In the recent joint experiments of the Russian radar facility `Sura' and the NASA Wind spacecraft, the antenna patterns of two orthogonal dipoles mounted on the spacecraft were measured and the polarization state of the radar array was determined. Three modes of antenna operation were used: the Y signal added with the Z signal, the Y signal phase shifted by 90° added with the Z signal, and the Z signal itself. These three modes permit measurement of the Stokes parameters of the radiation. The antenna pattern singularities can be used to determine a direction of incident radiation to wind and the propagation effects along the path earth to wind and in the interplanetary plasma can be estimated.
|Original language||English (US)|
|Number of pages||2|
|Journal||IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)|
|State||Published - Jan 1 1997|
|Event||Proceedings of the 1997 IEEE Antennas and Propagation Society International Symposium. Part 1 (of 4) - Montreal, Can|
Duration: Jul 13 1997 → Jul 18 1997