Images: Reflected electromagnetic
energy of the Sun of spectral vegetation, soil and water received by sansor
satellite.
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In
Figure 4. demonstrated a reflection curve on the three main objects spectral on
the surface of the Earth, i.e. healthy green leafy vegetation, bare ground
(grayish brown clay), and crystal clear waters. The line on the curve presents
the average reflection curves created with measurement of sample tour of which
there are many (Lillesand. 2002). This curve shows an indicator about the type
of conditions related to object. Although the object is invidual reflection
will differ large above and under average rating, but the curve shows some
fundamental points related to the spectral reflection. Healthy vegetation is green due to the
magnitude of the energy absorption in the Green spectrum. If the plants
suffered some disruption, and will affect the growth process and production up
to par then it would reduce or shut down the production of chlorophyll. As a
result of the lack of absorption by chlorophyll in the blue and Red channels.
Often reflected on spek .
Images:
spectral Reflection Curves that characterize an object of vegetation, soil and
water.
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Sensors
and Probes (Flatform) remote sensing Technology
- Sensor
The Sensor is a device used to measure and
record electromagnetic energy. In remote sensing, sensor system can be
distinguished into two categories: active and passive sensors sensors. Blurb
about it, as follows:
- Passive Sensors
For
passive sensors depending on the source of energy from the outside, the Sun. So
that remote sensing system passive receiving reflected energy and/or emitted
from the Earth's surface. Remote sensing satellite technologies that use
sensors with channel looks eye (visible) and infrared. Camera photography is a passive sensor is the
most old and worn. As another example of passive sensor is gamma-ray spectrometer,
aerial cameras, video cameras and scanners, thermal and multispektral and
sebagainnya
Image
6. System of remote sensing satellite
remote sensors.
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Active
Sensor
For active sensors have their own
source of energy. Measurement with active sensors more controllable since it
does not depend on weather conditions and time.
For example, the sensor is active among other scanner LASER, RADAR
altimeter, RADAR Imagery, and so on.
Image: System sensor's active and
passive microwave system with optical sensor and satellite imagery produced.
Cloud coverage penetration ability in gelombangan micro mengasilkan image of a
clean of the cloud cover.
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2 2. (Probe) Platform
Vehicle
system (platform) remote sensing can be bright in the two systems, the first
remote sensing by airborne, i.e. by using the aircraft (aircraft), a hot air
balloon, and so on. The second is a remote sensing system and using the system
speceborne i.e. using a probe satellite, spacecraft, and sebagainnya.