Posts filed under: Remote Sensing

  • 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...
  • Calculating the Vegetation Indices
Table of Contents: Step 1: Calculating Reflectance value from the Satellite data Step 2: Correcting the Reflectance value with sun angle Step 3: Calculating NDVI...
  • bacis of photogrammetry
1. Introduction to Photogrammetry 1.1 History of Photogrammetry 1.2 Development Cycles of the Photogrammetry 1.3 Application of Photogrammetry 1.4 Types of Photogrammetry 2. Data Acquisition...