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Ulysses SCE 1-sec Radio Doppler Data C4

Metadata Updated: March 13, 2026

This data set includes dual-frequency (S- and X-band) data sampled at one-second resolution from the fourth superior conjunction (C4) of Ulysses with the Sun during February 22 to March 14, 1995. The dual-frequency data were derived from raw tracking station data in Archival tracking Data Files (ATDFs), which include both ranging and doppler data from the standard DSN tracking receivers. The data for SCE are provided by the Radio Science Support group at the Jet Propulsion Laboratory. Two file types are included: (1) binary compressed (UNIX gzip) versions of ASCII tables of the one-second dual frequency data, and (2) ASCII document .txt files. Each data file contains dual-frequency Doppler data at a sample rate of one point per second from each tracking pass. The data filename provides the day-of-year (doy) and ground tracking station (dss) according to the scheme "DOP95doy.dss" for the C4 conjunction. The "doy" given to each data file applies to the start of the data recording. The document file "datalist_c4.txt" contains listings of each tracking pass with such information as date, ATDF number, start and end times of pass, start and end times of data recording, pass duration, station overlaps, etc. The total volume of validated SCE Doppler data in the data set is 30.0 MB for the binary compressed .gz files and 149.8 MB for uncompressed ASCII data. Details on the SCE Experiment are available in Bird, M. K., et al., "The Coronal Sounding Experiment," Astron. and Astrophys. Supp. Ser., 92(2), 425-430, 1992.

Access & Use Information

Public: This dataset is intended for public access and use. License: See this page for license information.

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Dates

Metadata Created Date March 13, 2026
Metadata Updated Date March 13, 2026

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date March 13, 2026
Metadata Updated Date March 13, 2026
Publisher NASA Space Physics Data Facility (SPDF) Data Services
Maintainer
Identifier /SDE/SPASE_JSON/|c947460b2685aad3ed628a3447ebac55
Data Last Modified 2026-03-10
Category Heliophysics
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id 9c818926-93c0-4229-9c45-fd7a54c922ec
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
License https://www.usa.gov/government-works
Program Code 026:000
Source Datajson Identifier True
Source Hash 21ae5c780539b002761187fa6187c777527c14715d3df80949e8f8a9594d46e2
Source Schema Version 1.1

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