What is the AIRM?
Download the white paper AIRM at a glance
The AIRM is a reference
The ATM Information Reference Model (AIRM) is the ATM system-wide reference vocabulary for defining ATM information.
Using the AIRM promotes semantic interoperability - the ability to exchange information with unambiguous, shared meaning. The AIRM vocabulary therefore supports interoperability improvements throughout the ATM network.
For example: one system may use the term “aerodrome” and another may use “airport-heliport”. The AIRM allows the different systems to identify these as the same thing.
For example: when a system receives information about a “runway” from different authorized providers it knows the systems are talking about the same thing. It is able to seamlessly process the information and, depending on the application context, add and combine information from other authorized information sources.
As a reference model, the AIRM says nothing about the technologies. It can be used as the basis for many developments within the ATM community.
The AIRM is an ATM-wide vocabulary
The AIRM captures the knowledge on information and data that is exchanged within the ATM community by organisations, systems and services.
It captures ATM specific terms and definitions from an agreed set of ICAO Annexes and documents, and global information exchange models such as the Aeronautical Information Exchange Model (AIXM), Flight Information Exchange Model (FIXM), ICAO Meteorological Information Exchange Model (IWXXM).
It also includes key terms from international standards to allow the ATM community to share a common understanding on e.g. the geometry and temporal aspects of information.
The following subjects are covered by the AIRM.
|Aircraft||Information about the aircraft used for a flight.|
|Airspace Infrastructure||Information about airspace volumes and infrastructure.|
|Air Traffic Operations||Information on all ATM activities required to implement air traffic by enabling flights.|
|Base Infrastructure||Information about the identity, location, description, and configuration of the infrastructure assets including physical facilities and systems, terrain and obstacles.|
|Common||This contains information on ATM specific topics that are used by more than one other subject areas.|
|Flight||Information about a specific flight.|
|Meteorology||Meteorological observation, report, analysis, forecast and any other statement relating to existing or expected meteorological conditions.|
|Surveillance||Information about a flight’s position, vector, identity, and short-term flight path intent as reported by ground or on-board sensors.|
|Stakeholders||Information about individuals, identifiable groups and organisations that either operate in ATM or have relationships with ATM.|
The AIRM is a model
The AIRM is modelled using the Unified Modeling Language (UML) but is available in other formats: a searchable online tool and in HTML format.
The AIRM takes a layered approach to modelling the information constructs, moving from a "top-down" ATM-wide model to a model that is focussed on the information that is exchanged by users and providers of information. The AIRM has several components in order to achieve its aims in supporting its stakeholders.
- The AIRM Contextual Model contains reusable building blocks originating from international standards such as ICAO, ISO, W3C; those building blocks contain definitions of primitive and other data types, for re-use in the AIRM as well as in its aligned models.
- The AIRM Conceptual Model provides a reference model for the ATM information concepts for operational experts. Moreover, it contains entities and semantic relationships relevant to the ATM operational discourse and concerns.
- The AIRM Logical Model provides a reference model of the ATM data concepts for service architects and system implementers; it contains the data elements necessary to model the shared information of ATM.
The AIRM is a support
The AIRM can be used in many contexts and by different users.
Information architects use the AIRM as a reference for the definitions used in information exchange models, and in aligning the definitions collaboratively across multiple communities.
Service architects use the AIRM during service design and development activities to define the information service payload.
Operational experts use the AIRM in support of operational concept development and in defining collaborative workflows enabled by SWIM. They also use the AIRM when defining information exchange requirements (IERs) as part of service identification activities.
Standard developing organisation may use the AIRM as a reference in creating a data catalogue, a data dictionary, or a standard information service payload.
The AIRM is a community resource
The AIRM is built by and for the ATM community.