geomatics Table 2: CCRS Image Archive 
vailable to Satellite/Sensor # of scenes(Dec. 93) # added/year 
Landsat 1,2,3 MSS 85,000 0 
Landsat 4,5 MSS & TM 380,000 30,000 
SPOT 1,2,3 PLA & MLA 640,000 100,000 
MOS 1,1B MESSR 35,000 6,000 
1anaged in NOAA AVHRR raw data 5,000 5,000 
art of the GEOCOMP AVHRR Products 1,000 1,000 
m (NGIS) ERS-1 SAR (passes) 3,000 1,000 
h imagery Seasat SAR (passes) 200 0 
geometric Radarsat SAR (passes) (to be launched in 1995) 0 1,000 
\D83, use 
e encoded 
dy access CCRS browse data are framed in the same manner Canadian Geographical Names Data Base 
PAC). as the inventory information, i.e. according to the 
standard framing system of the platform, WRS for The Canadian Geographic Names Database 
access the Landsat, GRS for SPOT, etc.. Where there is no (CGNDB) is in digital form and stored on-line in 
standard framing system, such as for NOAA a RDBMS (Oracle). 
AVHRR and ERS-1, the passes are arbitrarily 
broken into scenes. The meta-data for Seasat are Work has continued to create a 'reduced' Internet 
provided in passes. For multispectral scanners accessible copy of the CGNDB. The database 
need for three bands are used. Browse scenes are will reside on a completely independent server, an 
National decimated to approximately 500 pixels by 400 Internet node, which will be separated from the 
),000 and lines. These decimated scenes are compressed production CGNDB by a 'firewall' machine. The 
e through using a standard JPEG lossy process. These copy database, also an Oracle RDBMS, will be 
are. well compressed products are usually less than 50 accessible by two distinct user groups: the first, 
| and an kilobytes in size. members of the Canadian Permanent Committee 
enced to 
system. 
Table 3: Small Scale Map - Nameslists Available from Geographical Names Section 
Scale Map Corresponding NAIS Map No. No. 
re stored Title English French Bilingual Rec. Bytes 
cause of 12M Atlantic MCR 77 MCR 77F 2800 417647 
Radarsat Provinces 
cted by Quebec MCR 42 MCR 42F 4000 596000 
derived Ontario MCR 39 MCR 39F 3230 481270 
rowth of Prairie MCR 27 MCR 27F 4404 656196 
Provinces 
British MCR 3 MCR 3F 2732 407068 
Columbia 
Yukon and 
—À Northwest 
LL Territories 
- East Half MCR 134 MCR 134F 2361 351789 
- West Half. — MCR 135 MCR 135F 2143 319307 
1:7.5M Canada MCR 128 MCR 128F 1673 | 249277 
1:12.5 M Canada MCR 137 MCR 137F MCR 138 714 106386 
1:20 M Canada MCR 132 MCR 132F MCR 139 314 146786 
1:30 M Canada MCR 133 MCR 133F MCR 136 128 19072 
E * A universal names list is provided for each map title at a given scale, regardless of the language 
  
  
  
  
  
version of the printed map. 
223