Customization to Simultaneous Transmission, Simultaneous Receive Mode

The main literature reference method parameters have been tuned, using data obtained in the alternating horizontal/vertical polarization mode, in which both the co-polar terms are observables, that is, H received from H transmitted (HH) and V received from V transmitted (VV). The cross-polar terms, that is, V received from H transmitted (VH) and the (HV) signals are observables as well. As a consequence, the linear depolarization ratio (LDR) can be promptly used as an input observable, paying special attention to cases of LDR data at low signal to noise ratio.

Operation in the mode of simultaneous transmission and simultaneous receive, known as the 'hybrid' mode, excludes availability of LDR at pulse-to-pulse basis. Adding to this, characteristics of other polarimetric observables depend on the processing mode, in presence of significant propagation effects in particular.

These 2 general reasons suggest for method customizations specific to polarimetric processing modes, and has in part motivated the procedure.