Fundamentals of Remote Sensing - Printable Version

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Fundamentals of Remote Sensing - Manish Jain - 10-04-2019

Remote sensing (RS) is the art and science of making measurements of the earth using sensors on airplanes or satellites. These sensors collect data in the form of images and provide specialized capabilities for manipulating, analyzing, and visualizing those images.

Active Remote Sensing, systems which provide their own source of energy to illuminate the objects they observe.

Passive Remote Sensing , systems which detect natural energy (radiation) that is emitted or reflected by the object or scene being observed.

Remote sensing platforms can be defined as the structures or vehicles on which remote sensing instruments (sensors) are mounted. 

Types of platforms

Ground-borne platforms: 
Ground borne platforms are used to record detailed information about the surface which is compared with information collected from aircraft or satellite sensors i.e. for ground observation. Ground observation includes both the laboratory and field study, used for both in designing sensors and identification and characterization of land features

Air-borne platforms: 
Airborne platforms are used to collect very detailed images and facilitate the collection of data over virtually any portion of the Earth's surface at any time. Airborne platforms were the sole non-ground-based platforms for early remote sensing work.

Space-borne platforms: 
In space-borne remote sensing, sensors are mounted on-board a spacecraft (space shuttle or satellite) orbiting the earth. Space-borne or satellite platform are onetime cost effected but relatively lower cost per unit area of coverage, can acquire imagery of entire earth without taking permission. Space borne imaging ranges from altitude 250 km to 36000 km.


for more detail download EBook on Remote Sensing by Canada Centre for Remote Sensing
Fundamentals of Remote Sensing

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