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Algorithms for MUOS Capacity Analysis
— 29-31, Oct 2007
The Mobile User Objective System (MUOS) for satellite communications (SATCOM) is being developed to
provide important beyond line-of-sight (BLOS) communications for tactical military users.
There is a keen interest in the MUOS data rate capacity as it relates to the available system
bandwidth. A set of wide-band code-division multiple access (WCDMA) waveforms will be used to
share bandwidth among users and so multiple access interference (MAI) must be considered in
evaluating system capacity. In addition, frequency reuse is accomplished based on the
employment of multiple satellite beams. While this improves the system capacity, it
complicates the supportability analysis because adjacent beam interference can increase the MAI and,
as a result, can impact system capacity. The purpose of this paper is to develop algorithms
that determine supportability for a given set of links in the MUOS system…
Authors: Jim Marshall, Dr. Lynam Hazelton, Parimal Pal, Per Kullstam, Anne Grigals
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Early Navigation Results for NASA’s MESSENGER Mission to Mercury
— 23-27 Jan 2005
MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) mission is being flown as
the seventh mission in NASA’s Discovery Program. The MESSENGER mission is led by the
principal investigator, Sean C. Solomon, of the Carnegie Institution of Washington. The
project is managed by and the spacecraft was built and is operated by The John Hopkins University
Applied Physics Laboratory. Navigation for the spacecraft is provided by the Space Navigation
and Flight Dynamics Practice of KinetX, Inc., a private corporation…
15th AAS/AIAA Space Flight Mechanics Conference – AAS 05-176
Authors: B. Williams, A. Taylor, E. Carranza, J. Miller, D. Stanbridge, B. Page, D. Cotter, and L.
Efron – KinetX, Inc., Space Navigation and Flight Dynamics, Simi Valley, California; R.
Farquhar, J. McAdams, and D. Dunham – The Johns Hopkins University Applied Physics Laboratory,
Laurel, Maryland
- Configurable Spacecraft Control Architectures for On-Orbit Servicing and Upgrading of Long Life Orbital Platforms — 06-13 Mar 2004
Large orbital platforms provide unique and essential space-based capabilities for science, intelligence, and defense missions potentially supporting very large aperture imagers, antenna farms, SARs, radiometers and other systems.
In order to provide maximum return on the investment required, it is essential to have a significant autonomous on-orbit servicing, upgrade and repair capability such that the platform can operate successfully for decades and have new platforms added to it…
2004 IEEE Aerospace Conference Proceedings
Authors: James Ross, Honeywell DSES, Glendale, Colorado;
David Musliner, Honeywell Laboratories, Minneapolis, Minnesota;
Thomas Kreider, Honeywell DSES, Glendale, Colorado;
Jack Jacobs, Honeywell DSES, Glendale, Colorado;
Michael Fisher, KinetX, Inc., Tempe, Arizona
- The B612 Mission Design — 23-26 Feb 2004
This paper describes a mission proposed by the B612 Foundation to demonstrate the feasibility of docking a spacecraft with a small asteroid and applying a controlled, steady thrust to it in order to measurably alter the asteroid's orbit and rotation pole by the year 2015.
The target would be a rocky 200-meter asteroid with a mass of about 10 billion kilograms that does not pose any impact threat to the Earth…
AIAA 2004 Planetary Defense Conference: Protecting Earth from Asteroids — AIAA 2004-1448
Authors: B. G. Williams, KinetX, Inc., Space Navigation and Flight Dynamics, Simi Valley, California;
D. D. Durda, Southwest Research Institute, Boulder, Colorado;
D. J. Scheeres, Department of Aerospace Engineering, The University of Michigan, Ann Arbor, Michigan
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