|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).
|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).
|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.
|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.
|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.
|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.
|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.
|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).
|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.
|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).