Transcript Remote Sensing - The Naked Science Society

Remote
Sensing
Remote Sensing
• Gives us “the Big Picture”
• Allows us to see things from
the larger perspective.
• Allows us to see things we
otherwise might miss.
• Definition:
Remote sensing is 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.
The Need for Remote Sensing
Meteorology:
Oceanography:
Glaciology:
Profiling of atmospheric
temperature, pressure and
water vapor content.
Measurement of the sea’s
surface temperature, mapping
ocean currents and wave
energy spectra.
Mapping the distribution and
motion of ice sheets and sea
ice, determining the navigability
of sea ice.
Geology,Geomorphology:
Topography:
Agriculture, Forestry:
Identification of rock type,
location of geological faults
and anomalies, observing
tectonic motion.
Obtaining accurate elevation
data and referring them to a
given coordinate system,
production and revision of
maps.
Monitoring the extent and type
of vegetation cover and its
state of health, mapping soil
type and determining its water
content.
Hydrology:
Disaster Control:
Planning Applications:
Assessing water resources,
forecasting meltwater run-off
from snow.
Warning of sand and dust
storms, avalanches, landslides,
flooding etc.,monitoring of
pollution.
Generation of inventories of
land use and monitoring
changes, assessing resources,
performing traffic surveys.
Aerial View -
The viewer is observing from
above the object.
Synoptic View - The viewer is able to see an
object in relation to other objects.
Vertical View - The sensor is directly overhead.
Oblique View - The sensor is not directly
overhead; it is taking the image at an angle.
Oblique View of Southern California
Two Parts of Remote Sensing
Platform - the device to which
the sensor is attached
Sensor - the device that actually
gathers the remotely sensed
data
Paris, 1858
Pigeon Photographers
Actual Pigeon Pictures
Post-quake San Francisco,
1906
Wilbur Wright and
his first aerial
photograph of France.
Landsat Satellite
Ox-Bow of the
Mississippi
High Altitude
Platform
High Altitude
Balloon Platform
Landsat sensor
array
True color film
Infrared film
Landsat Image