General Information

This plugin generates derived SAR parameters (viz. vegetation indices, polarimetric decomposition parameters) from input polarimetric matrix (C3, T3, C2, T2). The input data needs to be in [PolSARpro](https://earth.esa.int/web/polsarpro/home)/[ENVI](https://www.l3harrisgeospatial.com/Software-Technology/ENVI) format (*.bin and *.hdr). It requires [numpy](https://numpy.org/), [matplotlib](https://matplotlib.org/) python libraries pre-installed.

Installation

> __Note:__ SAR tools requires QGIS version >=3.0.

  • The easiest way (requires internet connection) :
    • Open QGIS -> Plugins -> Manage and Install Plugins… -> select `All` tab -> search for `SAR tools` –> select and install plugin

  • Alternative way (offline installation) :
    • Go to [releases](https://github.com/Narayana-Rao/SAR-tools/releases) of this repository -> select desired version -> download the `.zip` file.

    • Open QGIS -> Plugins -> Manage and Install Plugins… -> `install from ZIP` tab –> select the downloaded zip –> install plugin (ignore warnings, if any).

Available functionalities:

  • Indices :
    • Radar Vegetation Index (RVI) (Full-pol and dual-pol)

    • Generalized volume Radar Vegetation Index (GRVI)

    • Polarimetric Radar Vegetation Index (PRVI) (Full-pol and dual-pol)

    • Dual-pol Radar Vegetation Index (DpRVI)

    • Degree of Polarization (DOP) (Full-pol, dual-pol, and compact-pol)

    • Compact-pol Radar Vegetation Index (CpRVI)

  • Polarimetric Decompositions :
    • Model free 3-Component decomposition for full-pol data (MF3CF).

    • Model free 3-Component decomposition for compact-pol data (MF3CC)

    • Improved S-Omega decomposition for compact-pol data (iS-Omega)