Comparison of multipolarization SAR systems depending on the way of the full scattering matrix measurements

A number techniques, providing simultaneous or quasi-simultaneous measurements of the co-polarized and cross-polarized components in each orthogonal polarization are discussed in the report. Among the techniques of the measurements separation are time separation (SIR-C case), spatial/temporal separation from the same orbit of a squint SAR, repeated orbits interferometry mode, carrier separation and orthogonal codes separation. Each of the techniques under discussion is characteristic by the required PRF or swath width, data rate, level of polarization coupling and ambiguities. The comparison of the distortions is being made as well as a comparison of the SAR parameters.