Relay Support for the Mars Science Laboratory Mission

被引：0

作者：

Edwards, Charles D., Jr. ^{[1
]}

Bell, David J. ^{[1
]}

Gladden, Roy E. ^{[1
]}

Ilott, Peter A. ^{[1
]}

Jedrey, Thomas C. ^{[1
]}

Johnston, M. Daniel ^{[1
]}

Maxwell, Jennifer L. ^{[1
]}

Mendoza, Ricardo ^{[1
]}

McSmith, Gaylon W. ^{[1
]}

Potts, Christopher L. ^{[1
]}

Schratz, Brian C. ^{[1
]}

Shihabi, Mazen M. ^{[1
]}

Srinivasan, Jeffrey M. ^{[1
]}

Varghese, Phillip ^{[1
]}

Sanders, Stephen S. ^{[2
]}

Denis, Michel ^{[3
]}

机构：

[1] CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA

[2] Lockheed Martin Astronaut, Littleton, CO USA

[3] European Space Technol Ctr, D-64293 Darmstadt, Germany

来源：

2013 IEEE AEROSPACE CONFERENCE | 2013年

关键词：

D O I：

暂无

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

The Mars Science Laboratory (MSL) mission landed the Curiosity Rover on the surface of Mars on August 6, 2012, beginning a one-Martian-year primary science mission. An international network of Mars relay orbiters, including NASA's 2001 Mars Odyssey Orbiter (ODY) and Mars Reconnaissance Orbiter (MRO), and ESA's Mars Express Orbiter (MEX), were positioned to provide critical event coverage of MSL's Entry, Descent, and Landing (EDL). The EDL communication plan took advantage of unique and complementary capabilities of each orbiter to provide robust information capture during this critical event while also providing low-latency information during the landing. Once on the surface, ODY and MRO have provided effectively all of Curiosity's data return from the Martian surface. The link from Curiosity to MRO incorporates a number of new features enabled by the Electra and Electra-Lite software-defined radios on MRO and Curiosity, respectively. Specifically, the Curiosity-MRO link has for the first time on Mars relay links utilized frequency-agile operations, data rates up to 2.048 Mb/s, suppressed carrier modulation, and a new Adaptive Data Rate algorithm in which the return link data rate is optimally varied throughout the relay pass based on the actual observed link channel characteristics. In addition to the baseline surface relay support by ODY and MRO, the MEX relay service has been verified in several successful surface relay passes, and MEX now stands ready to provide backup relay support should NASA's orbiters become unavailable for some period of time.

引用

页数：14

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