Remote Sensing is a technology which is required to
collect information about an object or to observe a medium without coming in direct
contact with that object or medium. Remote sensing is done using devices that
are fitted on the ground, aircrafts, sea vessels, or satellites. Remote sensing
technology makes available unique information of our planet and gives us a
broader vision. A totally new perspective is achieved when we look at earth via
remote sensors fitted in the satellites. A different outlook is unlocked as
compared to what we see standing on the earth. Satellite remote sensing caters the
understanding of earth’s dynamic environment that affects the biodiversity.
It’s through remote sensing technology we know that earth is having a fever. Working
with remote sensing technology is a phenomenal experience a person can get.
“Man must rise above the Earth
- to the top of the atmosphere and beyond - for only thus will he fully
understand the world in which he dwells.” Socrates
There are two types of remote sensing technologies:
Passive
remote sensing technology
This technology is used to record radiations coming
from an object or area. For example: An infrared camera that records heat
coming from an object or a camera that registers the sunlight that is reflected
from an area.
Active remote sensing technology
In this technology, the remote sensing device sends
out its own signal to any object and then receives back that signal to collect
information about that object. For example: A remote sensor that is affixed in
an aircraft and is using a pulsed laser to gather location or shape of the
surface below it.
Written by,
Engr. Ayesha Alam Khurram
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