International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B2. Istanbul 2004
triggers ice models or classification tasks, performs automatic
geo-location, performs image compression, enhancements,
imagery and model outputs and stores everything in a central
data repository. Load balancing, distributed databases and
parallel computing are used to meet daily processing
requirements and for meeting strict production and delivery
deadlines.
2.2 CIS Archive Subsystem
The CIS Archive Subsystem is composed of a relational
database management system (RDBMS) and a database based
upon the Content Standard for Digital Geospatial Metadata
(CSDGM) as defined by the US Federal Geographic Data
Committee (FGDC). The repository ensures the metadata
access to the records is controlled and constraints are strictly
enforced. The repository is comprised of a catalogue which is
streamlined for a daily production environment and long range
catalogue for archiving and trend analysis. More detailed
discussion about the CIS
2.3 Ice Analysis Subsystem
The Ice Analysis Subsystem is the high-end ISIS workstations
that provide access to all data referenced by the Metadata
repository. Custom tools are developed for sorting, displaying,
and analyzing of data in order to generate electronic and
hardcopy products such as navigation charts and bulletins.
Analysts can enhance imagery and then annotate with text and
line objects to reveal ice characteristics and iceberg targets.
This client/server subsystem is based on high availability
UNIX servers and Windows 2000 clients and makes extensive
use of ERDAS Imagine, ArcGIS and ArcView3 software.
There are three primary components of this subsystem;
e Geospatial Metadata Browser is a visual directory of the
real-time data repository. A user can view metadata
associated with a data object in a tabular format and/or
graphical format showing the coverage 'footprint. A
variety of temporal and spatial data filters are available for
data discovery and drilling. With geospatial metadata the
footprint of the data can be superimposed on a globe
which allows the user to see the geographic context of the
data.
e Image Analysis component provides the user with
multiple image display, analysis using ESRI shared
libraries, mosaics and generation of annotated image
products.
e Data Integration and Product Generation component
integrates GIS data from various sources including model
prognosis, previous or archived analyses, and analyses
from partners and observations from ships, aircraft and
remote operation offices. Topology and product
generation as defined by World Meteorological
Organization (WMO) standards and business rules are
integral within this component.
2.4 Berg Analysis and Prediction Subsystem
The Berg Analysis and Prediction Subsystem is comprised of
four software components; Geospatial Meta Browser, Image
230
Analysis and Iceberg Product Generation. The Browser and
Image Analysis are identical to the Ice Analysis Subsystem.
e Target Detection and Manual Editing Tools: The Target
Detection is running on server as a Data Acquisition
component. The target detection algorithm takes a
RADAR image, detects the possible iceberg targets, and
generates an iceberg message and graphics (a set of
shapefiles). The manual editing tools are used to edit and
valid the detected iceberg targets.
eo Iceberg Product Generation provides capabilities for
validating and correcting iceberg locations received from
aircraft and ships, integrating recently reported icebergs
with Most Recent Observation File (MROF), generating
now cast and prognosis products based on model outputs
and MROF.
2.5 Product Dissemination Subsystem
The Product Dissemination Subsystem receives products
generated by Ice Analysis Subsystem or from other systems,
formats these products based on client profiles and then
delivers via their preferred communication methods such as
FTP, e-mail or Fax. A product database and client standing
orders maintain all deliveries and provide tracking and
performance details. The subsystem supports delivery in
GeoTIFF, MrSid, JPEG2000, PDF, Encapsulated PostScript,
JPEG, GIF, ESRI export files and ERDAS IMG, bundled
Shapefiles or SIGRID-3 (A vector archive format for sea ice
charts) [2003] formats.
2.6 Field Decision Support Subsystem
The Field Decision Support Subsystem is the low-end ICE-VU
workstations that are deployed on Canadian Coast Guard
(CCG) vessels, remote ice operation offices, on board
reconnaissance aircraft, and at the IMSB. ICE-VU workstations
were designed specifically as marine decision support
applications and provide Coast Guard and Ice Service
Specialists with the capability to receive real-time airborne
Synthetic Aperture Radar (SAR)/ Side Looking Airborne Radar
(SLAR) data or to download compressed MrSID or JPEG 2000
imagery and GIS products provided by the IMSB. ICE-VU is
stand-alone system with a real time GPS data feed and has its
own data acquisition, processing and catalogue functions to
enable user to plan navigation routes and deviations.
2.7 Climate Support Subsystem
The Climate Support Subsystem provides access to operational
analysis tools for meteorological and ice trend analysis and
support for analysts producing long range forecasts and
seasonal outlooks. This subsystem has direct access to long
range archive repositories, based on CSDGM Metadata search
criteria. It supports other tools for producing ice climate
products and an annual ice atlas.
2.8 Data Order Subsystem
The Data Order Subsystem provides tools for planning aircraft
flight paths, planning data transmissions during flights to ships
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