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Stelter, L. R.

Publications and source records attributed to Stelter, L. R..

3 records
All sourcesNASA NTRSDOE OSTI
NASA NTRS1975

Spaceflight tracking and data network support in the space tug era

This paper describes the Spaceflight Tracking and Data Network (STDN) which will be used to provide command, telemetry and tracking support to the Space Tug in the 1980's. A description of the mission support capabilities of the two major elements of the STDN - the ground based sites (GSTDN) and the Tracking and Data Relay Satellite System (TDRSS) - is provided. This paper also contains a summary description of the mission/STDN RF and Data Handling interface.

Stelter, L. R.↗
NASA NTRS1972

Reliability of the global NASCOM network.

Transmission media reliability is an extremely important factor in the design and operation of a real-time communications network. It has had a profound effect not only on the configuration design of the NASCOM network itself, but on the philosophy of command/control of all NASA spacecraft, manned and unmanned. In an effort to obtain the highest possible level of circuit reliability and performance, goals or criteria have been established for each type of circuit. Also, special management techniques have been used in an effort to improve circuit reliability. The results of these efforts, as well as general technological improvements in the transmission media, are illustrated by showing measured composite circuit reliability over the past nine years and actual circuit performance measured during Apollo 8 through 15.

Stelter, L. R.↗