Alberta Geological Survey

RADARSAT-1 Images

RADARSAT-1 images have been obtained to help map the surficial and structural geology of northern Alberta. The RADARSAT-1 imagery is captured over northern Alberta (north of 55 degrees north latitude) using

Standard Beam 1 (S1) (71 ascending and 70 descending scenes) and
Standard Beam 7 (S7) (65 ascending and 68 descending scenes).

Of the 274 RADARSAT-1 scenes, 250 have been orthorectified. The other 24 RADARSAT-1 scenes were not orthorectified because they are peripheral or complementary images. In addition, 21 scenes have been obtained and orthorectified for part of southern Alberta.

The 250 orthorectified scene images for northern Alberta are tiled to 25 1:250 000 scale NTS map areas. The images for each NTS map area include four images from the four beam positions (S1/S7 and ascending/descending). These four images are then used for principal component analysis to produce 4 principal component images for each NTS map area; i.e., PC1, PC2, PC3 and PC4 images. Each of the four principal components of the 25 tiled NTS areas is then assembled to produce the northern Alberta mosaic of principal component images. AGS makes the value-added images available to the public to allow further processing and interpretation of the RADARSAT-1 image data to obtain geoscience, environmental, forestry or other information.

Navigate through the AGS RADARSAT-1 image data holdings to download the value-added imagery and make simple maps.

The data that can be accessed are summarized as follows:

Availability	View	Make Simple Map	Downloadable in GeoTIFF Format	Downloadable in JPG Format	CDs Can Be Ordered in ER Mapper Format
Orthorectified Scene Images
Standard Beam 1 Ascending	Yes	Yes	No	Yes	No
Standard Beam 1 Descending	Yes	Yes	No	Yes	No
Standard Beam 7 Ascending	Yes	Yes	No	Yes	No
Standard Beam 7 Descending	Yes	Yes	No	Yes	No
NTS Map Area Images
Standard Beam 1 Ascending	Yes	Yes	Yes	Yes	Yes
Standard Beam 1 Descending	Yes	Yes	Yes	Yes	Yes
Standard Beam 7 Ascending	Yes	Yes	Yes	Yes	Yes
Standard Beam 7 Descending	Yes	Yes	Yes	Yes	Yes
Pseudocolour Composite	Yes	No	No	Yes	Yes
Principal Component 1	Yes	Yes	Yes	Yes	Yes
Principal Component 2	Yes	Yes	Yes	Yes	Yes
Principal Component 3	Yes	Yes	Yes	Yes	Yes
Principal Component 4	Yes	Yes	Yes	Yes	Yes
Pseudocolour Composite	Yes	No	No	Yes	Yes
Northern Alberta Mosaic
Principal Component 1	Yes	Yes	Yes	Yes	No
Principal Component 2	Yes	Yes	Yes	Yes	No
Principal Component 3	Yes	Yes	Yes	Yes	No
Principal Component 4	Yes	Yes	Yes	Yes	No
Alberta Mosaic
ScanSAR Narrow Ascending	Yes	Yes	No	No	No
ScanSAR Narrow Descending	Yes	Yes	No	No	No
ScanSAR Narrow Composite	Yes	Yes	No	No	No


Orthorectified scenes of Standard Beam 1, Ascending	Orthorectified scenes of Standard Beam 1, Descending

Orthorectified scenes of Standard Beam 7, Ascending	Orthorectified scenes of Standard Beam 7, Descending