Search Publications
Cassini as a Narrowband Detector of Gravitational Radiation
Tinto, M.
A filtering technique allowing the reduction of two-way Doppler frequency fluctuations from spatially localized noise sources (like the frequency fluctuations introduced by the troposphere, the ionosphere, or the mechanical vibrations of the ground antenna) is presented in the context of the Cassini Doppler tracking searches for gravitational radi…
Deep-Space Navigation Applications of Improved Ground-Based Optical Astrometry
Null, G. W.; Owen, W. M., Jr.; Synnott, S. P.
Improvements in ground-based optical astrometry will eventually be required for navigation of interplanetary spacecraft when these spacecraft communicate at optical wavelengths. Although such spacecraft may be some years off, preliminary versions of the astrometric technology can also be used to obtain navigational improvements for the Galileo and…