What is Remote Sensing ?

Remote Sensing - Remote detecting is the study of acquiring the actual properties of an area without being there. It permits clients to catch, picture, and break down articles and highlights on the World's surface. By gathering symbolism, we can arrange it into land cover and different sorts of examinations.

How Remote Sensing Works ?

In many instances, incoming radiation and the targets of interest interact during the remote sensing process. The utilisation of imaging systems, which involves the next seven components, serves as an illustration of this. However, it should be noted that remote sensing also involves the use of non-imaging sensors and the detection of radiated energy.

EMR Spectrum

The electromagnetic spectrum ranges from the shorter wavelengths (including gamma and x-rays) to the longer wavelengths (including microwaves and broadcast radio waves). There are several regions of the electromagnetic spectrum which are useful for remote sensing.

Satellite Orbits

An orbit is a regular, repeating path that an object in space takes around another one. High Earth orbit, Medium Earth orbit, and Low Earth orbit.

  • High Earth orbit begins about one-tenth of the way to the moon. Many kinds of weather and some communications satellites tend to have a high Earth orbit, furthest away from the surface.

  • Satellites that orbit in a medium (mid) Earth orbit include navigation satellites, designed to monitor a particular region.

Image Classification

The 3 main types of Image Classification techniques in remote sensing are:

  • Unsupervised image classification

  • Supervised image classification

  • Object-based image analysis