@article{oai:niigata-u.repo.nii.ac.jp:00001830, author = {Yang, Jian and Yamaguchi, Yoshio and Yamada, Hiroyoshi and Lin, Shiming}, issue = {10}, journal = {IEICE transactions on communications, IEICE transactions on communications}, month = {Oct}, note = {For the completely polarized wave case, this paper presents the explicit formulae of the characteristic polarization states in the co-polarized radar channel, from which one can obtain the CO-POL Max, the CO-POL Saddle and the CO-POL Nulls in the Stokes vector form. Then the problem on the polarimetric contrast optimization is discussed, and the explicit formula of the optimal polarization state for contrast enhancement is presented in the Stokes vector form for the first time. To verify these formulae, we give some numerical examples. The results are completely identical with other authors', which shows the validity of the presented method.}, pages = {1570--1575}, title = {The Formulae of the Characteristic Polarization States in the Co-Pol Channel and the Optimal Polarization State for Contrast Enhancement}, volume = {E80-B}, year = {1997} }