Invariants measurement of back scattering matrix

The estimation of BSM invariants can be carried out by indirect methods on the basis of quantities measurement, which are proportional to modules and arguments of elements of scattering matrix. Power quantities or the voltage characteristics of the received signal are preferred to be used as measuring parameters. In a number of cases (e.g. in optics) the carrying out of phase measurements is impossible or difficult. Since the total amount of real parameters of BSM amounts to eight (four modules and four arguments) a measurement cycle of received signal levels is required. We consider a method of BSM invariants measurement based on the transmission and reception of polarization manipulated signals with two-channel single-position radar.