Satellite Technology Glossary

Satellite Technology Glossary

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There are 173 names in this directory beginning with the letter P.
P OR p
P Microprocessor

P-P OR p-p OR p.p. OR pp
Peak-to-Peak

p.e.p. OR PEP
Peak Envelope Power

p.f.d OR PFD
Power Flux Density

P2MP
Point to multipoint

P2P
Point to point

PA or pA
PA Power Amplifier

PABX
Private Automatic Branch Exchange

PAC
Platform Azimuth Control

Packet
A formatted block of data that is routed between an origin and a destination on a network.

Packet Loss
A type of error on a digital network that occurs when one or more packets of data traveling across a network fail to reach their destination.

PAD
Packet Assembly and Disassembly

PADS
Development Laboratories

PAGEOS
Passive Geodetic Earth-Orbiting Satellite (NASA - USA)

PAL
Phase Alternation Line (TV standard)

PAL-M
PAL System using NTSC Parameters

PALAPA
Domestic satellite system (Indonesia)

PAM
Payload Assist Module

PAM-D
Payload Assist Module D

PAMA
Pulse Address Multiple Access

PAML
Program Authorized Materials List

PANA
Pan-African News Agency

PANAFTEL
Pan-African Telecommunication Network

PanAmSat
Alpha Lyracom Space Communications Satellite Network (USA)

PANDA
Pivot-Assisted Nutation Damping Assembly

PAPM
Pulse Amplitude and Phase Modulation

Par OR PAR
Par OR PAR Parity

Paramp
Parametric amplifier

PAT
Pending Alarms Control Table

PATU
Pan-African Telecommunications Union

PAX
Private Automatic Exchange

PBC
Program Booking Center

PBER
Pseudo Bit Error Rate (pseudo BER)

PBK
Playback Mode

PBM
Perigee Boost Motor

PBS
Public Broadcasting System (USA)

PBX
Private Branch Exchange

PC or pc
PC Personal Computer

PCA
Polar Cap Absorption

pcb OR PCB
Printed Circuit Board

PCE
Power Conditioning Electronics

PCI
Pattern Correspondence Index

PCM
Payload Change Out Room

PCMID
Pulse Command ID

PCU
Power Control Unit

PDA
Predetermined Arc

PDC
Platform Despin Controller

pdf OR p.d.f.
Probability Density Function

PDH
Plesiochronous Digital Hierarchy

PDL
Program Design Language

PDM
(syn.: pulse width modulation)

PDN
Public Data Network

PDR
Preliminary Design Review

PDS
Planned Domestic Services

PDTS
PCM/DSI Test Set

PDUS
Primary Data Receiving Station (Meteosat)

PE
Pictorial Element

PEC
(Marconi SCG)

PEM
Proto Environmental Model

PERT
Project Evaluation and Review Technique

PERUMTEL
Perusahaan Ummum Telekonunikasi (Indonesia)

PES
Post-Ejection Sequencer

PESC
Telephone Engineering Service Circuit

pF OR PF
pF Picofarad (Unit of electrical capacitance) 1 μF (microfarad, one millionth (10−6) of a farad) = 0.000 001 F = 1000 nF = 1000000 pF. 1 nF (nanofarad, one billionth (10−9) of a farad) = 0.001 μF = 1000 pF. 1 pF (picofarad, one trillionth (10−12) of a farad)

PFB
Provisional Frequency Board

PFIX
Power Failure Interrupt

PFM
Protoflight Model

PFO
Pilot Frequency Oscillator

PG
Permanent Glow

PGM
Program

PGP
Pretty Good Privacy

PH
Packet Handler

Phebus
European Experimental Broadcast Television Satellite (also H-Sat)

PHILCOMSAT
Communications Satellite Corporation (Philippines)

Pico
A trillionth

PID
Parameter Identification Directory

PIL
Pilot

PIM
Passive Intermodulation

PIN
Parameter Identification Number / Name

PIP
Payload Integration Plan

PIRC
Pacific and Indian Ocean Restoration Committee

PIU
Payload Interface Unit

PIV
Peak Inverse Voltage

PKM
Perigee Kick Motor

PKO
Project Kick-Off meeting

PL
Parts List

PLD
Phase-Locked Demodulator

PLE
Plesetsk Launch Complex (Russian Federation)

PLL
Phase-Locked Loop

PLS
Phase-Lock system

PLU
Phase Lock Unit

PM
Permanent Magnet

PMA
Permanent Management Arrangements

PMB
Proto Main Body

PMBX
Private Manual Branch Exchange

PMD
Propellant Management Device

PMF
Perigee Motor Firing

PMO
Project Management Office

PMOS
P-channel MOS

PMR
Pressure Modulated Radiometer

PMS
Picturephone Meeting Service

PMU
Propellant Management Unit

PN
Positive-Negative junction

PNM
Pulse Number Modulation

PNP
Positive-Negative-Positive junction

PNPN
Positive-Negative-Positive-Negative

PNS
Primary North-South Stationkeeping

POCA
Point of Closest Approach

POGO
Polar Orbiting Geophysical Observatory

POL
Polarization

Polang
Polarization Angle

PoP
Point of Presence

POR
Pacific Ocean Region

POS
Positioning

pot OR POT
Potentiometer

POTOK
Satellite Network (Russian Federation)

PP
Patch Panel

PPA
Platform Pointing Angle

PPF
Payload Processing Facility

PPI
Plan Position Indicator

ppm OR PPM
PPM Parts Per Million

PPS
Pulses Per Second

PPU
Power Processor Unit

PQM
Proto Qualification Model

PR
Preemptible

PRB
Primary Reference Burst

PRBS
Primary Reference Burst Sequence

Preamp
Preamplifier

PRESTEL
Trade name for the United Kingdom Post Office Corporation's viewdata or telex service (UK)

PRF
Pulse Repetition Frequency

PRFD
Pulse Recurrence Frequency Discrimination

PRI
Primary

PRN
Pseudo-Random Noise

PROC
Processor

Progress
Modified Automatic Soyuz Cargo Spacecraft (Russian Federation)

PROM
Programmable Read Only Memory - silicon chips that are "burnt" according to NSA's KI-23 algorithm. These chips, sometimes referred to as "PROMs" or "Keys", consist of 24 six (6) bit words. Each word is used to select a certain bit in the 63-bit shift register contained within an encryption/decryption device. These chips are loaded into a ground encryption unit (GEU) and onto a S/C decryption unit. When a GEU is instructed to select a location, and then passed a string of 63 bits, the "key" loaded in this location, will cause the 63 bits in this string to be uniquely shifted to different positions.

PROP
Propulsion

PRPM
Primary Power Monitor

PRR
Pulse Repetition Rate

PRT
Primary Reference Terminal

ps OR PS
ps Picosecond

PSC
Perigee Stage Cradle

PSD
Performance Start Date

PSDU
Perigee Stage Driver Unit

PSI OR psi
PSI Paid Service Indication

psia
Pounds Per Square Inch Absolute

psid
Pounds Per Square Inch differential

psig OR PSIG
Pounds Per Square Inch Gauge

PSK
Phase Shift Keying

PSM
Power System Monitor

PSN
Primary North/South Stationkeeping

PSSC
Public Service Satellite Consortium (USA)

PSTN
Public Switched Telephone Network

PSU
Power Supply Unit

PTAT
Private Transatlantic Cable

PTC
Pacific Telecommunications Council

PTD
Proceed-To-Dial (signal)

PTDS
Program Track Data Switch

PTLU
Pre-Transmission Line-Up

PTM
Pulse Time Modulation

PTS
PCM Telemetry Switch

PTT
Post, Telegraph, Telephone (general designation)

PULSAR
Pulsed Sequential Access Relay

PUT
Programmable Uni-junction Transistor

PV
Present Value

PVA
Perigee Velocity Augmentation

PVC
Polyvinyl Chloride

pW
Picowatt

PWM
Pulse Width Modulation

PWMP
Psophometrically Weighted Mean Power

pWp
Picowatt psophometrically weighted

pWp0
Picowatt Psophometrically weighted measured at a point of zero transmission level (0TLP)

PWR
Power