Depolarization Measurements at 12 GHZ

A 2 Km long horizontal link, at 12 GHz, is set up to provide measurements of depolarization. CW signal is sequentially (each 1msec) transmitted in vertical, horizontal and canted (45°) polarization. Synchroneous detection allows to determine co- and crosspolar fields, in amplitude and phase, in "cartesian" form. Fields are expressed in terms of STOKES parameters and covariance matrix. Numerical recording on magnetic tape allows to analyse depolarization up to a fluctuation frequency of 167 hz. Vizualisation on scope and correction of crosspolarization are also treated.