T2_Geog333_RS_Foundations_2010_v1_small_slides

T2_Geog333_RS_Foundations_2010_v1_small_slides - Geography...

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1 Geography 333: Remote Sensing I Topic 2: Foundations of Remote Sensing 2 What do you think are the foundations of Remote Sensing? 3 Cartography, GIS and Remote Sensing GEOGRAPHY
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2 4 Definitions: Geography Geography seeks to discover the spatial relationships of phenomenon – both physical and human – on the surface of the earth. “Geography tells what is where, why and what of it.” Isaiah Bowman It is the oldest Science… 5 Definitions: Cartography “The art, science, and technology of making maps , together with their study as scientific documents and works of art. In this context it may be regarded as including all types of maps, plans, charts and sections, three-dimensional models and globes representing the Earth or any celestial body at any scale.” - Meynen, 1973 6 Definitions: GIS “an information system that is designed to work with data referenced by spatial or geographic coordinates . In other words, a GIS is both a database system with specific capabilities for spatially-referenced data, as well as a set of operations for working with the data” - Star and Estes 1990
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3 7 Definitions: Remote Sensing “the science and art of obtaining information about an object, area, or phenomenon through the analysis of data acquired by a device that is not in contact with the object, area, or phenomenon under investigation.” - Lillesand and Kiefer, 1994 8 The Senses and Remote Sensing Which of the 5 senses are remote sensing? Touch Smell Taste Hearing/Sound Acoustic RS Sight Optical RS, Microwave RS, Thermal RS Sensing light (Electromagnetic energy) 9 Remote vs. In Situ Sensing Is one better than the other? Do we need both? What am I?
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4 10 Advantages : Increased perspective Generally unobtrusive Broad electromagnetic sensitivity Systematic, unbiased observation Digital extensions Limitations: External noise/interference Often relies on surrogate measures Technical/calibration issues Can be obtrusive 11 Remote Sensing Platforms 12 The Emergence of Geospatial Technology – ‘…science has discovered geography … the business of looking down is looking up…” U.S. Department of Labor "identified geotechnology as one of the three most important emerging and evolving fields, along with biotechnology and nanotechnology." - Nature Magazine - $2 Billion industry in 2002; $30 Billion in 2005
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This note was uploaded on 01/18/2011 for the course GEOG 331 taught by Professor Staff during the Fall '08 term at Kansas.

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T2_Geog333_RS_Foundations_2010_v1_small_slides - Geography...

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