Posts filed under: Remote Sensing

  • Differences between remote sensing and GIS
A geographic information system (GIS) is a computer-based tool for mapping and analyzing features and events on earth. GIS technology integrates common database operations, such...
  • Remote Sensing Applications in Agriculture
Remote sensing is the acquisition of information about an object or any phenomenon without making any physical contact with the object. It is a phenomenon...
  • Limitations or Challenges of GIS
GIS stands for Geographical Information Systems. It is a computer system that has the capability of assembling, storing, manipulating and displaying the geographical information. Simply...
  • Advantages and disadvantages of remote sensing
Remote sensing is the art or science of obtaining information about an object, an area or a phenomena, through analyzing of data collected by a...
  • active vs passive
There are two main types of sensors used in remote sensing technology, active sensors and passive sensors. Difference between these two is quite small, however,...
Almost 70 percentage of the earth surface is covered by the vegetation and it is the first to encounter the energy (sun). Vegetation is important...
  • Landsat Application
1. Africa Content Environmental Change: Landsat data was heavily used to create Africa Environmental change Atlas Map that includes map of  glacier melting, loss of...
  • Remote Sensing Applications
Satellites have played a huge role in development of many technologies such as world mapping, GPS, etc. However, their applications are not limited as imaging...
  • Hyperspectral image
Multi spectral images like Landsat thematic Mapper and SPOT XS produce few broad wavelength bands but the hyperspectral image sensor will produce narrower wavelength bands....
  • Layer Stacking and SLC correction of Landsat 7 images
Table of Contents: Using ERDAS Imagine SLC Correction: Process 1:  Layer stack Bands Process 2:  SLC correction Using QGIS 2.0 SLC Correction: Process 1:  Layer stack/merge...