what is RS

Remote Sensing (RS) is the acquiring of Data about an object without touching it.


Remote Sensing  is the art and science of obtaining information about an object or feature without physically coming in contact.


Remote Sensing

The data collected can be of many forms: variations in acoustic wave distributions (sonar), force distributions (gravity meter), electromagnetic energy distributions (eye), etc.


Remote Sensing

How it’s Work

The Remote Sensing process of inferring surface parameters from measurements of the Electromagnetic Radiation (EMR) from the Earth’s surface


EMR

Electromagnetic Radiation(EMR) or Electromagnetic energy is the energy propagated in the form of an advancing interaction between electric and magnetic fields


EMS

The Electromagnetic Spectrum is represented by Electromagnetic waves. It’s characterized by their wavelength or frequency, linked by the speed of light.


Active  RS

In the case of Active Remote Sensing, energy is generated and sent from the RS platform towards the targets


Passive RS

Passive Remote Sensing, source of energy is that naturally available such as the Sun.


Remote Sensing Platforms

Thre are three types of platform-

Ground borne
Airborne
Spaceborne


Applications of RS

Biodiversity management
Deforestation
Land use planning
Mapping
Soil sensing
Water source management


Advantages of RS

Provides data from large areas
Easy and rapid collection of data
Provides data of very remote and inaccessible regions


Disadvantages of RS

The interpretation of imagery requires a certain skill level
Needs cross verification with ground (field) survey data
Data from multiple sources may create confusion