Concepts and Foundations Concepts and Foundations of Remote Sensingof Remote Sensing

Remote Sensing DefinitionRemote Sensing Definition

Remote Sensing DefinitionRemote Sensing Definition

► ScienceScience and and artart of obtaining information about an of obtaining information about an object, area, or phenomenon through the analysis of object, area, or phenomenon through the analysis of data acquired by a device that is not in contact with data acquired by a device that is not in contact with object, area, or phenomenon.object, area, or phenomenon.

► It usually relies on measurement of electromagnetic It usually relies on measurement of electromagnetic energy reflected or emitted from the features of interest.energy reflected or emitted from the features of interest.

What is Remote Sensing?What is Remote Sensing?

►remote sensor or sensor (n)remote sensor or sensor (n) instruments that acquire remotely sensed instruments that acquire remotely sensed

informationinformation

►more definitionsmore definitions http://www.ccrs.nrcan.gc.ca/ccrs/learn/terms/definition/http://www.ccrs.nrcan.gc.ca/ccrs/learn/terms/definition/

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►unconventional definitionsunconventional definitions http://www.ccrs.nrcan.gc.ca/ccrs/learn/terms/definition/http://www.ccrs.nrcan.gc.ca/ccrs/learn/terms/definition/

unconvdef_e.htmlunconvdef_e.html

What are Remote Sensing Images What are Remote Sensing Images Used For?Used For?

►studies of:studies of: the atmospherethe atmosphere the oceansthe oceans land areasland areas life on Earthlife on Earth

Remote Sensing ProcessesRemote Sensing Processes

► Data acquisition Data acquisition         - energy sources         - energy sources         - energy through the atmosphere         - energy through the atmosphere         - interaction with surface features         - interaction with surface features         - retransmission         - retransmission         - sensor systems         - sensor systems         - data         - data

- interpretation and analysis- interpretation and analysis

Remote Sensing ProcessesRemote Sensing Processes

► Data analysis: Data analysis:         - data processing         - data processing         - compilation         - compilation         - application        - application

Remote Sensing ProcessesRemote Sensing Processes

Causes of differences in scale of aircraft and satellite observations

MODIS (Terra) August 24, 2002