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Antenna system of the NASA Wind spacecraft measured with the Russian radar facility "Sura"

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6 Author(s)
Belov, Yu. ; Inst. of Radio Phys. Res., Acad. of Sci., Nizhny Novgorod, Russia ; Tokarev, Yu. ; Kaiser, M. ; Reiner, M.
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Joint experiments between the Russian radar facility "Sura" and the NASA Wind spacecraft have permitted the authors to measure the antenna patterns of two orthogonal dipoles mounted on the spacecraft and to determine the polarization state of the radar array. Both findings were produced by direct measurements. The Wind antenna operating frequency range is 1.075 to 13.825 MHz. The spacecraft is spinning around its Z axis and a dipole "Z" is oriented along this axis and another dipole "Y" is in the plane normal to Z which coincides with the ecliptic plane. Three modes of Wind antenna operation were used: the Y signal added with the Z signal, the Y signal phased shifted by 90/spl deg/ added with the Z signal, as well as the Z signal itself. These three Wind antenna modes permit the measurement of the Stokes parameters of the radiation.

Published in:

Antennas and Propagation Society International Symposium, 1997. IEEE., 1997 Digest  (Volume:1 )

Date of Conference:

13-18 July 1997

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