Table 3 Microwave bands and indices derived from S1 and used for LULC classification.
From: European Union crop map 2022: Earth observation’s 10-meter dive into Europe’s crop tapestry
Feature Name | Description |
|---|---|
Microwave features | VV: Single co-polarization, vertical transmit/vertical receive |
VH: Dual-band cross-polarization, vertical transmit/horizontal receive | |
VV/VH: The ratio between the VV polarization and the VH polarization | |
VV-VH: The difference between the VV and the VH polarizations | |
RVI: \(\frac{{\boldsymbol{4}}{{\boldsymbol{\sigma }}}_{{\boldsymbol{VH}}}^{{\bf{0}}}}{{{\boldsymbol{\sigma }}}_{{\boldsymbol{VV}}}^{{\bf{0}}}+{{\boldsymbol{\sigma }}}_{{\boldsymbol{VH}}}^{{\bf{0}}}}\) | |
NDPI: \(\frac{{{\boldsymbol{\sigma }}}_{{\boldsymbol{VV}}}^{{\bf{0}}}-{{\boldsymbol{\sigma }}}_{{\boldsymbol{VH}}}^{{\bf{0}}}}{{{\boldsymbol{\sigma }}}_{{\boldsymbol{VV}}}^{{\bf{0}}}+{{\boldsymbol{\sigma }}}_{{\boldsymbol{VH}}}^{{\bf{0}}}}\) | |
DPSVIm: \(\frac{{{\boldsymbol{\sigma }}}_{{\boldsymbol{VV}}}^{{\bf{0}}}\ast {{\boldsymbol{\sigma }}}_{{\boldsymbol{VV}}}^{{\bf{0}}}+{{\boldsymbol{\sigma }}}_{{\boldsymbol{VV}}}^{{\bf{0}}}\ast {{\boldsymbol{\sigma }}}_{{\boldsymbol{VH}}}^{{\bf{0}}}}{\sqrt{{\boldsymbol{2}}}}\) |
