pdf document Update on NASA's Laser Communications Relay Demonstration Project

Bernard L. Edwards, David J. Israel

This paper provides an update on NASA's Laser Communications Relay Demonstration Project (LCRD), a joint project between NASA's Goddard Space Flight Center (GSFC), the Jet Propulsion Laboratory, California Institute of Technology (JPL), and the Massachusetts Institute of Technology Lincoln Laboratory (MIT/LL).
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Smallsat communications compatibility test paper 2018 Streamlining Ground Station Network Compatibility Test for Small Satellites

Scott H. Schaire, Steven N. Bundick, Christopher J. Roberts, Leslie L. Ambrose, Jerry L. Mason, Serhat Altunc, Yen F. Wong, Mark R. Lamberson, Joe Baros Jr., Peter B. Celeste

A team of eight subject matter experts at NASA Goddard Space Flight Center (GSFC) completed a Lean Six Sigma project to identify process improvements for the compatibility test process for small satellites planning to use the NASA Near Earth Network (NEN).
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pdf document Education and Outreach at NASA's Goddard Space Flight Center

Harry C. Shaw, Sandra Vilevac, Seema Vithlani

NASA's Space Communications and Navigation (SCaN) Program Office maintains a year-round educational program for undergraduate and graduate students.
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pdf document Automated Spacecraft Communications Service Demonstration Using NASA's SCaN Testbed

Dale J. Mortensen, Christopher Roberts, Richard C. Reinhart

The traditional paradigm for space mission operations relies on inefficient, highly scripted pre-planned activities between space communications & navigation service providers and user ground mission operations centers.
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pdf document NASA's Launch Communications Ground Segment for the 21st Century Florida Spaceport

Christopher J. Roberts, David R. McCormick, Robert N. Tye, Eric J. Harris, David L. Carter, John J. Hudiburg, Patricia H. Peskett, Peter B. Celeste, Patricia R. Perrotto

The National Aeronautics and Space Administration (NASA) Near Earth Network (NEN) Project is implementing a new launch communications ground segment to provide services for the next generation of human and robotic space exploration systems.
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Next-Generation NASA Earth-Orbiting Relay Satellites: Fusing Optical and Microwave Communications Next-Generation NASA Earth-Orbiting Relay Satellites: Fusing Optical and Microwave Communications

David J. Israel, Harry Shaw

NASA is currently considering architectures and concepts for the generation of relay satellites that will replace the Tracking and Data Relay Satellite (TDRS) constellation, which has been flying since 1983. TDRS-M, the last of the second TDRS generation, launched in August 2017, extending the life of the TDRS constellation beyond 2030.
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Sextant X-Ray Pulsar Navigation Demonstration: Initial On-Orbit Results Sextant X-Ray Pulsar Navigation Demonstration: Initial On-Orbit Results

Jason W. Mitchell, Luke B. Winternitz, Munther A. Hassouneh, Samuel R. Price, Sean R. Semper, Wayne H. Yu, Paul S. Ray, Michael T. Wolf, Matthew Kerr, Kent S. Wood

Millisecond pulsars (MSPs) are rapidly rotating neutron stars that appear to pulsate across the electromagnetic spectrum. Some MSPs have long-term timing stability that rivals that of atomic clocks. Pulse arrival phase can be predicted with great accuracy at any reference point in the Solar System through use of a pulsar timing model on a spacecraft.
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High-altitude GPS for lunar missions paper Exploring the Limits of High-Altitude GPS for Future Lunar Missions

Benjamin W. Ashman, Joel J. K. Parker, Frank H. Bauer, Michael Esswein

An increasing number of spacecraft are relying on the Global Positioning System (GPS) for navigation at altitudes near or above the GPS constellation itself - the region known as the Space Service Volume (SSV).
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Planetary Defense Mission Planning Paper Thumbnail Options and Uncertainties in Planetary Defense: Mission Planning and Vehicle Design for Flexible Response

Brent W. Barbee, Megan Bruck Syal, David Dearborn, Kevin Greenaugh, Kirsten M. Howley, Ron Leung, Josh Lyzhoft, Paul L. Miller, Joseph A. Nuth, Catherine Plesko, Bernard D. Seery, Joseph Wasem, Robert P. Weaver, Melak Zebenay

This paper is part of an integrated study by NASA and the NNSA to quantitatively understand the response timeframe should a threatening Earth-impacting near-Earth object (NEO) be identified. The two realistic responses considered are the use of a spacecraft functioning as either a kinetic impactor or a nuclear explosive carrier to deflect the approaching NEO.
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Latest Changes to Laser Communications Relay Demonstration Paper Latest Changes to NASA's Laser Communication Relay Demonstration Project

Bernard L. Edwards, David J. Israel, Seema K. Vithlani

Over the last couple of years, NASA has been making changes to the Laser Communications Relay Demonstration Project (LCRD), a joint project between NASA's Goddard Space Flight Center (GSFC), the Jet Propulsion Laboratory, California Institute of Technology (JPL), and the Massachusetts Institute of Technology Lincoln Laboratory (MIT/LL).
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