal reception at two large radio telescopes is indicated and related descriptive information is given. Post-processing of VLBI data is ongoing at the time of writing in Joint Institute for VLBI in Europe (JIVE). Good progress can be indicated.
Translated title of the contribution17 Radio-Teleskopen Observeren het Huygens Signaal dat komt van een afstand van 1200.000.000 kilometer
Original languageEnglish
Title of host publication2005 5th International Conference on Antenna Theory and Techniques, 24-27 May, Kyiv, Ukraine
Place of PublicationPiscataway
PublisherIEEE Press
Number of pages6
ISBN (Print)0-7803-9261-2
Publication statusPublished - 24 May 2005
Externally publishedYes


Dive into the research topics of '17 radio telescopes observing the Huygens signal coming from 1200.000.000 kilometer distance'. Together they form a unique fingerprint.

Cite this