| ACRONYM |
DESCRIPTION |
| P |
PILOT (NASA/MEMBER OF THE SHUTTLE CREW WHO PILOTS THE OV) |
| P & C |
PERFORMANCE AND CONTROL |
| P & C |
PROGRAMMING AND CONTROL |
| P & M |
PARTS AND MATERIALS DOCUMENT |
| P(F) |
PROBABILITY OF FALSE STAR OBSERVATION |
| P(M) |
PROBABILITY OF MISSED STAR OBSERVATION |
| p.m. |
POST MERIDIEN (AFTERNOON) |
| P/B |
PLAYBACK |
| P/DU |
PROCESSING DISTRIBUTION UNIT (WITH VIP THE CURRENT SPS) |
| P/L, PL |
PAYLOAD |
| P/L-EX |
PAYLOAD EXECUTIVE |
| P/N |
PART NUMBER |
| P/N |
PSEUDO NOISE |
| P/S |
PLANNING & SCHEDULING |
| P/SEC |
PULSES PER SECOND |
| P3 |
PRIMAVERA PROJECT PLANNER |
| PA |
PERFORMANCE/PRODUCT ASSURANCE |
| PA |
POWER AMPLIFIER |
| PA |
PAYLOAD ACCOMMODATIONS |
| PA/CSC |
PAYLOAD ACCOMMODATION/CARRIER SUPPORT CENTER |
| PAA |
PAYLOAD ACCOMMODATION ASSEMBLY |
| PAAS |
PLATFORM ARCHIVE & ANALYSIS SYSTEM |
| PAB |
PROGRAMMING AND ANALYSIS BRANCH (NESDIS/NODC, WASHINGTON, DC) |
| PACE |
PHYSICS AND CHEMISTRY EXPERIMENTS |
| PACOR |
PACKET PROCESSOR |
| PACS |
POLAR ACQUISITION CONTROL SYSTEM |
| PACS |
POINTING AND CONTROL SYSTEM |
| PAD |
PROJECT APPROVAL DOCUMENT |
| PAE |
PAYLOAD ATTACH EQUIPMENT |
| PAF |
PAYLOAD ATTACH FITTING |
| PAI |
PRODUCT ASSURANCE INSTRUCTION |
| PAIP |
PERFORMANCE ASSURANCE IMPLEMENTATION PLAN |
| PAL |
PALLET (NASA/SPACELAB PALLET) |
| PALAPA |
INDONESIAN COMMUNICATIONS SATELLITE (SYNCHRONOUS SATELLITE) |
| PAM |
PAYLOAD ASSIST MODULE (NASA/UPPER STAGE SHUTTLE AND DELTA ELV) |
| PAM |
PULSE AMPLITUDE MODULATION |
| PAM-D |
PAYLOAD ASSIST MODULE-D |
| PAML |
PROGRAM AUTHORIZED MATERIALS LIST |
| PAPL |
PROGRAM APPROVED/AUTHORIZED PARTS LIST |
| PAPL |
PROJECT APPROVED PARTS LIST |
| PAR |
PHOTOSYNTHETICALLY ACTIVE RADIATION |
| PAR |
PERFORMANCE ASSURANCE REQUIREMENTS |
| PAR |
PLATFORM ACCEPTANCE REVIEW |
| PAS |
PLATFORM ANALYSIS SYSTEM |
| PAT |
PRELIMINARY ACCEPTANCE TEST |
| PB |
PHYSICS BRANCH (NESDIS/ORA, CAMP SPRINGS, MD) |
| PB |
PLAYBACK |
| PB |
PETABYTE |
| PB1 |
PARALLEL BINARY 1 TIME CODE (NASA) |
| PB4 |
PARALLEL BINARY 4 TIME CODE (NASA) |
| PBC |
PERFORMANCE BASED CONTRACT |
| PBL |
PLANETARY BOUNDARY LAYER |
| PC |
POWER CONVERTER |
| PC |
PRINTED CIRCUIT |
| PC |
PERSONAL COMPUTER |
| PCA |
PHYSICAL CONFIGURATION AUDIT |
| PCAM |
PROGRAM COMPLEXITY ANALYSIS METHODOLOGY |
| PCB |
PROGRAMMABLE CIRCUIT BREAKER |
| PCC |
PROGRAM CORRESPONDENCE CONTROL |
| PCC |
PLATFORM CONTROL CENTER |
| PCC |
PAYLOAD CHECKOUT CELLS |
| PCDS |
PILOT CLIMATE DATA SYSTEM |
| PCG-II |
PROTEIN CRYSTAL GROWTH (NASA) |
| PCHS |
PROGRAM CONTROL HIERARCHY SYSTEM |
| PCM |
PULSE CODE MODULATION |
| PCM |
PROGRAM CONFIGURATION MANAGER |
| PCN |
PROCUREMENT CONTROL NUMBER |
| PCP |
PLATFORM CONTROLS PROCESSOR |
| PCR |
PAYLOAD CHANGEOUT ROOM |
| PCR |
PAYLOAD CERTIFICATION REVIEW |
| PCU |
PAYLOAD/POWER/PROCESSOR CONTROL UNIT |
| PCU |
POWER CONTROL/CONVERSION UNIT |
| PD |
PULSE DISCRETE COMMAND TYPE |
| PD |
POSITION DESCRIPTION |
| PD/U |
PROCESSING/DISTRIBUTION UNIT |
| PDB |
PRIMARY DATA BRANCH (NESDIS/NCDC, ASHEVILLE, NC) |
| PDB |
PRODUCT DEVELOPMENT BRANCH (NESDIS/NODC, WASHINGTON, DC) |
| PDCA |
POWER DISTRIBUTION AND CONTROL ASSEMBLY |
| PDF |
PROGRAMMABLE DATA FORMATTER (NASA) |
| PDI |
PAYLOAD DATA INTERLEVER |
| PDL |
PROGRAM DESIGN LANGUAGE |
| PDL |
PROCESSOR DATA LOAD |
| PDM |
PULSE DURATION MODULATION |
| PDMP |
PROTECT DATA MANAGEMENT PLAN |
| PDR |
PRELIMINARY DESIGN REVIEW |
| PDR |
PROCESSED DATA RELAY (GVAR RF LINK) |
| PDRD |
PROGRAM DEFINITION AND REQUIREMENTS DOCUMENT |
| PDRS |
PAYLOAD DEPLOYMENT AND RETRIEVAL SYSTEM (NASA/USED WITH PFTA) |
| PDS |
PLANETARY DATA SYSTEM |
| PDUS |
PRIMARY DATA USER STATION |
| PE |
PRIMITIVE EQUATION (NMC MODEL FROM 1966) |
| PEB |
PERFORMANCE EVALUATION BOARD |
| PEC |
PARTICULATE ELEMENTAL CARBON |
| PEM |
PARTICLE ENVIRONMENTAL MONITOR |
| PEP |
POLYNOMIAL ERROR PROTECTION (NASA) |
| PEP |
PYROTECHNIC ENABLE PLUG |
| PER |
PRE-ENVIRONMENTAL REVIEW |
| PERD |
PROJECT ELEMENT REQUIREMENTS DOCUMENT |
| PERT |
PERFORMANCE EVALUATION AND REVIEW TECHNIQUE |
| PERT |
PERFORMANCE EVALUATION AND RECORD TRACKING |
| PERT |
PROGRAM EVALUATION REVIEW TECHNIQUE |
| PETR |
POST ENVIRONMENTAL TEST REVIEW |
| PETS |
PAYLOAD ENVIRONMENTAL TRANSPORTATION SYSTEM |
| PETS |
PERFORMANCE EVALUATION AND TEST SYSTEM |
| PF |
PLATFORM |
| PFD |
POWER FLUX DENSITY |
| PFEG |
PACIFIC FISHERIES ENVIRONMENTAL GROUP (NMFS, MONTEREY, CA) |
| PFM |
PROTOFLIGHT MODEL |
| PFTA |
PAYLOAD FLIGHT TEST ARTICLE (NASA USED WITH PDRS) |
| PG & D |
PRODUCT GENERATION & DISTRIBUTION (GIMGSP SECTION) |
| PGGA |
PERMANENT GPS GEODETIC ARRAY |
| PGHM |
PAYLOAD GROUND HANDLING MECHANISM |
| PGP |
PERFECT GOES PROJECTION |
| PGS |
POWER GENERATION SUBSYSTEM |
| PGS |
PRODUCT/PROJECT GENERATION SYSTEM |
| PGSE |
PAYLOAD GROUND SUPPORT EQUIPMENT |
| PGT |
PROCEDURE GENERATION TASK/TEAM |
| PHR |
PAYLOAD HAZARD REPORT |
| PHS & T |
PACKING, HANDLING, STORAGE, AND TRANSPORTATION |
| PHST |
PACKAGING, HANDLING, STORAGE, AND TRANSPORTATION |
| PI |
PRINCIPAL INVESTIGATOR |
| PI |
PHOTO INTERPRETATION |
| PI |
POSITION INDICATOR |
| PIA |
PROBLEM ANALYSIS |
| PIA |
PAYLOAD/PROJECT INTERFACE ADAPTOR |
| PIA |
PROJECT INITIATION AGREEMENT |
| PIA |
PRELIMINARY/PROGRAM/PROJECT INITIATION AGREEMENT |
| PIA |
PROJECT INTERFACE ADAPTER |
| PIB |
PARALLEL INPUT BUFFER |
| PICF |
PRINCIPAL INVESTIGATOR COMPUTING FACILITY |
| PID |
PARAMETER IDENTIFICATION (ID) |
| PID |
PROCESSED INSTRUMENT DATA |
| PID |
PROPORTIONAL, INTEGRAL, AND DIFFERENTIAL GAIN |
| PIES |
POST-INSTALLATION ENGINEERING SUPPORT |
| PIND |
PARTILLE IMPACT NOISE DETECTION |
| PIONEER |
NASA PIONEER VENUS SERIES (REMOTE SENSING & DIRECT MEASUREMENT) |
| PIOS |
PRODUCTION INVENTORY OPTIMIZATION SYSTEM |
| PIP |
PAYLOAD INTEGRATION PLAN |
| PIPOR |
PROGRAM FOR INTERNATIONAL POLAR OCEAN RESEARCH |
| PIR |
POES INCIDENT REPORT |
| PIU |
POWER INTERFACE UNIT |
| pixel |
PICTURE ELEMENT (X IMPLIED) |
| Pixels |
PICTURE ELEMENTS |
| PKM |
PERIGEE KICK MOTOR |
| pk-pk |
PEAK TO PEAK |
| PL |
PARTS LIST |
| PLAT |
PLATFORM |
| PLB |
PULSE LOAD BUS |
| PLB |
PAYLOAD BAY |
| PLC |
PROPELLANT LOADING CART |
| PLDS |
PILOT LAND DATA/DEVELOPMENT SYSTEM (NASA) |
| PLF |
PAYLOAD FAIRING |
| PLH |
PAYLOAD HANDLING |
| PLL |
PHASE LOCK LOOP |
| PLM |
PAYLOAD MANAGEMENT |
| PLO |
PHASE-LOCKED OSCILLATOR |
| PLT |
PLATFORM |
| PLTR |
PROGRAM-LEVEL TECHNICAL REQUIREMENTS |
| PM |
PHASE MODULATION |
| PM |
PRODUCT MONITOR |
| PM |
PROJECT MANAGER |
| PM |
PROPULSION MODULE |
| PM |
PREVENTIVE MAINTENANCE |
| PM & P |
PARTS, MATERIALS AND PROCESSES |
| PMA |
PROGRAM MANAGEMENT ASSESSMENT |
| PMAD |
POWER MANAGEMENT AND DISTRIBUTION |
| PMB |
PERFORMANCE MEASUREMENT BASELINE |
| PMC |
PRESSURE MODULATED CELL |
| PMC |
PERMANENTLY MANNED CAPABILITY |
| PMCU |
PROPULSION MODULE CONTROL UNIT |
| PMD |
PROPELLANT MANAGEMENT DEVICE |
| PMEA |
PROPULSION MODULE ELECTRONICS ASSEMBLY |
| PMEL |
PACIFIC MARINE ENVIRONMENTAL LABORATORY (ERL, SEATTLE, WA) |
| PMF |
PERIGEE MANEUVER FIRING |
| PMF |
PRODUCT MASTER FILE |
| PMF |
PERIGEE MOTOR FIRE |
| PMG |
PLASMA MOTOR GENERATOR (NASA) |
| PMI |
PARTS MATERIALS INSPECTION |
| PMICS |
PROGRAM MANAGEMENT INFORMATION CONTROL SYSTEM |
| PMIS |
PROJECT MANAGEMENT INFORMATION SYSTEM |
| PMO |
PROGRAM MANAGEMENT OFFICE |
| PMP |
PARTS, MATERIALS AND PROCESSES |
| PMP |
PAYLOAD MOUNTING PLATE |
| PMP |
PROJECT MANAGEMENT PLAN |
| PMPCB |
PARTS, MATERIALS AND PROCESSES CONTROL BOARD |
| PMPSR |
PAYLOAD MULTIPURPOSE SUPPORT ROOM |
| PMR |
PRESSURE MODULATED RADIOMETER |
| PMR |
PROJECT MONTHLY REVIEW |
| PMS |
POWER MANAGEMENT SOFTWARE |
| PMS |
PERFORMANCE MEASUREMENT/MANAGEMENT SYSTEM |
| PMS |
POLAR METEOROLOGICAL SATELLITE |
| PMS |
PLATFORM/PROJECT MANAGEMENT SYSTEM |
| PMSR |
PRELIMINARY MONTHLY STATUS REVIEW |
| PMT |
PHOTOMULTIPLIER TUBE |
| PMT |
PROJECT MANAGEMENT TEAM |
| PN |
PSEUDO-RANDOM NOISE |
| PN |
PART NUMBER |
| PNP |
PRELIMINARY NETWORK PLAN |
| PO |
PURCHASE ORDER |
| PO |
PLANETARY OBSERVER (NASA/SPACECRAFT TO STUDY MARTIAN ATMOSPHERE) |
| POB |
PARALLEL OUTPUT BUFFER |
| POC |
POINT OF CONTACT |
| POCC |
PAYLOAD/PLATFORM/PROJECT OPERATIONS CONTROL CENTER (NASA) |
| POD |
PROTON OMNIDIRECTIONAL DETECTOR |
| POD |
PRECISE ORBIT DETERMINATION |
| PODS |
PILOT OCEAN DATA SYSTEM (JPL) |
| PODS |
PRECISE ORBIT DETERMINATION SYSTEM (FREQUENTLY WITH PPS) |
| POEM-1 |
POLAR ORBITING EARTH MISSION-1 |
| POEMS |
POSITRON ELECTRON MAGNET SPECTROMETER |
| POES |
POLAR OPERATIONAL ENVIRONMENTAL SATELLITES |
| POF |
PINHOLE OCCULTER FACILITY |
| POGO |
POLAR-ORBITING GEOPHYSICAL OBSERVATORY |
| POL |
PAINTS, OILS AND LUBRICANTS |
| POLAR |
POLAR (NASA/POLAR AURORAL PLASMA PHYSICS) |
| POLEX |
POLAR EXPERIMENT (SOVIET LED 1975-80) |
| POLLDER |
POLARIZATION & DIRECTIONALITY OF REFLECTANCES |
| POOMSCOB |
POLAR ORBITING METEOROLOGICAL SATELLITE COORDINATING BOARD AF/NOAA |
| POP |
PROGRAM OPERATING PLAN |
| POP |
POLAR ORBITING PLAFORM (USUALLY DESIGNATED AS NASA OR ESA PLATFORM) |
| POP |
PERPENDICULAR TO ORBIT PLANE |
| POPS |
POWER-ON-PROCESSOR SOFTWARE |
| POSIX |
PORTABLE OPERATING SYSTEM INTERFACE FOR COMPUTER ENVIRONMENTS |
| POV |
PROXIMITY OPERATIONS VEHICLE |
| POWG |
PAYLOAD OPERATIONS WORKING GROUP |
| PP |
PROJECT PLAN |
| p-p |
PEAK-TO-PEAK |
| PPA |
PORRO PRISM ASSEMBLY |
| PPE |
PHASE PARTITIONING EXPERIMENT (NASA EXPERIMENT) |
| PPF |
PAYLOAD PREPARATION/PROCESSING FACILITY |
| PPI |
PLAN POSITION INDICATOR (USUALLY RADAR) |
| PPL |
PREFERRED PARTS LIST |
| PPL |
PLANT PHYSIOLOGY LABORATORY |
| ppm |
PARTS PER MILLION |
| PPPL |
PLANETARY PHYSICAL PROCESSES LABORATORY |
| PPR |
PAYLOAD PREPARATION ROOM |
| PPS |
PRECISE POSITION SYSTEM (NASA/NPOP-1 & 2, FREQUENTLY WITH PODS) |
| pps |
PULSES PER SECOND |
| PPS |
PAYLOAD POINTING SYSTEM |
| PPS |
PORTABLE PLATFORM SIMULATOR |
| PPS & C |
PROGRAMMING PRACTICE, STANDARDS, AND CONVENTIONS |
| PPSU |
PAYLOAD PROPULSION SERVICING UNIT |
| PPSU |
PROPELLANT/PRESSURANT SERVICE UNIT |
| PPTS |
PROPELLANT PRESSURE TEST SET |
| PPU |
PAD POWER UP BOX |
| PQCM |
PARTICULATE QUARTZ CRYSTAL MICROBALANCE |
| PQE |
PROGRAM QUALITY ENGINEER |
| PQSR |
PROJECT QUARTERLY STATUS REVIEW |
| PQT |
PRELIMINARY QUALIFICATION TEST |
| PR |
PROBLEM REPORT |
| PR |
PROCUREMENT REQUEST |
| PR |
PRECIPITATION RADAR |
| PRACA |
PROBLEM REPORTING AND CORRECTIVE ACTION |
| PRCB |
PROGRAM REQUIREMENTS CHANGE BOARD |
| PRD |
PROGRAM REQUIREMENTS DOCUMENT |
| PREOBS |
OATS' OBSERVATION PREPROCESSOR |
| PRESS |
PRESSURE |
| PRHO |
PROGRAM REVIEW HANDOUT |
| PRL |
PARTS REQUIREMENT LIST |
| PRL |
POLAR RESEARCH LABORATORIES |
| PRM |
PROTOFLIGHT MODEL |
| PROFS |
PROTOTYPE REGIONAL OBSERVING AND FORECASTING SERVICE (ERL) |
| PROM |
PROGRAMMABLE READ ONLY MEMORY |
| PROP |
PROPULSION |
| PRR |
PRELAUNCH READINESS REVIEW |
| PRR |
PRELIMINARY/PROGRAM REQUIREMENTS REVIEW |
| PRT |
PROTABLE RADIATION THERMOMETER |
| PRT |
PLATINUM RESISTANCE THERMOMETER |
| PRW |
PITCH REACTION WHEEL |
| PS |
PERFORMANCE SPECIFICATION |
| PS |
POWER SUPPLY |
| PS |
PAYLOAD SPECIALIST (NASA/SHUTTLE) |
| PS |
PRESSURE SOUNDING |
| PS ANG |
SUN ANGLE (FROM AXIS OF INSTRUMENT) |
| PSAT |
PREDICTED SITE ACQUISITION TABLE |
| PSB |
PHYSICAL SCIENCE BRANCH (NESDIS, CAMP SPRINGS, MD) |
| PSB |
PRODUCT SYSTEMS BRANCH (NESDIS, SUITLAND, MD) |
| PSC |
PLATFORM SUPPORT CENTER |
| PSC |
PREMODULATION SIGNAL CONDITIONER |
| PSCN |
PROGRAM SUPPORT COMMUNICATIONS NETWORK |
| PSD |
POWER SPECTRAL DENSITY |
| PSD |
PARTIAL SHUNT DRIVE |
| PSE |
POWER SUPPLY ELECTRONICS |
| PSF |
POINT SPREAD FUNCTION |
| PSG |
PROGRAM STEERING GROUP |
| PSG |
POLAR STEREOGRAPHIC |
| psi |
POUNDS PER SQUARE INCH |
| psia |
POUNDS PER SQAURE INCH ABSOLUTE |
| psig |
POUNDS PER SQUARE INCH (GAUGE) |
| PSK |
PHASE SHIFT KEYING |
| PSM |
PROJECT SUPPORT MANAGER |
| PSN |
PLANO SPAZIALE NAZIONALE (ITALIAN NATIONAL SPACE PLAN) |
| PSP |
PAYLOAD/PROGRAM SUPPORT PLAN |
| PSP |
POLAR STEREOGRAPHIC PROJECTION |
| PSR |
PRE-SHIP/SHIPMENT REVIEW |
| PSS |
PORTABLE SIMULATION SYSTEM |
| PSS |
PAYLOAD SPECIALIST STATION |
| PSS |
POLAR SUBSURFACE SOUNDER |
| PSSS |
POWER SURVIVAL SAFE STATE |
| PST |
POINT SOURCE TRANSMITTANCE |
| PST |
PLANETARY SPECTROSCOPY TELESCOPE |
| PT |
PLAIN TEXT (UNENCRYPTED OR RED) |
| PT |
PRESSURIZED TANK |
| PTA |
PROPELLANT TANK ASSEMBLIES |
| PTC |
PITCH TORQUE/TORQUING COIL |
| PTF |
PAYLOAD TEST FACILITY |
| PTFE |
POLYTETRAFLUOROETHYLENE (TEFLON) |
| PTPS |
PUMPED TWO-PHASE SYSTEM |
| PTS |
PNEUMATIC/POWER TEST SET |
| PTT |
PLATFORM TRANSMITTER TERMINAL |
| PTTS |
PLATFORM TEST AND TRAINING SYSTEM |
| PTU |
PORTABLE TEST UNIT |
| PUB |
POWER-UP BOX |
| PUF |
PRODUCT USER FILE |
| PUR |
PAYLOAD UNDER REVIEW (NASA) |
| PV |
PHOTOVOLTAIC |
| PVA |
PERIGEE VELOCITY AUGMENTATION |
| PVB |
PERFORMANCE VERIFICATION BOARD |
| PVP |
PROJECT VERIFICATION PLAN |
| PVS |
PLATFORM VERIFICATION SPECIFICATION |
| PVT |
PERFORMANCE VERIFICATION TEST |
| PVTOS |
PHYSICAL VAPOR TRANSPORT OF ORGANIC SOLIDS (NASA) |
| PWA |
PROJECT WORK AUTHORIZATION |
| PWM |
PULSEWIDTH MODULATION |
| PWM |
PULSE-WIDTH-MODULATED |
| PWMP |
PRINTED WIRE MASTER PATTERN |
| PWS |
PERFORMANCE WORK STATEMENT |
| PY |
PROGRAM YEAR |
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