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

RFQ

Request For Quote

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 Design 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

VAT

Value Added Tax

VBat

Voltage of Battery

VCO

Voltage - Controlled Oscillator

VGA

Variable Gain Amplifier

VIES

VAT Information Exchange System

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