Definition of remote sensing

Remote sensing is the science and art or technique to get information about the area or the symptoms of the earth by way of analyzing the data obtained from the device without direct contact with the object. Remote sensing components are as follows:

1. power
In remote sensing, used two power namely natural energy such as the sun and the moon, called passive remote sensing. As for remote sensing that uses artificial light is called an active remote sensing. In addition to the solar atmosphere is also influential in the process of remote sensing. The atmosphere can not sustain the energy and can be captured by the sensor eye is a window that has atmosphere. Atmospheric windows are the eyes of the visible spectrum.

2. attractions
Object is a target in remote sensing. Attractions include the atmosphere, hydrosphere, lithosphere, and biosphere. Objects that power high pantulnya will look brighter in the image.

3. censorship
Sensor is an object recorder mounted on a vehicle (aircraft, balloons, satellites). Based on the recorder, the sensors can be divided into two kinds:
a. Photographic sensors: a camera sensor that works in the eyes of the visible spectrum and produce images or aerial photographs.
b. Electromagnetic sensors: a sensor that works electrically by using a computer. The image produced is a remote sensing image.

4. image
The image is a picture of the object that generated by the sensor. Objects in the images captured can be identified by characteristics recorded on the sensor. Three characteristics are recorded by the sensor is characteristic of spatial, temporal, spectral. Spatial Characteristics include shape, size, shadow, pattern, texture, site, and associations. Characteristics of temporal objects were age and time recording. Spectral Characteristics include hue and color. Rona is the lightness and darkness of an object. The color is a form visible to the eye by using a narrow spectrum.