Earth-received time

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Definition
  1. Noun:
    • Earth-received time refers to the Coordinated Universal Time (UTC) at which a signal or event is received at a ground station on Earth. This term is primarily used in space communications and astronomy to precisely timestamp when data from spacecraft, satellites, or celestial events arrives on Earth.
Usage
  • Noun:
    • The mission control team noted the earth-received time of the signal to calculate the probe's exact position.
    • Scientists compared the earth-received time with the event's known emission time to measure the distance.
Advanced Usage
  • "ERT": This is the standard abbreviation for .
    • The data file is timestamped with the ERT for synchronization.
  • In technical contexts, is often contrasted with spacecraft event time or one-way light time, which account for the signal's travel duration from its source.
Variants and Related Words
  • Coordinated Universal Time (UTC): The primary time standard by which the world regulates clocks and time, forming the basis for .
  • Ground Receive Time (GRT): A synonym often used interchangeably with in satellite operations.
  • One-way light time (OWLT): The elapsed time it takes for a signal to travel from a spacecraft to Earth; minus OWLT equals the time the signal was sent.
Synonyms
  • Ground receipt time
  • Signal reception time (in UTC)
Related Phrases
  • As of ERT: Used to specify that a given status or data is current at the stated earth-received time.
    • The spacecraft was nominal as of the 12:00:00 UTC ERT.
Noun
  1. the coordinated universal time when an event is received on Earth

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