期刊
COLD REGIONS SCIENCE AND TECHNOLOGY
卷 123, 期 -, 页码 53-70出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.coldregions.2015.11.006
关键词
Minimally-invasive melting technology; In-ice dead reckoning; Acoustic positioning; Acoustic reconnaissance; Multi-sensor fusion; Clean sampling
资金
- EnEx project [50NA1206, 50NA1211]
- DLR Space Administration
- Federal Ministry of Economic Affairs and Energy
- US National Science Foundation Office of Polar Programs [ANT-1144178, ANT-1144192]
- Office of Polar Programs (OPP)
- Directorate For Geosciences [1144192] Funding Source: National Science Foundation
The Saturnian moon Enceladus with its extensive water bodies underneath a thick ice sheet cover is a potential candidate for extraterrestrial life. Direct exploration of such extraterrestrial aquatic ecosystems requires advanced access and sampling technologies with a high level of autonomy. A new technological approach has been developed as part of the collaborative research project Enceladus Explorer (EnEx). The concept is based upon a minimally invasive melting probe called the IceMole. The force-regulated, heater-controlled IceMole is able to travel along a curved trajectory as well as upwards. Hence, it allows maneuvers which may be necessary for obstacle avoidance or target selection. Maneuverability, however, necessitates a sophisticated on-board navigation system capable of autonomous operations. The development of such a navigational system has been the focal part of the EnEx project. The original IceMole has been further developed to include relative positioning based on in-ice attitude determination, acoustic positioning, ultrasonic obstacle and target detection integrated through a high-level sensor fusion. This paper describes the EnEx technology and discusses implications for an actual extraterrestrial mission concept. (C) 2015 Elsevier B.V. All rights reserved.
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