urn:esa:psa:context:instrument:uly.gwe 1.0 1.11.0.0 Product_Context urn:nasa:pds:context:instrument:gwe.uly 2021-02-24 1.0 Changed inst LIDs from u:n:p:c:i:instID.scID to u:n:p:c:i:scID.instID Changed LIDs from urn:nasa:pds: to urn:esa:psa: And per "Guide toPDS4 Context Products" v1.7, changed all lidvid_reference to lid_reference urn:esa:psa:context:instrument_host:spacecraft.uly instrument_to_instrument_host Bertotti, B., R. Ambrosini, S.W. Asmar, J.P. Brenkle, G. Comoretto, G. Giampieri, L. Iess, A. Messeri, and H.D. Wahlquist, The gravitational wave experiment, Astron. Astrophys. Suppl. Ser., 92, No. 2, 431-440, Jan. 1992. reference.BERTOTTIETAL1992A Bertotti, B., R. Ambrosini, S. Asmar, G. Comeretto, G. Giampieri, L. Iess, Y. Koyama, A. Messeri, A. Vecchio, and H. Wahlquist. Preliminary Results of the Ulysses Gravitational Wave Experiment, GR13 Conference in Cordoba, Argentina, 1992. reference.BERTOTTIETAL1992B Iess, L., The Ulysses Gravitational Wave Experiment: Preliminary Results, Proc. X Italian Conf. on Gen. Rel. and Grav., World Sci. Pub. Co., 275, 1993. reference.IESS1993 GRAVITATIONAL WAVE EXPERIMENT Atmospheric Sciences not applicable not applicable Instrument Overview =================== (excepted from: [BERTOTTIETAL1992A]) Abstract. -- Since the optimum size of a gravitational wave detector is the wave length, interplanetary dimensions are needed for the mHz band of interest. Doppler tracking of Ulysses will provide the most sensitive attempt to date at the detection of gravitational waves in the low frequency band. The driving noise source is the fluctuations in the refractive index of interplanetary plasma. This dictates the timing of the experiment to be near solar opposition and sets the target accuracy for the fractional frequency change at 3.0 x 10^-14 for integration times of the order of 1000 sec. The instrumentation utilized by the experiment is distributed between the radio systems on the spacecraft and the seven participating ground stations of the Deep Space Network and Medicina. Preliminary analysis is available of the measurements taken during the Ulysses first opposition test.