Esterhuizen, S. and Asmar, S. W. and De, K. and Gupta, Y. and Katore, S. N. and Ajithkumar, B. (2019) ExoMars Schiaparelli Direct-to-Earth Observation using GMRT. Radio Science, 54 (3). pp. 314-325. ISSN 0048-6604. doi:10.1029/2018RS006707. https://resolver.caltech.edu/CaltechAUTHORS:20190502-094155116
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Abstract
During the ExoMars Schiaparelli separation event on 16 October 2016 and Entry, Descent, and Landing (EDL) events 3 days later, the Giant Metrewave Radio Telescope (GMRT) near Pune, India, was used to directly observe UHF transmissions from the Schiaparelli lander as they arrive at Earth. The Doppler shift of the carrier frequency was measured and used as a diagnostic to identify key events during EDL. This signal detection at GMRT was the only real‐time aliveness indicator to European Space Agency mission operations during the critical EDL stage of the mission.
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| Additional Information: | © 2019 American Geophysical Union. Received 8 AUG 2018; Accepted 9 JAN 2019; Accepted article online 15 JAN 2019; Published online 1 MAR 2019. The authors would like to thank Daniel Firre at ESA for providing data on Schiaparelli. Chad Edwards, Dong Shin, Ben Bradley, Roy Gladden, Shan Malhotra at JPL for helping the team with coordination with ESA, MSL + orbiter predictions, and MAROS/MPX interface. Retzler Andrs for providing the amazing csdr (https://github.com/simonyiszk/csdr) open source package used for signal processing. We thank Swarna K. Ghosh and the staff of GMRT who made these observations possible. The GMRT is run by the National Center for Radio Astrophysics of the Tata Institute of Fundamental Research. The research described in this paper was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. | ||||||||
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| Subject Keywords: | Mars communications; UHF links; Direct to Earth | ||||||||
| Issue or Number: | 3 | ||||||||
| DOI: | 10.1029/2018RS006707 | ||||||||
| Record Number: | CaltechAUTHORS:20190502-094155116 | ||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20190502-094155116 | ||||||||
| Official Citation: | Esterhuizen, S., Asmar, S. W., De, K., Gupta, Y., Katore, S. N., & Ajithkumar, B. (2019). ExoMars Schiaparelli Direct‐to‐Earth observation using GMRT. Radio Science, 54, 314–325. https://doi.org/10.1029/2018RS006707 | ||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||
| ID Code: | 95167 | ||||||||
| Collection: | CaltechAUTHORS | ||||||||
| Deposited By: | Tony Diaz | ||||||||
| Deposited On: | 02 May 2019 17:00 | ||||||||
| Last Modified: | 16 Nov 2021 17:10 |
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