Glossary

The purpose of this document is to provide a reference for acronyms and terms used in the Libre Space Foundation community and contributors may cross reference any of the supplied terms.

AB

Abstract

ABCL

As-built Configuration Data List

AC

Alternating Current

ACI

Adjacent Channel Interference

ACS

Attitude Control System

ACU

Antenna Control Unit

ADC

Analog to Digital Converter

ADCS

Attitude Determination and Control System

AFSK

Audio Frequency Shift Keying

AFT

Abbreviated Functional Test

AGC

Automatic Gain Control

AGPL

Affero General Public Licence

AI

Artificial Intelligence

AIT

Assembly Integration and Testing

AIV

Assembly Integration and Verification

AM

Amplitude Modulation

AMSAT

Amateur Satellite

AOCS

Attitude and Orbit Control System

AOS

May refer to: Acquisition Of Signal or, Advanced Orbiting Systems

AoV

Angle of View

API

Application Programming Interface

APT

Automatic Picture Transmission

ARM

Advanced RISC Machines

ARRL

American Radio Relay League

ARTES

Advanced Research in Telecommunications Systems

ASIC

Application-Specific Integrated Circuit

ASW

Address and Synchronization Word

AXI

Advanced eXtensible Interface

B2B

Business to Business

B2C

Business to Consumer

BaLun

Balanced to Unbalanced

BMU

Battery Management Unit

BER

Bit Error Rate

BOM

Bill Of Materials

BR

Brochure

BPF

Band Pass Filter

BPbis

Bundle Protocol

BPSK

Binary Phase Shift Keying

BSD

Berkeley Software Distribution

CAD

Computer Aided Design

CAN

Controller Area Network

CAN-FD

Controller Area Network Flexible Data-rate

CC-BY-SA

Creative Commons Attribution-ShareAlike

CCD

Contract Closure Documentation

CCI

Co-channel Interference

CCSDS

Consultative Committee for Space Data Systems

CDR

Critical Design Review

CEPT

European Conference of Postal and Telecommunications Administrations

CERN

Center for European Nuclear Research

CERN-OHL

CERN Open Hardware Licence

CFDP

CCSDS File Delivery Protocol

CI

Continuous Integration

CI/CD

Continuous Integration/Continuous Development

CIDL

Configuration Item Data List

CNC

Computer numerical control

COLDSUN

COmmunications reLay for Deep-Sea Underwater Networks

COMMS

Communications

CONOPS

Concept of Operations

COTS

Commercial off the Self

CPLD

Complex Programmable Logic Device

CPU

Central Processing Unit

CRC

Cyclic Redundancy Check

CSP

Content Security Policy

CSS

Cascading Style Sheet

CV

Cirriculum Vitae

CVCM

Collected Volatile Condensable Material

CW

Continuous Wave

D

Deliverable

DAC

Digital to Analog Converter

dB

Decibel

DB

Database

DC

Direct Current

DDR

Double Data Rate

DL

Deep Learning

DM

Development Model

DMSA

Deployable Multifuction Solar Array

DP

Data Package

DR

Design Review

DSN

Deep Space Network

DSP

Digital Signal Processing

DTN

Delay and Disruption-Tolerant Networking

DUT

Device Under Test

DUV

Data Under Voice

DVB-RCS

Digital Video Broadcasting - Return Channel via Satellite

DVB-S2

Digital Video Broadcasting - Satellite -Second Generation

Eb/N0

Energy per bit to noise power spectral density ratio

E2E

End-to-End

ECC

Error-correcting code

ECCS

Emergency Communication Cell over Satellite

ECSS

European Cooperation for Space Standardization

EDAC

Error Detection And Correction

EDEN

EGSE Data Exchange Network

EDRS

European Data Relay Satellite System

EDV

Energy Detection Value

EGSE

Electrical Ground Support Equipment

EIRP

Equivalent isotropically radiated power

EM

May refer to: a) Engineering Model b) Electrical Model

EMC

ElectroMagnetic Compatibility

EMI

ElectroMagnetic Interference

eMMC

embedded Multi-Media Controller

EMS

Emergency Management Services

ENBW

Equivalent noise bandwidth

ENOB

Effective number of bits

EO

Earth Observing

EPS

Electrical Power System

Es/N0

symbol energy to noise ratio

ESA

European Space Agency

ESOC

European Space Operations Center

ESR

Executive Summary Report

ESSB

ESA Standardization Steering Board

ESTEC

European Space Research and Technology Center

ETA

Estimated Time of Arrival

EUR

Euro

FAR

Final Acceptance Review

FDIR

Failure Detection, Isolation and Recover

FEA

Finite Element Analysis

FEC

Forward Error Correction

FITS

Flexible Image Transport System

FFT

Fast Fourier Transform

FM

May refer to: Flight Model or, Frequency Modulation

FMC

FPGA Mazzanine Card

FOC

Full Operational Capability

FOSDEM

Free and Open Source Developers European Meeting

FOR

Frame Of Reference

FORTH

Foundation for Research and Technology Hellas

FOV

Field of View

FP

Final Presentation

FPGA

Field Programmable Gate Array

FR

Final Report

FSK

Frequency Shift Keying

G/T

Gain-to-noise-temperature

GB

Giga Byte

GCC

GNU Compiler Collection

GEO

Geostationary Equatorial Orbit

GESTRA

German Experimental Space Surveillance and Tracking Radar

GFSK

Gaussian Frequency Shift Keying

GHz

Giga Hertz

GLONASS

Global Navigation Satellite System

GMAT

General Mission Analysis Tool

GmbH

Gesellschaft mit beschrΓ€nkter Haftung: German for a limited liability company

GNSS

Global Navigation Satellite System

GPCPU

General Purpose CPU

GNU

GNU’s Not Unix

GPL

GNU General Public License

GPS

Global Positioning System

GPSd

Global Positioning System Data

GPSDO

GPS-Disciplined Oscillator

GRAVES

Grand RΓ©seau AdaptΓ© Γ  la Veille Spatiale

gRPC

gRPC Remote Procedure Calls

GS

Ground Station

GSE

Ground Support Equipment

GSPS

Giga Samples per Second

GSoC

Google Summer of Code

GUI

Graphical User Interface

HAL

Hardware Abstraction Layer

HDF5

Hierarchical Data Format

HDL

Hardware Description Language

HEEQ

Heliocentric Earth Equatorial

HEO

Highly Elliplical Orbit

HFT

Hidden Factors as Topics

HPA

High Power Amplifier

HPC

May refer to: a) High-performance Computing b) High Pin Count

HQ

Head-Quarters

HTML

Hyper Text Markup Language

HW

Hardware

I2C

Inter-Integrated Circuit

IaC

Infrastructure as Code

IARU

International Amateur Radio Union

IC

Integrated Circuit

ICT

Information and Communication Technology

IDE

Integrated Development Environment

IDLE

Integrated Development Environment

IEEE

Institute of Electrical and Electronics Engineers

IESL

Institue of Electronic Structure and Laser

IF

Intermediate Frequency

IFFT

Inverse Fast Fourier Tranform

IO

Input/Output

IOCR

In-Orbit Commissioning Review

IOD

In-Orbit Demostration

IOT

Internet Of Things

IQ

In-phase/Quadrature

IP

Implementation Plan

IP3

Third-order intercept point

IPND

IP-based Neighbor Discovery

IPv4

Internet Protocol version 4

IPv6

Internet Protocol version 6

ISI

Intersymbol Interference

ISM

Industrial, Scientific, and Medical

ISON

International Scientific Optical Network

ISS

International Space Station

ITT

Invitation To Tender

ITU

International Telecommunication Union

ITU-R

International Telecommunication Union - Radiocommunications

ITU RR

ITU Radio Regulations

JAXA

Japan Aerospace Exporation Agency

JPL

Jet Propulsion Laboratory

KO

Kick-Off

KOM

Kick-Off Meeting

LCNS

Lunar Communication and Navigation System

LDPC

Low-Density Parity Check

LGPL

GNU Lesser General Public License

LEDSAT

LED-based Small SATellite

LEO

Low Earth Orbit

LEOP

Launch and Early Orbit Phase

LFSR

Linear-Feedback Shift Register

LNA

Low Noise Amplifier

LO

Local Oscillator

LOS

May refer to a) Line of Sight b) Loss Of Signal

LRPT

Low-Resolution Picture Transmission

LRR

Laser Retro Reflector

LSF

Libre Space Foundation

LSTM

Long Short-Term Memory

LSTN

Library Space Technology Network

LTAN

Local Time of the Ascending Node

LVDS

Low Voltage Differential Signalling

LVTTL

Low Voltage TTL

M2M

Machine To Machine

MAIV

Manufacturing, Assembly, Integration and Verification

MB

Mega Byte

MCC

Mission Control Center

MCMC

Markov Chain Monte Carlo

MCOR

Mission Close-Out Review

MCT

Mission Control Software

MCU

Micro-Controller Unit

MDS

Minimum Detectable Signal

MEMS

Micro-Electro-Mechanical Systems

MEO

Medium Earth Orbit

MEX

Mars Express

MGSE

Mechanical Ground Support Equipment

MHz

Mega Hertz

MIB

Mission Information Base

MIMO

Multiple-Input, Multiple-Output

MIT

Massachusetts Institute of Technology

ML

Machine Learning

MLRR

Modulated Laser Retro-Reflector

MoM

Minutes of Meeting

MOOC

Massive Open Online Course

MPL

Mozilla Public License

MPPT

Maximum Power Point Tracker

MPR

Monthly Progress Reports

MRG

Microelectronics Research Group

MRR

Modulated Laser Retro-Reflector

MS

Milestone

MSK

Minimum Shift Keying

MSPS

Mega Samples per Symbol

MSS

Mobile Satellite Service

NASA

National Aeronautics and Space Administration

NEC2

Numerical Electromagnetics Code Version 2

NF

Noise Figure

NIST

National Institute of Standards and Technology

NORAD

North American Air Defense Command

NRZ-M

Non-Return-to-Zero Mark

NS-3

Network Simulator 3

NSL

NearSpace Launch

NTE

Nanosatellite Tracking Experiment

OBC

On-Board Computer

OBSW

On-Board Software

OCS

Orbit Control System

ODM

Orbit Data Message

OEM

May refer to: a) Original Equipment Manufacturer b) Orbit Ephemeris Message

OOL

Out-of-Limits

OOT

Out-of-Tree (GNURadio Out-of-tree module)

OpenEMS

Open Source Energy Management System

OpenSatCom

Open Satellite Communications

OPS

(Space) Operations

OS

Operating System

OS3

Open Source Satellite Simulator

OSCW

Open Source Cubesat Workshop

OSDLP

Open Space Data Link Protocol

OSI

May refer to a) Open Systems Interconnection b) Open Source Initiative

OTA

Optical Tube Assembly

OTP

One time programmable

PA

Power Amplifier

PAPR

Peak to Average Power Ration

PC

May refer to: a) Project Coordinator b) Personal Computer

PCB

Printed Circuit Board

PCDU

Power Conditioning and Distribution Unit

PCIe

Peripheral Component Interconnect Express

PDM

Product Data Management

PDR

Preliminary Design Review

PL

Processing Logic

PLL

Phased Locked Loop

PLM

Product Lifecycle Management

PMIC

Power management integrated circuits

PNT

Positioning, Navigation and Timing

PoC

Proof of Concept

PoE

Power over Ethernet

POSIX

Portable Operating System Interface for Unix

PQ

PocketQube

PSK

Phase-Shift Keying

PSLV

Polar Satellite Launch Vehicle

PV

Photovoltaics

PWM

Pulse-width Modulation

PWP

Project Web Page

QA

Quality Assurance

QPSK

Quadrature Phase Shift Keying

QSFP

Quad Small Form-factor Pluggable transceiver

R&D

Research & Development

RAAN

Rigth Ascension of the Ascending Node

RAM

Random Access Memory

RD

Reference Document

REST

Reprentational State Transfer

RF

Radio Frequency

RFMC

RF Mezzanine Card

RFSoC

RF System on Chip

RHCP

Right Hand Circular Polarized

RILDOS

Radio with Identity and Location Data for Operations and SSA

RPC

Remote Procedure Calls

RR

Requirements Review

RSSI

Received Signal Strength Indication

RTC

Real Time Clock

RTOS

Real Time Operating System

RW

Reaction Wheel

RX

Receiver/Reception

SANA

Space Assigned Numbers Authority

SATA

Serial Advanced Technology Attachment (hard disk interface)

SATCOM

Satellite Communication

SatNOGS

Satellite Network Open Ground-Station

SAW

Surface Acoustic Wave

SBC

Single Board Computer

SC

Spacecraft

SDA

Space Data Association

SDLS

Space Data Link Security

SDN

Software Defined Networking

SDR

May refer to: a) Software Defined Radio b) System Desing Review

SGP4

Standard General Perturbations Satellite Orbit Model 4

SEE

Single-event effects

SESP

Simulation for European Space Programmes

SEU

Single-event upset

SFCG

Space Frequency Coordination Group

SFPT

Satellite Functions and Performance Test

SHF

Super High Frequency (3-30 GHz)

SIDLOC

Satellite Identification and Localisation

SiDs

Simple Downlink Share Convention Protocol

SigMF

Signal Metadata Format

SIMD

Single Instruction, Multiple Data

SLE

Space Link Emulator

SMA

SubMiniature version A

SMT

Surface Mount Technology

SNR

Signal-to-noise ratio

SNS

Satellite Network Simulator

SNS3

Satellite Network Simulator

SoC

System On a Chip

SOS

Space Operation Service

SoW

Statement of Work

SPENVIS

Space Environment, Effect and Education System

SPI

Serial Peripheral Interface

SPOC

Spacecraft Operation Center

SPP

Space Packet Protocol

SQNR

Signal-to-quantization-noise ratio

SRF

Software Reuse File

SRS

Space Research Service

SSA

Space Situational Awareness

SSN

Space Surveillance Network

SSO

Sun-Synchronous Orbit

SST

Space Surveillance and Tracking

STM

Space Traffic Management

SW

Software

SWR

Standing Wave Radio

TAS

Technical Achievement Summary

TBD

To Be Described

TC

Tele-command

TC&C

Tele-command & Control

TCP

Transmission Control Protocol

TCXO

Temperature-compensated crystal oscillator

TDM

Tracking Data Message

TDMA

Time Division Multiple Access

TDP

Technical Data Package

TID

Total Ionizing Dose

TJD

Truncated Julian Day

TLE

Two Line Element set

TM

Telemetry

TML

Total Mass Loss

TMR

Triple Mode Redundancy

TMTC

Telemetry & Tele-control

TN

Technical Note

TRL

Technology Readiness Level

TRR

Test Readiness Review

TT&C

Telemetry, Tracking and Command

TTL

Transistor-transistor logic

TVAC

Thermal Vacuum Chamber

TWT

Travelling-wave Tube

TX

Transmit

UART

Universal Asynchronous Receiver - Transmitter

UAS

Unmanned Aircraft Systems

UHF

Ultra High Frequency (0.3 - 3 GHz)

UI

User Interface

UNOOSA

United Nations Office for Outer Space Affairs

USB

Universal Serial Bus

USLP

Unified Space Link Protocol

USRP

Universal Software Radio Peripheral

UTC

Universal Time Co-ordinated

UX

User Experience

V&V

Verification and Validation

VBat

Voltage of Battery

VCO

Voltage - Controlled Oscillator

VGA

Variable Gain Amplifier

VHF

Very High Frequency (30 - 300 MHz)

VNA

Vector Network Analyzer

VOLK

Vectorized Library of Kernels

VHDL

VHSIC Hardware Description Language

VPL

Visual Programming Language

WBS

Work Breakdown Structure

WP

Work Package

WPD

Work Package Description

WRC

World Radiocommunication Conferences

YAML

YAML Ain’t Markup Language

ZMQ

ZeroMQ