1. Remote sensing Views from space

2. Remote sensing Remote sensing means to view data from a distance Two types of remote sensing: Active Passive

3. Passive remote sensing The most common type of remote sensing It records information that is radiated to it from the Earth’s surface. Measures energy that is naturally available Features Not as useful at night Requires little operating energy

5. Active remote sensing A beam of energy is sent from the satellite and we wait to see what is returned E.g. Sonar Features Obtain measurements anytime Can measure things that the The require massive amounts of energy

7. Canada’s RADARSAT Helps to map our vast country Can sense even the most remote parts of Canada Circles the Earth at 7km / second. It circles the earth 14 per day. This allows coverage of Canada in only three days. http://www.space.gc.ca/ asc/video/070220_rsat2 _hr.wmv http://www.space.gc.ca/ asc/video/070220_rsat2 _hr.wmv

8. RADARSAT -2 RADARSAT and RADARSAT-2 send radar (microwave) signals to earth and record them when they are reflected back. They then retransmit them to a recording station for processing into images Processing stations: Gatineau, Prince Albert, Fairbanks

9. Uses of Remote Sensing Rescue Procedures Agriculture Military Weather Map making Monitoring oceans

10. Textbook Questions P 66-67 Use the text book to Check for understanding 1, 4 Analyze and Apply 1a, c, d