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Reflection Spectral vegetation, soil and water

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Images: Reflected electromagnetic energy of the Sun of spectral vegetation, soil and water received by sansor satellite.
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.


Sensors and Probes (Flatform) remote sensing Technology

  1. 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.



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.
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.


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