1 October 8, 2015 GIS Day 2015 Geospatial Technologies GPS (global positioning system) –Car GPS systems, yield monitors, smart phones RS (remote sensing) –Satellite or Aircraft imagery (Including UAS) –Your camera GIS (geographic information system) –Combines layers of information –Can include GPS and RS information –Provides analytic tools –ArcGIS, ArcGIS Online, QGIS, GoogleEarth?

2 October 8, 2015 What Is Remote Sensing (RS) Remote sensing is the science of obtaining information about objects or areas from a distance, typically from aircraft or satellites. - oceanservice.noaa.gov/facts/remotesensing.html

3 October 8, 2015 RS Measures Spatial Variations 30 meter or 100 foot pixels 0.3 meter or 1 foot pixels

4 October 8, 2015 RS Measures Spectral Variations Natural Color Color Infrared Red

5 October 8, 2015 The Electromagnetic Spectrum Infrared does not always mean thermal or heat!!! Landsat 8 spectral range

6 October 8, 2015 Reflectance Curves for Some Features Landsat

7 October 8, 2015 RS Measures Temporal Variations Landsat 5 – July 17, 1986Landsat 8 – May 24, 2013

8 October 8, 2015 Natural Color Why Does the “Turf” Appear Different for Football and Baseball Fields In Color IR? Color Infrared Red

9 October 8, 2015 Comparison of Spectral Responses Response from Grass Area Response from Football Field Channel numbers in order of blue, green, red, near infrared red Notice the difference in channel 4 or the near infrared band Use of near infrared was very helpful for camouflage detection during World War II Any thoughts on how else these type of response differences can be used?

10 October 8, 2015 Measure Distance by Pixels Distance between lines Pixel Lines 3280 to 3294 Each pixel is 1 foot on a side

11 October 8, 2015 Useful Web Site Links Freeware Application to View Remote Sensing Data MultiSpec: Available for Macintosh & Windows platforms engineering.purdue.edu/~biehl/MultiSpec/ Web-enabled: mygeohub.org/tools/multispec (will need to register) Source for Image Data IndianaMap: maps.indiana.edu/ County Landsat Images: Aerial high spatial resolution images: gis.iu.edu/isdp_dl/map/m10000.html Geography Educators’ Network of Indiana (GENI): AmericaView Earth Observation Day: Oct. 14, Contact: Larry Biehl -

12 October 8, 2015 Is Remote Sensing a Science? From Landsat 7 scene over Garden City, Kansas; 9/1/2000 eros.usgs.gov/imagegallery/earth-art or an Art?

13 October 8, 2015 IndianaView-GloVis  Graphical Interface for viewing & downloading remote sensing image data  More than 320 Landsat TM scenes of Indiana are available  Link to high resolution aerial images of Indiana stored on IU Spatial Data  Some products like NASS Crop Data Layers IndianaView GloVis link:

14 October 8, 2015 Purdue Terrestrial Observatory Tracking Antenna inside Radome near Purdue Airport