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 supplyied 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

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

API

Application Programming Interface

APT

Automatic Picture Transmission

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

CANFD

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

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

CSS

Cascading Style Sheet

CW

Continuous Wave

D

Deliverable

DAC

Digital to Analog Converter

DB

Database

DC

Direct Current

DL

Deep Learning

DM

Development Model

DP

Data Package

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

E2E

End-to-End

ECC

Error-correcting code

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

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

FEA

Finite Element Analysis

FEC

Forward Error Correction

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

FOV

Field of View

FP

Final Presentation

FPGA

Field Programmable Gate Array

FR

Final Report

FSK

Frequency Shift Keying

GCC

GNU Compiler Collection

GEO

Geostationary Equatorial Orbit

GESTRA

German Experimental Space Surveillance and Tracking Radar

GFSK

Gaussian Frequency Shift Keying

GLONASS

Global Navigation Satellite System

GMAT

General Mission Analysis Tool

GNSS

Global Navigation Satellite System

GPCPU

General Purpose CPU

GPL

GNU General Public License

GPS

Global Positioning System

GPSDO

GPS-Disciplined Oscillator

GRAVES

Grand Réseau Adapté à 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

HTML

Hyper Text Markup Language

HW

Hardware

I2C

Inter-Integrated Circuit

IARU

International Amateur Radio Union

IC

Integrated Circuit

ICT

Information and Communication Technology

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

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

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

LVDS

Low Voltage Differential Signalling

LVTTL

Low Voltage TTL

M2M

Machine To Machine

MCMC

Markov Chain Monte Carlo

MCU

Micro-Controller Unit

MDS

Minimum Detectable Signal

MEO

Medium Earth Orbit

MEX

Mars Express

MGSE

Mechanical Ground Support Equipment

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

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

NEC2

Numerical Electromagnetics Code Version 2

NF

Noise Figure

NIST

National Institute of Standards and Technology

NORAD

North American Air Defense Command

NS-3

Network Simulator 3

NSL

NearSpace Launch

NTE

Nanosatellite Tracking Experiment

OBC

On-board Computer

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)

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

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

PLL

Phased Locked Loop

PLM

Product Lifecycle Management

PMIC

Power management integrated circuits

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

QA

Quality Assurance

QPSK

Quadrature Phase Shift Keying

QSFP

Quad Small Form-factor Pluggable transceiver

R&D

Research & Development

RD

Reference Document

RHCP

Right Hand Circular Polarized

RF

Radio Frequency

RFMC

RF Mezzanine Card

RFSoC

RF System on Chip

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

RW

Reaction Wheel

RX

Receive

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

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

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

TDMA

Time Division Multiple Access

TDP

Technical Data Package

TID

Total Ionizing Dose

TJD

Truncated Julian Day

TLE

Two Line Element set

TM

Telemetry

TMR

Triple Mode Redundancy

TMTC

Telemetry & Tele-control

TN

Technical Note

TRL

Technology Readiness Level

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

UTC

Universal Time Co-ordinated

UX

User Experience

V&V

Verification and Validation

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