Full text: Systems for data processing, anaylsis and representation

  
Canada - LINC) to develop a SMRSS Geomatics 
Information Infrastructure (GII) and Information 
Management Framework (IMF) 
The objectives of LINC for SMRSS are to: 
- fulfil client requirements for access to a 
fully integrated geomatics information 
system with built-in functionality for 
retrieving standard data products and 
generating custom products; 
- increase effectiveness and efficiencies of 
geomatics information acquisition, 
management and dissemination, thereby 
reducing costs and duplication; 
- enhance SMRSS's expertise in the field 
of geomatics data integration and 
dissemination and create a model for 
other organizations to consider in 
expanding this concept at a federal and 
national level, and; 
- develop an industrial capability in 
geomatics infrastructure that can be 
exploited commerciall in sales to 
domestic and foreign organizations 
requiring geomatics technology. 
2. CURRENT DATA HOLDINGS 
SMRSS currently maintains many geomatics data 
holdings. These data holdings are available 
externally as products, or are used internally to 
generate products for end users. Sales of SMRSS 
products are currently in the order of $7M per 
year and are expected to grow. 
SMRSS data holdings are maintained separately 
by data custodians who have the mandate for their 
creation and update. These data will continue to 
be collected and maintained by the appropriate 
Table 1: Geodetic Inventory Contents 
custodians. LINC will make all these geomatics 
data and their associated meta-data available to 
clients in an integrated view. 
Geodetic Data 
Geodetic positional control data are managed in 
an Oracle RDBMS environment as part of the 
National Geodetic Information System (N GIS) 
and are widely used in combination with imagery 
or vector topographic data for geometric 
correction. They are referenced to NADS83, use 
the geographic coordinate system and are encoded 
in ASCII. Privileged clients can already access 
these data holding via network (DATAPAC). 
LINC will provide the tools required to access the 
geodetic data shown in Table 1. 
National Topographic Data Base 
Because of its wide use and general need for 
integration with other data types, National 
Topographic Data Base (NTDB) at 1:50,000 and 
1:250,000 scale should be made available through 
LINC on its first release. NTDB data are well 
documented by an on-line catalogue and an 
off-line data dictionary, are georeferenced to 
NADS3 and use UTM as its coordinate system. 
Satellite Imagery Meta-Data 
Remote sensing imagery in raw form are stored 
digitally but are not available on-line because of 
the massive storage requirements. Radarsat 
International (RSI) has been contracted by 
SMRSS for distribution of processed or derived 
products. Table 2 shows the size and growth of 
the satellite image and meta-data archive. 
  
  
Data Type # Units 
Primary Horizontal Control Networks 8,000 points 
Primary Vertical Control Networks 85,000 points 
Software Products 10 
Geodetic Publication / Standards 50 
Active Control System Data (ACS) N/A 
Global Position System (GPS) orbit data N/A 
Geoid Data N/A 
  
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