1. Landsat (same day) data viewer
GEOG432: Fall 2011
Landsat (same day) data viewer

2. Remote Sensing
"...the collection of information about a surface without direct contact (from a distance) "
… the acquisition and manipulation of planetary images (usually digital and multispectral)

3. BC fires, August 2010

4. ASTER image, Chapman Glacier, Ellesmere Island, Nunavut

5. GlobGlacier workshop: Zermatt, Sept 1, 2010

6. Landsat image, Zermatt 01/09/2010

7. Svalbard, Norway ASTER image and DEM

8. LiDAR DEM – UNBC and Forests for the World

9. Cartography GIS GPS Remote sensing Surveying
Geomatics
Cartography
GIS
GPS
Remote sensing
Surveying
RASTER and VECTOR data:
For remote sensing, A digital image processing system (software) must be RASTER, but will also have vector capabilities; (we use PCI Geomatica)
VECTOR systems will have some raster options, e.g. image display (arcmap)

10. Photos and images Most satellite images are not photos
All photographs are also 'images', but digital images are usually not photographs (no camera, only scanners);
Photographs can become digital by scanning them

11. Analogue and digital
The analogue data unit is the photograph from a camera;
the digital unit is the scene, composed of pixels, created by using a scanner.
Analogue remote sensing involves interpretation, location & feature updating;
digital applications include classification & feature extraction.

12. Milestones in the History of Remote Sensing
19th century
1839 Invention of photography
use of balloons and kites
pigeons
oblique photos (mountain peaks)
Stereo photography -
See this webpage: GIS development

13. 20th century 1910s First use of aerial photography from planes
(World War I: photo interpretation)
1920s Development of photogrammetry for mapping
Military use of radar (World War II)
-> Main aerial photo programs in Canada and others
1950s Use of colour photography and infra-red
Term 'remote sensing' first appeared (Evelyn Pruit)
First reconnaissance satellites: Corona
First weather satellites: Tiros (1960); Nimbus (1964)
(and first digital data transfer)

14. Multispectral image processing: The Landsat Era
Launch of Landsat 1 satellite and the 80metre MultiSpectral Sensor (MSS)
Landsat 4: the 'next generation 30metre sensor': Thematic Mapper (TM) [and Landsat 5 in 1984]
1986 SPOT-1 satellite: 10 and 20metre data (France)

15. 1990s 1990s Other countries' satellites / sensors:
IRS: India (5 metre)
JERS: Japan
ERS: Europe
RESURS: USSR
1995 Radarsat- Canada's first remote sensing satellite
1999 Landsat 7 Enhanced Thematic Mapper (ETM);
Reduction of data cost
removal of data copyright - enabled online data libraries

16. New millennium events Many new sensors including high resolution
2000 Terra satellite: ASTER and MODIS data
2000 High resolution private sector satellites:
Ikonos (2000) and Quickbird (2001)
Worldview launched (2007)- example: Birdnest
GeoEye (2008 – 25cm)
2002 SPOT 5: 2.5 or 5 metres panchromatic resolution
Online viewers
2005 Online image viewers- e.g. google earth
More free image data
2009 Landsat image data archive goes online