Glossary

ACAS

Airborne Collision Avoidance System

ADS-B

Automatic Dependent Surveillance-Broadcast

ADS-B MOPS

ADS-B Minimum Operational Performance Standards. Evolution: RTCA DO-260 from September 2000, DO-260A and DO-260B in December 2009

ADS-B-NRA

ADS-B Non-Radar Areas

API

Application Program Interface

APN

Access Point Name

BDS

CommB Definition Subfield

CNS

Communication Navigation and Surveillance 

CommA - Short data link uplink message (56 bits)

CommB - Short data link downlink message (56 bits)

CommC - Long data link uplink message (112 bits)

CommD - Long data link downlink message (112 bits)

DHCP

Dynamic Host Configuration Protocol

FIR

Flight Information Region

GNSS

Global Navigation Satellite System

GVA

Geometric Virtual Accuracy

ITP

In-Trail Procedures

MLAT

Multilateration

NAC

Navigation Accuracy Category

NIC

Navigation Integrity Category (DO-260A and DO-260B)

NUC

Navigation Uncertainty Category (DO-260), which can be based on HPL (Horizontal Protection Limit) or HFOM (Horizontal Figure of Merit)

Open Drone ID

https://www.opendroneid.org/

PoE

Power Over Ethernet

SESAR 3 JU

Single European Sky ATM Research 3 Joint Undertaking -  an institutionalised European public-private partnership, established in 2021, to accelerate through research and development the delivery of the Digital European Sky, as part of the SESAR project.

SA

Selective Availability - intentional error in GPS position (not used anymore)

TCAS

Traffic Alert and Collision Avoidance System

UAS ID

Unique Identifier of your drone / Drone Tracker

UAS operator ID

Unique identifier of your organization. It is provided by the Civil Aviation Authority of the country where you want to operate your drones

U-space

U-space is a suite of services for drone operators, that corresponds to the UTM in the USA (UAS Traffic Management)

UTM

UAS Traffic Management (acronym used in the USA), corresponding to the European "U-space"

WAAS

Wide Area Augmentation System is SBAS used in US – 1m horizontal accuracy and 1.5m vertical accuracy. EGNOS in Europe and MSAS in Japan