A dual-polarization system, or “dual-pol,” might transmit in one polarization but receive in two, resulting in either HH and HV or VH and VV imagery. Dual polarization provides additional detail about surface features through the different and complementary echoes.
In this paper, a selection of recent measurements of single and double polarisation observables accessible with linearly or circulary polarised photon beam and a longitudinally or transversely polarised proton target is shown, and their impact on the PWA is discussed.
