ISO/TC 211 Multi-Lingual Glossary of Terms (MLGT)

Note to entry: Scattering matrix is defined via ${\displaystyle \left(\begin{array}{c}{E}_H^s\\ E_V^s\end{array}\right)=\frac{e^{jkR}}{R}\left(\begin{array}{cc}{S}_{HH}& S_{HV}\\ S_{VH}& S_{VV}\end{array}\right)\left(\begin{array}{c}{E}_H^j\\ E_V^j\end{array}\right)}$ where ${\displaystyle \left(\begin{array}{cc}{S}_{HH}& S_{HV}\\ S_{VH}& S_{VV}\end{array}\right)}$ is the scattering matrix; ${\displaystyle \left(\begin{array}{c}{E}_H^j\\ E_V^j\end{array}\right)}$ is the electronic field vector of the wave incident on the scatterer; ${\displaystyle \left(\begin{array}{c}{E}_H^s\\ E_V^s\end{array}\right)}$ is the electronic field vector of the scattered wave; ${\displaystyle k}$ is the wavenumber of the illuminating wave; ${\displaystyle R}$ is the distance between the target and the radar antenna.