Dataset

Communication Technologies Dataset

Communication and timing systems — optical relays, TDRS, telemetry/tracking/command, and time standards.

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Name	Type	ID
Apparent Solar Time	Time standard	time_standard:apparent-solar-time
Barycentric Dynamical Time	Time standard	time_standard:barycentric-dynamical-time
Coordinated Universal Time (UTC)	Time standard	time_standard:utc
Deep Space Optical Communications (DSOC)	Communication system	communication_system:dsoc
GPS Time	Time standard	time_standard:gps-time
International Atomic Time (TAI)	Time standard	time_standard:tai
Julian Date	Time standard	time_standard:julian-date
Laser Communications Relay Demonstration (LCRD)	Communication system	communication_system:lcrd
Sidereal Time	Time standard	time_standard:sidereal-time
Spacecraft Clock (SCLK)	Time standard	time_standard:spacecraft-clock
Telemetry, Tracking & Command (TT&C)	Communication system	communication_system:telemetry-tracking-command
Terrestrial Time	Time standard	time_standard:terrestrial-time
The Leap Second	Time standard	time_standard:leap-second
Tracking and Data Relay Satellite System (TDRS)	Communication system	communication_system:tdrs
Universal Time (UT1)	Time standard	time_standard:ut1

The primary and reference sources this topic draws on.

NASANational Aeronautics and Space Administration
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.
NASA JPLJet Propulsion Laboratory / Solar System Dynamics
Orbital data, ephemerides, and small-body parameters for planets, asteroids, and comets.