Remote Sensing Systems

Introduction to remote sensing systems:

Remote sensing is a kind of phenomenon by which we can get information  without any physical contact to the body.This is a great technology which is used for gathering of information.These are used by the satellites to find the information of the different bodies in the universe without any physical contact to that body.Remote sensing systems uses high resolution cameras and many high technology systems to collect the information.This technology is also used in the medical science for the treatment of some critical problems.

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Remote sensing is of two types

1)Active

2)Passive

In the active remote sensing the device emits radiation in  order to scan the objects and areas to get the proper information.The sensors present in the remote sensing system obtains the amount of reflected radiation from the object and based on that ,the information about the object is determined.RADAR is the good example of active remote sensing system

On the other hand the passive remote sensing systems detects the radiation emitted by the different objects and base on that information is collected.Photography ,radiometers ,infrared are the examples of the passive remote sensing systems.


Working of remote sensing systems


To run the remote sensing application some soft wares are made which are run on the computer .these soft wares are used to control the task of remote sensors.The quality of remote sensing data contains some points

1)Radiometric resolution: This is related to the intensity if the radiation

2)Spatial resolution: This is related to the image quality

3)Spectral resolution: This is related to the wavelength or frequency bands.

4)Temporal resolution: This is related to the infrastructure .it means that it checks the presence of different locations like plane or mountains.

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Application of remote sensing systems


It is used in the medical science for the treatment of several diseases by using some devices.These are

1)MRI(magnetic resonance imaging): This is used to get the information from those parts of the  body of the patients where it is not possible to reach like inside the brain ,neurological system etc.

2)X-ray : This technique is also a kind of remote sensing

3)Positron Emission Tomography:

Remote sensing is used in the detection of concentration of chemicals

Radar is also a kind of Remote sensing device.

LIDAR (Light detection and ranging) is also an important remote sensing technology which is used to detect the range of weapons.