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Introduction & History

Introduction & History. GEO 420 Dr. Garver. 7 elements of remote sensing process. Energy Source (A) Radiation & Atmosphere (B) Interaction with Targets (C) Recording of Energy by Sensor (D) Transmission & Reception (E) Interpretation and Analysis (F) Application (G).

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Introduction & History

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  1. Introduction & History GEO 420 Dr. Garver

  2. 7 elements of remote sensing process • Energy Source (A) • Radiation & Atmosphere (B) • Interaction with Targets (C) • Recording of Energy by Sensor (D) • Transmission & Reception (E) • Interpretation and Analysis (F) • Application (G)

  3. Whatis remote sensing? • remote sensing (v) the science of deriving information about the earth's land, atmosphere and water areas from images acquired at a distance. • Relies on measurement of electromagnetic energy reflected or emitted from the features of interest.

  4. Synoptic Main Entry: syn·op·ticFunction: adjectiveEtymology: Greek synoptikos, from synopsesthai 1 : affording a general view of a whole2 : manifesting or characterized by comprehensiveness or breadth of view3 : relating to or displaying conditions (as of the atmosphere or weather) as they exist simultaneously over a broad area

  5. Tornadoes - F-5 - largest and most powerful classification - winds 300 m/h. TGOES-East weather satellite produces images of most of U. S. every 30 min. in vis and IR wavelengths.

  6. Main Entry: res·o·lu·tion Pronunciation: "re-z&-'lü-sh&n”Function: noun the process or capability of making distinguishable the individual parts of an object, closely adjacent optical images, or sources of light. the point in a literary work at which the chief dramatic complication is worked out.

  7. What are R.S. Images Used For? • Unique view of our planet. • Remote sensing allows us to examine, in unprecedented detail, characteristics of our atmosphere, oceans, and land areas. • Use sensors to view the spectral and spatial relations of objects at a distance.

  8. 1. Atmosphere – weather forecasting

  9. 2. Land Areas

  10. 3. Oceans CZCS

  11. 1850s- balloonists took pictures of ground using newly invented photo-camera. First known aerial photograph was obtained by Gaspard Felix Tournachon (Nadar) from a tethered balloon 1,700-ft. above Paris, France in 1858. Took first photographs in 1853 and in 1858 became the first person to take aerial photographs

  12. Late 1800s – Early 1900s Pigeon fleet used to carry cameras

  13. Aerial photography - reconnaissance tool in WW I and II

  14. 1957 - Soviet Union launched Sputnik I • World's first artificial satellite • Size of a basketball, 183 pounds • Ushered in new political, military, technological, and scientific developments. • Start of the space age and • U.S.-U.S.S.R space race.

  15. First ever U.S. satellite in Earth orbit designed to image and monitor weather. TIROS-1, launched April, 1960 soon after NASA came into existence. Image is considered the official start of remote sensing from satellites.

  16. First non-photo sensors were television cameras mounted on unmanned spacecraft to look at clouds. TIROS-1 Superimposed on cloud patterns is a generalized weather map; this kind of data display soon started to appear in television news broadcasts.

  17. 1970's – matured - repetitive schedule instruments on • Skylab( then Space Shuttle) • Landsat-first satellite dedicated to mapping natural and cultural resources on land and ocean surfaces.

  18. Landsat Missions Timeline

  19. CZCS image of Gulf Stream - April 1982 - warm-core ring.

  20. AVHRR - SST

  21. Remote sensing has become major tool for monitoring earth/atmosphere system. • BIG BUCKS SPENT on applications for environmental and natural resource management.

  22. Huge improvements in; • Computer-based image processing • PC’s can handle large amounts of data • Makes data accessible to universities, govt. agencies, environmental companies, and individuals.

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