Acronyms and Abbreviations
CCDS
centers for the commercial development of space
CELSS
controlled environmental life support systems
CSI
controls/structures interaction
ERTD
engineering research and technology development
EVA
extravehicular activity
LDEF
long duration exposure facility
FDIR
fault detection, isolation, and recovery
GPS
Global Positioning System
ISPR
international standard payload rack
ISS
International Space Station
IVA
intravehicular activity
LEO
low Earth orbit
Mbps
megabits/second
NASA
National Aeronautics and Space Administration
NIST
National Institute of Standards and Technology
NRC
National Research Council
O&M
operations and maintenance
OSAT
Office of Space Access and Technology
OTA
Office of Technology Assessment
SBIR
Small Business Innovative Research
SSTAC
Space Systems and Technology Advisory Committee
TDRSS
tracking and data relay satellite system
V&V
verification and validation
