Physics
Scientific paper
Feb 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985stin...8532066d&link_type=abstract
Unknown
Physics
Background Radiation, Gravitational Waves, Interplanetary Medium, Interplanetary Spacecraft, Plasma Turbulence, Satellite Doppler Positioning, Satellite Tracking, Frequency Shift, Radiation Detectors, Signal To Noise Ratios, Superhigh Frequencies, Ultrahigh Frequencies
Scientific paper
The role of the interplanetary plasma turbulence in experiments for the detection of a gravitational wave background by Doppler tracking of interplanetary spacecraft is discussed. By analyzing the radio link configuration, an observable quantity (a linear combination of the S and X-band Doppler shift) which strongly increases the signal to noise ratio at frequencies smaller than the reciprocal of an Earth-spacecraft light time is constructed. A model of interplanetary turbulence is used to calculate the minimum energy spectral density of the background which can be detected against plasma noise. In the low frequency part of the spectrum the sensitivity of the experiment should increase and the limits obtained for the gravitational background energy density should be more interesting.
Dobrowolny Marino
Iess Luciano
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