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Measurements and Calibration of Tropospheric Delay at Goldstone from the Cassini Media Calibration System

Tanner, A.; Keihm, S. J.; Rosenberger, H.

One and one-half years of near-continuous measurements of the troposphere-induced path delay at Goldstone have been analyzed in order to (1) characterize the troposphere-delay fluctuations in a statistical sense and (2) evaluate the path-delay calibration performance of the Media Calibration System (MCS) at DSS 25. Both the wet and dry components …

The Media Calibration System for Cassini Radio Science: Part III

Keihm, S. J.; Resch, G. M.; Lanyi, G. E. +5 more

A new media calibration system has been implemented at DSS 25. It is designed to calibrate the delay of radio signals imposed by the neutral atmosphere. The system provides periodic measurements, with intervals greater than 2 s, of both the static dry and fluctuating wet components of this delay. In particular, a water vapor radiometer calibrates …

A Stabilized 100-Megahertz and 1-Gigahertz Reference Frequency Distribution for Cassini Radio Science

Calhoun, M.; Sydnor, R.; Diener, W.

The development of the stabilized fiber-optic distribution assembly (SFODA) is reported. The system was developed to enable gravitational wave searches and atmospheric occultation experiments between the Cassini spacecraft and the NASA Deep Space Network. These experiments are conducted at 32-GHz (Ka-band) frequencies and demand the highest possib…

The Media Calibration System for Cassini Radio Science: Part II

Keihm, S. J.; Resch, G. M.; Lanyi, G. E. +5 more