earth-received time
Definition
- 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
-
the coordinated universal time when an event is received on Earth
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