urn:nasa:pds:context:investigation:other_investigation.media.dsn 1.0 1.13.0.0 Product_Context 2020-07-30 1.0 The DSN Media Calibration investigation is the set of observations and analyses used by the NASA Deep Space Network (DSN) to develop calibrations for the effects of the ionosphere, troposphere, and local weather on propagation of radio signals between DSN antennas and spacecraft. Although small, these effects are measurable and can change the apparent range to and velocity of spacecraft being tracked by the DSN. urn:nasa:pds:context:facility:observatory.dsn investigation_to_facility urn:nasa:pds:radiosci.documentation:dsn.810-005 investigation_to_document This is the DSN Telecommunications Link Design Handbook. The reference is to a PDS Collection. Each member product in the Collection comprises several modules -- sometimes separate files, sometimes wrapped together into a single file, depending on the version of the Handbook that has been included in the Collection. Modules are added, removed, and/or updated as needed. Each version of the Handbook (each member product of the Collection) contains all modules that were current as of the publication date. Module 105 (Atmospherc and Environmental effects) may be of special interest here. Asmar, S. W., J. W. Armstrong, L. Iess, and P. Tortora, Spacecraft Doppler Tracking: Noise Budget and Accuracy Achievable in Precision Radio Science Observations, Radio Science, 40, RS2001, doi:10.1029/2004RS003101, 2005. This paper discusses noise in Doppler tracking of deep space probes and provides a detailed noise model for Doppler radio science experiments. Current technology allows velocity measurements to better than 1 micron per second when data are averaged over 1000 seconds. Examples from Cassini are included. Applications of the noise model to experiment planning are considered, and the authors discuss the prospects for significant sensitivity improvements. DSN Media Calibration Other Investigation 1950-01-01 2099-12-31 The DSN Media Calibration investigation is the set of observations and analyses used by the NASA Deep Space Network (DSN) to develop calibrations for the effects of the ionosphere, troposphere, and local weather on propagation of radio signals between DSN antennas and spacecraft. Although small, these effects are measurable and can change the apparent range to and velocity of spacecraft being tracked by the DSN.