A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
AAAS | American Association for the Advancement of Science |
AAS | American Aeronautical Society |
AC | attitude control |
ACS | Attitude Control System |
ACT | Applied Coherent Technology |
ADC | analog-to-digital converter |
ADCS | Attitude Determination and Control Subsystem |
AE | attitude estimate |
AFTLV | auxiliary fuel tank latch valve |
AGC | automatic gain control |
AGI | Analytical Graphics Inc. |
AGU | American Geophysical Union |
AIAA | American Institute of Aeronautics and Astronautics |
ALAS | advanced liquid axial stage |
AM | Atmosphere and Magnetosphere Group |
AMMOS | Advanced Multi-mission Operating System |
AMNH | American Museum of Natural History |
AO | Asia Oceania Geosciences Society |
AOS | acquisition of signal |
API | application programmers interface |
ApID | application ID |
APL | Applied Physics Laboratory |
APX | alpha, proton, X-ray |
ASC | Astrodynamics Specialist Conference |
ASCE | Aerospace Specialist Conference and Exhibit |
ASCII | American Standard Code for Information Interchange |
ASI | Agenzia Spaziale Italiana (Italian Space Agency) |
ASIC | application specific integrated circuit |
ASME | Aerospace Sciences Meeting and Exhibit |
ASME | Aerospace Sciences Meeting and Exhibit |
AST | Autonomous Star Tracker |
ASTM | American Standards for Testing Materials |
AT | auxilary tank |
ATD | Advanced Technology Demonstration |
ATDF | auxiliary tracking data file |
ATP | Acceptance Test Procedure |
AU | Astronomical Unit |
AWG | American wire gauge |
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BB | breadboard |
BC | bus controller (1553) |
BCU | blockhouse control unit |
BER | Bit Error Rate |
B-frame | body frame |
BGO | bismuth germanate |
BISD | Business and Information Services Department |
BIU | bus interface unit |
BM | bus monitor |
BNL | Brookhaven National Laboratories |
BOA | beginning of allocation |
BOL | beginning of life |
BOM | bill of materials |
BOT | beginning of track |
BSP | board support package |
BTE | bench test equipment |
BVR | block V receiver |
BWG | beam-waveguide |
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C&DH | command and data handling |
CA | closest approach |
CAD/CAM | computer-aided-design/computer-aided-manufacture |
CAS | canned activity sequence |
CASE | Carnegie Academy for Science Education |
CBE | current best estimate |
CCB | change control board |
CCD | critical command decoder |
CCD | charged-coupled device |
CCE | Contamination Control Engineer |
CCGA | Ceramic Column Grid Array |
CCGA | ceramic column grid array |
CCP | Contamination Control Plan |
CCSDS | Consultative Committee for Space Data Systems |
CCSSE | Challenger Center for Space Science Education |
CDF | common data format |
CDR | Critical Design Review |
CE | Contamination Experiment |
CER | cost estimating relationship |
CERES | Center for Educational Resources |
CERT | Computer Emergency Response Team |
CES | Component Environmental Specification |
CFD | constant fraction discriminator |
CFDP | CCSDS file delivery protocol |
CFE | Customer Furnished Equipment |
CG | center of gravity |
CGA | column grid array |
CGI | common gateway interface |
CIW | Carnegie Institution of Washington |
CK | camera kernel (SPICE) |
CLCW | command link control word |
CLTU | command link transfer unit |
CLTU | command link transmssion unit |
CM | configuration management |
CMC | ceramic matrix composite |
CMDIF | command interface |
CMX | Cerium oxide doped borosilicate glass |
COB | chip on board |
CoDR | Conceptual Design Review |
Co-I | Co-Investigator |
COI | Composite Optics, Inc. |
COM | cost of money |
CONTOUR | COmet Nucleus TOUR |
COP | Command Operation Procedure |
CORBA | common object request broker architecture |
CORE | Central Operation of Resources for Educators |
COSPAR | Committee on Space Research |
CoTR | contract technical representative |
COTS | commercial-off-the-shelf |
CP | center of pressure |
cPCI | Compact PCI |
CPFF | cost-plus-fixed-fee |
CPIF | cost-plus-incentive-fee |
CPM | critical path method |
CPP | Cleaning Process Procedure |
CPU | Central Processing Unit |
CPV | common-pressure vessel |
CR | Confirmation Review |
CSC | computer software component |
CSCI | computer software configuration item |
CSR | Concept Study Report |
CTE | coefficient of thermal expansion |
CTT | compatibility test trailer |
CUC | CCSDS Unsegmented Time Code |
CVCM | collected volatile condensable materials |
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DAC | digital to analog converter |
DC | Direct Current |
DC/DC | direct current to direct current (conversion) |
DCMC | Defense Contract Management Command |
DCN | drawing change notices |
DDS | Delta DeSpin |
DEI | Data Exchange Infrastructure (NAVY system) |
DIP | dual in-line package |
DISE | DPU interface selection electronics |
DMA | direct memory access |
DMR | Detailed Mission Requirements |
DOD | depth of discharge |
DOSFS | DOS file system |
DPCM | delta pulse code modulation |
DPCM | differential pixel code modulation |
DPS | Division of Planetary Sciences (AAS) |
DPU | Data Processing Unit (Instrument) |
DSAD | Digital Solar Attitude Detector |
DSI | Decom Systems Inc. |
DSM | Deep Space Maneuver |
DSMS | Deep Space Mission Service |
DSN | Deep Space Network |
DSS | digital Sun sensor |
DTM | Department of Terrestrial Magnetism |
DTO | detailed test objectives |
DWG | Data Working Group |
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E/PO | Education and Public Outreach |
E/q | energy/charge |
ECL | emitter coupled logic |
ECR | Engineering Change Requests |
EDAC | error detection and correction |
EDF | engineering, design, and fabrication |
EDM | electrical discharge machining |
EDR | Engineering Design Review |
EDU | engineering development unit |
EEPROM | electrically erasable programmable read only memory |
EGCS | Experimental GNU Compiler System |
EGSE | electrical ground support equipment |
EGU | European Geosciences Union |
EK | events kernel |
ELV | Expendable Launch Vehicle |
ELVS | Expendable Launch Vehicle Services |
EM | Engineering Model |
EMC | electro-magnetic compatibility |
EMI/RFI | electromagnetic interference/radio frequency interference |
EOA | end of allocation |
EOL | end of life |
EOM | end of mission |
EOT | end of track |
EPL | electrical parts list |
EPPS | Energetic Particle and Plasma Spectrometer (Instrument) |
EPS | Energetic Particle Spectrometer (sensor) |
EPU | Event Processing Unit |
ERCN | Educators' Resource Center Network |
ERT | Earth Received Time |
ESA | European Space Agency |
ESA | electrostatic analyzer |
ESD | electrostatic discharge |
ESD | event sequence diagram |
ESTEC | European Space Research and Technology Centre (ESA) |
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FAQ | frequently asked questions |
FAR | Federal Acquisition Regulation |
FAT | file allocation table |
FBA | fanbeam antenna |
FDP | file delivery protocol |
FEA | finite element analysis |
FECF | Frame Error Control Field |
FEM | Finite Element Model |
FER | frame error rate |
FES | fine error sensor |
FET | field-effect transistor |
FFR | Fabrication Feasibility Review |
FFT | fast Fourier transform |
FIFO | first in, first out |
FIPS | Fast Imaging Plasma Spectrometer (sensor) |
FITS | Flexible Image Transport System |
FM | flight model |
FMEA | failure mode effects analysis |
FOP | Frame Operation Procedure |
FOT | Flight Operations Team |
FOV | field-of-view |
FPA | focal plane assembly |
FPGA | field-programmable gate array |
FPP | fault protection processor |
FPP | floating point processor |
FPU | focal plane unit |
FRU | frequency reference unit |
FTA | fault tree analysis |
FTE | full-time equivalent |
FTP | full-time equivalent |
FU | flight unit |
FU/FS | flight unit/flight spare |
FUV | far ultraviolet |
FW | filter wheel |
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G&A | General and Administrative |
G&C | guidance and control |
GC | Geochemistry Group |
GDS | Ground Data System |
GG | Geology Group |
GLAS | Geoscience Laser Altimeter System |
GP | Geophysics Group |
GPC | gas proportional counter |
GRC | John H. Glenn Research Center at Lewis Field |
GRNS | Gamma-Ray and Neutron Spectrometer (Instrument) |
GRS | Gamma-Ray Spectrometer |
GRT | Ground Received Time |
GS | Ground System |
GSE | ground support equipment |
GSE | Ground System Engineer |
GSEOS | Ground Support Equipment Operating System |
GSFC | Goddard Space Flight Center |
GUI | graphic user interface |
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H/H | high/high |
H/M | high/medium |
HBCUs | Historically Black Colleges and Universities |
HD | hard disk |
HDI | high density interconnect |
HEF | high-efficiency |
HFET | heterostructure field-effect transistor |
HGA | high-gain antenna |
HISSC | High Intensity Solar Simulation Chamber |
HITL | hardware-in-the-loop |
HK | housekeeping |
HPGe | high purity germanium |
HPLVF | high pressure latch valve, fuel |
HPLVO | high pressure latch valve, oxidizer |
HR | heat rejection |
HRG | hemispherical resonator gyroscope |
HRSC | High-Resolution Stereo Camera |
HSKP | housekeeping |
HTTP | hypertext transfer protocol |
HV | high voltage |
HVPS | high voltage power supply |
HW | hardware |
Hz | hertz |
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I&T | integration and test |
I/F | Interface |
I²C | inter-integrated circuit |
IA&T | Integration, Assembly and Test |
IAA | International Academy of Astronautics |
IAC | International Astronautical Congress (an IAA, IAF meeting) |
IAF | International Astronautical Federation |
IC | initial calibration |
ICD | Interface Control Document |
ICLCPM | International Conference on Low-Cost Planetary Missions (an IAA meeting) |
ICS | Ion Composition Subsystem |
IDS | Instrument Data System |
IEEE | Institute of Electrical and Electronic Engineers |
IEM | Integrated Electronics Module |
IFFR | Informal Fabrication Feasibility Review |
IGSE | Instrument Ground Support Equipment |
IK | Instrument Parameter Kernel (SPICE) |
IMEWG | International Mars Exploration Working Group |
IMU | Inertial Measurement Unit |
IPSDU | Instrument Power Switching and Distribution Unit |
IPTF | interprocessor transfer frame |
IR | infrared |
IR&D | Independent Research and Development |
IRD | Interface Requirements Document |
IRR | Integration Readiness Review |
ISI | Integral Systems, Incorporated (EPOCH) |
ISP | integrated structure and propulsion |
ISR | interrupt service routine |
ITAR | International Traffic in Arms Regulations |
ITF | instrument transfer frame |
ITO | indium tin oxide |
IV | current (I) voltage (V) |
IV&V | independent verification and validation |
IYP | in your palm |
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JGR | Journal of Geophysical Research (J. Geophys. Res.) |
JHU | The Johns Hopkins University |
JHU/APL | The Johns Hopkins University Applied Physics Laboratory |
JPC | Joint Propulsion Conference (an AIAA meeting) |
JPL | Jet Propulsion Laboratory |
JTAG | Joint Test Action Group |
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KB | kilobytes |
kbps | kilobits per second |
KSC | Kennedy Space Center |
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L/C | load case |
LAMRC | lossy adaptive multi-resolution compression |
LASP | Laboratory for Atmospheric and Space Physics |
LBNL | Lawrence Berkeley National Laboratory |
LCC | leadless chip carrier |
LCCC | leadless ceramic chip carrier |
LGA | low-gain antenna |
LLNL | Lawrence Livermore National Laboratory |
LPB | Logical Parameter Block |
LPI | Lunar and Planetary Institute |
LPSC | Lunar and Planetary Science Conference |
LRR | Launch Readiness Review |
LSC | launch services contractor |
LSK | leapseconds kernel (SPICE) |
LSoC | low state of charge |
LUT | look-up table |
LV | launch vehicle |
LVA | large velocity adjustment |
LVDS | low voltage differential signaling |
LVPS | Low Voltage Power Supply |
LVS | Low Voltage Sensor |
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MAG | Magnetometer (Instrument) |
MASCS | Mercury Atmospheric and Surface Composition Spectrometer |
MCM | miscellaneous contract materials |
MCM | momentum correction maneuver |
MCP | microchannel plate |
MCP | Monitor and Control Processor (DSN station) |
MDIS | Mercury Dual Imaging System (Instrument) |
MDM | micro "D" metal |
MEM | MESSENGER Education Module |
MEOP | maximum expected operating pressure |
MEPAG | Mars Exploration Program Analysis Group |
MERLIN | Mercury Links |
MESSENGER | MErcury Surface, Space ENvironment, GEochemistry, and Ranging |
MET | mission elapsed time |
MEU | Main Electronics Unit |
MEX | Matlab Executable (file format) |
MG&C | MESSENGER Guidance and Control |
MGA | medium-gain antenna |
MI | minority institutions |
MIA | Monitor Interface Assembly (DSN station) |
MIT | Massachusetts Institute of Technology |
MIWG | Mission Integration Working Group |
MKS | Mortice Kern Systems (software package for configuration control) |
MLA | Mercury Laser Altimeter (Instrument) |
MLI | multilayer insulation |
MLS | microwave limb sounder |
MM | Mission Manager |
MMIC | monolithic microwave integrated circuit |
MOC | Mission Operations Center |
MODC | miscellaneous other direct costs |
MOI | Mercury orbit insertion |
MOPA | master oscillator power amplifier |
MOPS | Mission Operations |
MOS | Mission Operations System |
MOSFET | metal-oxide semiconductor field-effect transistor |
MOT | Mission Operations Team |
MP | main processor (in the IEM) |
MPA | mirror positioning assembly |
MPB | Main Processor Board |
MPCF | Mission Operations Center to Payload Command Filter |
MPG | Mission Planning Group |
MRDF | Material Review Disposition Form |
MRR | Mission Readiness Review |
MSE | math, science, and engineering |
MSE | Mission System Engineer |
msec | millisecond |
MSFC | Marshall Space Flight Center |
MSPSP | Missile System Prelaunch Safety Package |
MSPSP | Missile System Prelaunch Safety Program |
MSSE | Mission Software System Engineer |
MSU | Montana State University |
MTAC | Mid-Atlantic Technology Applications Center |
MTF | modulation transfer function |
MTTF | mean-time-to-failure |
MU-SPIN | Minority University-SPace Interdisciplinary Network |
MUV | middle ultraviolet |
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NA | narrow-angle |
NAC | narrow-angle camera |
NAIF | Navigation and Ancillary Information Facility |
NASA | National Aeronautics and Space Administration |
NASCOM | NASA Communications Network |
NASM | National Air and Space Museum |
NASTRAN | NASA Structural Analysis |
NLS | NASA Launch Systems |
NLT | not later than |
NRE | non-recurring engineering |
NRTS | Network Resources and Training Sites |
NS | Neutron Spectrometer |
NSBRI | National Space Biomedical Research Institute |
NSES | National Science Education Standards |
NSTA | National Science Teachers Association |
NT | New Technology |
NTE | not to exceed |
NTO | Nitrogen Tetroxide |
NTS | National Technical Systems |
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OCLI | Optical Coating Laboratories, Inc. |
OCM | orbit correction maneuver |
OCXO | oven controlled crystal oscillator |
ODBC | open database connectivity |
ODC | other direct costs |
ODF | orbit data file |
OIM | orbit insertion maneuver |
OLS | Orbital Launch Services |
OMB | Office of Management and Budget |
OMS | Orbital Maneuvering Subsystem |
OPAG | Outer Planets Assessment Group |
OPNAV | Optical Navigation |
OS | Operating System |
OSDP | onboard signal and data processor |
OSR | optical solar reflector |
OSS | Office of Space Science |
OWLT | one-way light time |
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P/FR | Problem/Failure Report |
PA | Performance Assurance |
PAA | phased array antenna |
PAE | Performance Assurance Engineer |
PAF | payload attach fitting |
PAIP | Product Assurance Implementation Plan |
PAUX | pressure, auxiliary tank |
PB | Parameter Block |
PCI | Peripheral Component Interconnect |
PCI | peripheral component interconnect |
PCI | peripheral component interface |
PCK | Planetary Constants Kernel (SPICE) |
PCM | phase change material |
PCM | power converter module |
PCS | probability of command shutdown |
PCU | Power Conversion Unit |
PDR | Preliminary Design Review |
PDS | Planetary Data System |
PDU | Power Distribution Unit |
PEM | particle environment monitor |
PEPL | Preliminary Electrical Part List |
PER | Pre-Environmental Review |
PERT | Program Evaluation and Review Technique |
PF | proto-flight |
PFR | problem/failure report |
Phase B | 20 December 1999-30 June 2001 |
Phase C/D | 1 July 2001-30 April 2004 |
Phase E | 1 May 2004-30 September 2011 |
PI | Principal Investigator |
PID | proportional integral derivative |
PIDDP | Planetary Instrument Definition and Development Program |
PIPE | planetary image processing environment |
PLM | periapse lower maneuver |
PLR | Program Level Requirements |
PM | Project Manager |
PMD | propellant management device |
PMT | photomultiplier tube |
POR | power on reset |
POSIX | portable open systems interface extended |
ppb | parts per billion |
PPCI | Power PCI = Power Peripheral Componnet Interconnect |
PPL | Preferred Parts List |
ppm | parts per million |
PPS | pulse per second |
PPSM | Processor/power supply module |
PPT | peak-power tracker |
PQS | Program Quality Summary |
PRA | probabilistic risk assessment {tc "F.3.8 X-ray Spectrometer (XRS)"} |
ProcPAR | Procurement Product Assurance Requirements |
PROM | programmable read only memory |
PS | Project Scientist |
PSD | power spectral density |
PSE | power-system electronics |
PSI | Pressure Systems, Inc. |
PSIA | pounds per square inch absolute |
PSLA | project service level agreement |
PSR | Pre-Ship Review |
PSU | power switching unit |
PTP | programmable telemetry processor |
PWB | printed wiring board |
PWM | pulse-width modulation |
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QARL | Quality Assurance Requirement Level |
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R | Rayleighs |
RAM | random access memory |
RDC | resolver to digital converter |
RE | recurring engineering |
REA | rapid environmental assessment |
REA | rocket engine assembly |
RF | radio frequency |
RFI | Requests for Information |
RFP | Request for Proposal |
RIO | remote input output |
RIU | reasonable order of magnitude |
RP | rapid prototype |
RPN | reverse polish notation |
RS | Radio Science |
RT | remote terminal (1553) |
RTLT | round trip light time |
RTW | Real-Time Workshop |
RTX | real time express |
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S/C | spacecraft |
S/W | software |
SA | Solar Array |
SADA | Solar Array Drive Actuator |
SAIC | Science Applications International Corporation |
SAS | Science Analysis System |
SBLO | Small Business Liaison Office |
SBV | space based visible |
SCA | Subcontract Administrator |
SCCS | Source Configuration Control System |
SCET | spacecraft event time |
SCLK | Spacecraft Clock Kernel (SPICE) |
SCP | spacecraft control processor |
SCPS | Space Communications Protocol Standards |
SCSE | Spacecraft System Engineer |
SCSI | Small Computer System Interface |
SD | Space Department |
SDB | Small Disadvantaged Business |
SDD | software detailed design |
SDP | Software Development Plan |
SDR | Subsystem Design Review |
SDST | small deep space transponder |
SEI | Space Electronics, Incorporated |
SES | Scientific & Engineering Solutions |
SEU | single-event-upset |
SFDU | Standard Formatted Data Unit |
SI | Science Instrument |
SMT | surface mounted technology |
SNAPSAT | Short Notice Accelerated Production SATellite |
SNR | signal-to-noise ratio |
SOC | Science Operations Center |
SOC | state-of-charge (battery) |
SOW | Statement of Work |
SPE | Static Phase Error |
SPICE | spacecraft, planet, instrument, c-matrix, events |
SPIE | Society of Photo-Optical Instrumentation Engineers |
SPK | Spacecraft and Planets Kernel (SPICE) |
SPM | Science Payload Manager |
SQA | Software Quality Assurance |
SQL | sequential query language |
SRAM | static random access memory |
SRD | System Requirements Document |
SRR | System Requirements Review |
SRR/CoDR | System Requirements Review/Conceptual Design Review |
SRS | software requirements specification |
SSC | Science Steering Committee |
SSCM | Small Spacecraft Cost Model |
SSD | solid-state detector |
SSPA | solid-state power amplifier |
SSR | solid-state recorder |
SSRA | solid-state recorder assembly |
ST | Star Tracker |
STE | special test equipment |
STEREO | Solar-Terrestrial Relations Observatory |
STICS | Supra-Thermal Ion Composition Spectrometer |
STOL | Spacecraft Test and Operations Language |
SW | software |
SWG | Science Working Group |
SwRI | Southwest Research Institute, Boulder, Colorado |
SWSE | Software System Engineer |
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TA | true anomaly |
TBD | to be determined |
TCE | thermal coefficient of expansion |
TCM | trajectory correction maneuver |
TCP | transmission control protocol |
TCXO | temperature compensated crystal oscillator |
TDB | Terrestrial Barycentric Time |
TDT | Terrestrial Dynamic Time |
TEC | thermo-electric cooler |
TGA | thermal gravimetric analysis |
TIM | Technical Interchange Meeting |
TIMED | Thermosphere, Ionosphere, Mesosphere, Energetics and Dynamics |
TIU | time interval unit |
TLC | target language compiler |
TLM | telemetry |
TLMIF | telemetry interface |
TMC | total mission cost |
TMDC | total modified direct cost |
TML | total mass loss |
TMOD | Telecommunications and Mission Operations Directorate |
TMR | triple module redundancy |
TOF | time-of-flight |
TQCM | temperature controlled quartz crystal microbalance |
TRIO | temperature remote input output |
TRL | technology readiness level |
TrueFFS | True Flash File System |
TSD | Technical Services Department |
TVC | thrust vector control |
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UART | Universal Asynchronous Receiver Transmitter |
UCB | University of California, Berkeley |
UCSB | University of California, Santa Barbara |
UM | University of Michigan |
US | United States |
USN | Universal Space Net |
USO | Ultra-Stable Oscillator |
UTC | coordinated universal time |
UV | ultraviolet |
UVSN | unpowered Venus swingby navigation |
UVVS | Ultraviolet-Visible Spectrometer (Instrument) |
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V&V | validation and verification |
V/T | voltage/temperature |
VC | virtual channel |
VEXAG | Venus Exploration Analysis Group |
VHDL | VHSIC hardware description language |
VHSIC | very high speed integrated circuit |
VIRS | Visible-Infrared Spectrograph (Instrument) |
VIS | visible |
VLSI | very large scale integration |
VMAG | Vector Magnetometer |
VME | Versa Module Eurocard |
VPT | manufacturer of DC-DC converters |
VSE | Vision for Space Exploration |
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WA | wide-angle |
WAC | wide-angle camera |
WAN | wide area network |
WBS | Work Breakdown Structure |
WCL | wire connection list |
WDT | watch dog timer |
WOSB | women-owned small business |
wrt | with respect to |
WW | wirewrap |
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XGRS | X-ray and Gamma-ray Spectrometer |
XML | extended markup language |
XRS | X-Ray Spectrometer (Instrument) |
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