NASA Telemetry Packet Formatting, C Language
Автор: The Bad Programmer
Загружено: 2025-05-29
Просмотров: 1483
Telemetry packet formatting is the process of organizing and structuring data (telemetry) from spacecraft systems into a standardized format so it can be sent, received, and interpreted correctly by mission control or onboard subsystems.
🚀 What is telemetry?
Telemetry is any kind of measurement or status information that is remotely collected and transmitted. For spacecraft, this includes:
Temperatures of components
Voltages and currents
Fuel levels
Attitude (orientation)
Position and velocity
Subsystem statuses (e.g., “thruster active,” “battery low”)
📦 What is a telemetry packet?
A telemetry packet is a chunk of binary data with a fixed structure, often containing:
Field Description
Packet ID Tells what type of data this is (e.g., temp data)
Length Number of bytes in the packet
Timestamp When the data was recorded
Payload Actual measurements or status data
Checksum Optional error-detection code
🛠️ Why format matters:
The ground station (Earth) needs to know how to interpret the raw bytes.
Without strict formatting, data would be garbled or meaningless.
NASA and space agencies often use CCSDS standards (Consultative Committee for Space Data Systems) for this purpose.

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