terrain and obstacle data workshop meetings seminars... · being the regional monitoring of...

Direction Générale de l’Aviation Civile

Ministère de la Transition écologique et solidaire

Terrain and Obstacle

Data Workshop

Experience from implementation in France



• 2006 : Preparation

– Theoretical study (acquisition techniques), gather inputs and identify key-aspects

• 2008 : National Program established

– Joint regulator-ANSP approach, involving all stakeholders

– Overall strategy established (approach per zone, priorities)

– Budget defined and resources set (internal + contracts)

FRANCE TOD IMPLEMENTATION - GENERAL



FRANCE TOD ACQUISITION STRATEGY



• 2007 : Pilot case in Clermont-Ferrand

– Previous version of ICAO SARPs : > 35000 obstacles…

• 2009-2012 : first batch (Toulouse, Bordeaux,

Paris CDG, Strasbourg)

– The contracted company gains experience…

• 2010 : Cross-border case in Bâle-Mulhouse

– Joint DSNA-skyguide project

– Many lessons learned, feeding EUROCONTROL TOD Manual

• 2012-2013 : second batch (Paris Orly,

Marseille, Montpellier, Nice, …)

– New contracting companies, new learning curves

FRANCE TOD IMPLEMENTATION - SURVEYS



LESSONS LEARNED : A PLAN IS KEY



• 2013 : comparison aerial / satellite photogrammetry (Nice)

• 2014 : Project to compile the data in a consolidated DB

– Issues with formats, need to consolidate the specifications

• 2015 : Need to update first results

– Defining an update strategy

• 2018-2019 : Access to data

– Technically : web services, SWIM

– Legally : open access ?

FRANCE TOD IMPLEMENTATION – ADDITIONAL ACTIVITIES



LESSONS LEARNED : BEST PRACTICES

Multi-disciplinary

team

Involve data

experts

Management

Resources

Cost recovery



LESSONS LEARNED : GENERAL

• Getting to grips with the technical aspects

– The 4 areas and the corresponding requirements

– New “element” (Terrain) and new attributes to obstacles

– A data approach (models, identifiers, metadata and attributes, etc.)

• The tip of the iceberg

– Roles and Responsibilities (civil, military, aerodromes, ANSP, CAA)

– Cost allocation and recovery

– National regulation impact

– Maintenance: going beyond initial acquisition



LESSONS LEARNED : ACQUISITION OF DATA

• ONE SIZE DOES NOT FIT ALL !!!

• Area 1

– Terrain data generally available from civil / military national geodetic agencies

– Obstacle data (> 100m above ground) : start from existing data (AIP ENR 5.4 - Air Navigation Obstacles)

• Area 4

– Mostly available with aerodrome authorities and used for PATC

• Area 2

– Collect existing data (Take-off flight path area Obstacle Identification Surfaces; and aerodrome Obstacle Limitation Surfaces)

– Generally require new surveys

• Area 3

– Generally only applied together with Aerodrome Mapping Data acquisition (AMDB)



LESSONS LEARNED : DATA, DATA, DATA !!!

• General

– Data originators may not be familiar with complex data models

– The right attributes and metadata ensure further checks (verification / validation), queries (selection, display, extraction).

– Data quality assumes minimal re-entries or actions on originated data

• Data model importance

– It is the Foundation of the data sets

– It ensures consistency if there are various originators / acquisition campaigns

– It must be interoperable and adapted to local needs



RECOMMENDATIONS – PROJECT MGMT

• Set Project Team and agree on key-points

– Involve regulator and main stakeholders (aerodromes, ANSP, users, national agencies), assign roles and responsibilities

– Get resources (financial + technical competencies – eg data-related)

– Set a program with priorities

• Plan for 3 phases

– Planning, organizing, coordinating, tendering

– Data acquisition, reception and management : a lot more than you can imagine

– Data provision : policy and access rights, technical means

• But don’t forget maintenance

– To be organized as from the beginning

– Use multiple means (local surveillance of obstacles, new data available, scrutiny of regions with major developments)



RECOMMENDATIONS – DATA MANAGEMENT

• Verification and validation

– To be planned at the very beginning (and included in formal arrangements)

– Time-consuming phase

– Implies multiple coordination with originators

– Consider automation (as much as possible)

• Data post-processing

– Filter the data according to themes (areas, height, etc.)

– Consider tailored data provision

• Data publication / provision

– Set the main principles (policy, access rights) – potentially per type (Terrain / Obstacle) and per Area

– Consider technical means and their relationship with AIM core systems



CONSIDERATIONS ABOUT UPDATES

• Detect and track changes

– Use all existing channels (e.g. authorization by CAA for new obstacles)

– Liaise with local air navigation services,

– Use obstacle information from NOTAMs

• Use other data

– Satellite images

– Windmill databases

– Other administrations

• Set the update rate

– Depends on evolution in the area

• Ongoing test in France based on change

detection



OTHER POTENTIAL SHOW-STOPPERS

• Costs – Incremental approach

– Split / share the costs between stakeholders per area of responsibility

– Competitive procurement process and negotiation

• Assignment of responsibilities – CAA to provoke discussions, incentives

being the regional monitoring of progress (workshop, questionnaire) and the expression of user needs

– Specific Task Force between regulators to address this point



CONCLUSIONS • TOD calls for a global approach

– involving all stakeholders, especially regulator, ANSP and aerodromes

– calling for multiple expertise (managerial, legal, technical)

– where all phases (acquisition, data management, data provision) need to be assessed early in the project

• We are learning many lessons from mistakes

– Too much focus on technical aspects

– Data management importance under-estimated

• TOD is a good example of “Going Digital”

– Transition from existing various product-based processes

– Paragdim change: think DATA, not publication

terrain and obstacle data workshop meetings seminars... · being the regional monitoring of...

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