Transcript MIOs

Marine Information Objects (MIOs)
Use in ECDIS and Marine SDIs
Relationship to Current/Future IHO Standards
Dr. Lee Alexander, Univ. of New Hampshire
Michel Huet, IHB
MIOs and SDIs
An SDI encompasses the policies,
technologies, standards and human
resources necessary for the effective
collection, management, access,
delivery and utilisation of geospatial
data for a specific jurisdiction or
community (GSDI, 2004)
Marine Information Objects (MIOs)
• MIOs are not contained within nor
are they an integral part of an ENC.
• MIOs are separate, supplementary
information that are displayed in
conjunction with the overall System
ENC.
• Similar in concept to adding radar
and AIS information to an ECDIS
display.
Marine Information Objects (MIOs)
- Chart and navigation-related
information that supplement the
minimum information required by
IMO ECDIS
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Additional, non-mandatory
Not covered by existing standards (e.g., IHO
S-57, IHO S-52, or IEC 61174)
The “everything else”
Points, lines, areas, features, objects
E C D IS C O M P O N E N T S
C o lo r D isp lay
SPD
CSE
XTD
N av S en so rs
(G P S , L O R A N )
SENC
R ad ar/A R P A
G yro co m p ass
C o m p u ter
A IS
D ep th so u n d er
ENC
W ater level
C u rren ts
Ice in fo
U p d ates
MIOs
Types of MIOs
Tides / water levels
Ice coverage
Meteorological
Oceanographic
Marine Habitats
Environmental Protection
Archeological
Vessel Traffic Services (VTS)
Aids to Navigation Status
S-57 ENC Product Specification
• Used by HOs to produce ENC data for
ECDIS
• Current version (3.1) recently updated
(3.1.1) to meet new IMO requirements:
Particularly Sensitive Sea Area (PSSA)
Archipelagic Sea Lanes (ASL)
• Since MIOs are used with ENCs, they
should conform – as much as possible –
to the ENC Product Specification.
Traditional Ice Chart versus ECDIS Presentation
Icebreaker Chart
Source: German Ice Service
Corresponding ECDIS presentation
Ice Object Classes
plus 24 ice attributes
Description
Token
Iceberg
ICEBRG
Ice Drift
ICEDRF
Ice Dynamics
ICEDYN
Floeberg
ICEFLO
Ice Line
ICELIN
Description
Token
Land Ice
ICELND
Iceberg Shape
ICEBSH
Ice Openings
ICEOPN
Coverage Type
ICECVT
Ice Ridge
ICERDG
Floe Size
ICEFSZ
Ice Route
ICERTE
Stage of Melt
ICEMLT
Sea Ice
ICESEA
Snow Cover
ICESCV
Ice Topography
ICETOP
Sea Ice Stage of dev. ICESOD
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Example for presentation in ECDIS
detailed base chart with ice overlay
“Generic” MIO Product Specification
Purpose:
All MIOs will be based on a single,
“generic” MIO Product Specification.
• Will be similar to Additional Military Layers (AMLs)
developed/used by NATO.
• ENC software manufacturers will not have to
develop new software tools to deal with MIOs.
• Existing ECDIS/ECS can read MIOs in the same
manner as ENCs and AMLs.
MIO Encoding Guide
Purpose: Provides detailed guidance
on how specific types of MIOs are
encoded.
Using existing/new S-57 object classes,
attributes, and attribute values:
1.
2.
3.
4.
Provides basis for creation
Describes relationship to real-world entity
Provides criteria for its proper use
Gives specific encoding examples
Approach will be similar to what is being used to encode Inland
ENC data for rivers and inland waterways.
International MIO Development
IHO-IEC Harmonization Group on Marine
Information Objects (HGMIO)
- meets once year; next meeting June 2007 at Univ. of NH
Recommended Procedures for Development
of MIOs (Dec 2004)
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How a competent organization identifies MIO requirements
Information content for MIO category
Development of new S-57 objects & attributes
Colours and symbols (based on IHO S-52)
Test and evaluation
Production and dissemination
Regulatory requirements for use (if needed)
Overall Framework
• S-57 3.1/3.1.1 where applicable
• Use existing S-57 Object Catalogue
• MIO Register for new S-57 objects &
attributes
• “Generic” MIO Product Specification
• MIO Encoding Guide
• Use Open ECDIS Forum (www.openecdis)
for communication and & publication
• Align with future IHO S-100