Difference between revisions of "Remote sensing"
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==Introduction== | ==Introduction== | ||
| − | There is an increasing demand for accurate, timely information on environmental and natural resources, including spatial relationships and temporal changes and trends, local to global. Remote sensing is the | + | There is an increasing demand for accurate, timely information on environmental and natural resources, including spatial relationships and temporal changes and trends, local to global. |
| + | {{Definition|title=Remote Sensing | ||
| + | |definition= In the broadest sense, remote sensing is the measurement or acquisition of information of an object or phenomenon, by a recording device that is not in physical or intimate contact with the object. In practice, remote sensing is the utilization at a distance (as from aircraft, spacecraft, satellite, or ship) of any device for gathering information about the environment <ref> [http://en.wikipedia.org/wiki/Remote_sensing/ WIKIPEDIA]</ref>. | ||
| + | Advantages of this technology are: | ||
* Observation of a large geographical area | * Observation of a large geographical area | ||
* Long-term and fast collection of data | * Long-term and fast collection of data | ||
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== Applications== | == Applications== | ||
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==See also== | ==See also== | ||
* [[Theme 9 - Assessment of field observation techniques]] | * [[Theme 9 - Assessment of field observation techniques]] | ||
Revision as of 16:59, 29 October 2013
Contents
Introduction
There is an increasing demand for accurate, timely information on environmental and natural resources, including spatial relationships and temporal changes and trends, local to global. {{Definition|title=Remote Sensing |definition= In the broadest sense, remote sensing is the measurement or acquisition of information of an object or phenomenon, by a recording device that is not in physical or intimate contact with the object. In practice, remote sensing is the utilization at a distance (as from aircraft, spacecraft, satellite, or ship) of any device for gathering information about the environment [1]. Advantages of this technology are:
- Observation of a large geographical area
- Long-term and fast collection of data
- Lower collecting costs
- "Inaccessible" regions become accessible (e.g. Antarctica)
- Object is not being destroyed
Disadvantages are:
- Lower spatial resolution (depending on the type of sensor)
- Need for the installation of complex systems (which have a long testing phase)
- Captured data need to be calibrated via in-situ data
- Noise caused by another source than the desired one
- Atmospheric effects degrade the quality of the images and need to be corrected
General principles
Types of sensors
Effects of atmosphere
Applications
See also
- Theme 9 - Assessment of field observation techniques
- Optical remote sensing
- Oil spill monitoring
- Wikipedia: Clearly represented overview about remote sensing and helpfull links
- Tutorial on remote sensing
