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Station Explorer for X-Ray Timing and Navigation Technology Architecture OverviewThe Station Explorer for X-ray Timing and Navigation Technology (SEXTANT) is a technology demonstration enhancement to the Neutron-star Interior Composition Explorer (NICER) mission. NICER is a NASA astrophysics Explorer Mission of Opportunity, scheduled for launch in mid-2016, that will be hosted on the International Space Station (ISS) via the ExPRESS Logistics Carrier (ELC). By exploiting the regular pulsations emit-ted by the ultra dense remnants of dead stars, which rotate many hundreds of times per second, SEXTANT will, for the first-time, demonstrate real-time, on-board X-ray pulsar-based navigation is a significant milestone in the quest to establish a GPS-like navigation capability available throughout our Solar System and beyond and include the worlds first completely functional system architecture for navigation using X-ray pulsars. In addition, NICER SEXTANT will investigate the suit-ability of these millisecond X-ray pulsars (MSPs) as a Solar System-wide timing infrastructure to rival terrestrial atomic clocks on long timescales. This paper provides a brief overview of the SEXTANT demonstration and the design of the system architecture that consists of the NICER X-ray timing instrument, the SEXTANT flight software and algorithms, supporting ground system, and the GSFC X-ray Navigation Laboratory Testbed (GXLT).
Document ID
20140017423
Document Type
Presentation
Authors
Hasouneh, Monther Abdel Hamid (NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
December 16, 2014
Publication Date
September 8, 2014
Subject Category
Space Radiation
Aircraft Communications and Navigation
Report/Patent Number
GSFC-E-DAA-TN17098
Meeting Information
ION GNSS+(Tampa, Fl.)
Funding Number(s)
OTHER: 2014-596-SEXTANT
CONTRACT_GRANT: NNG06EO90A
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Keywords
Pulsars
X-rays
Navigation

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