🚀 Aerospace & Space · Sequence
Satellite Command Uplink Sequence
How an operator sends a command to a satellite: planning, authorisation, uplink during a pass and telemetry confirmation.
Drawing diagram…
What this diagram shows
- Commands are checked against constraints before uplink
- Uplink is only possible during a ground station pass
- Telemetry confirms the command was executed
Prompt used
Satellite commanding sequence: the operator prepares a command plan in the mission control system, which validates it against power and thermal constraints. A second operator authorises it. When the satellite passes over the ground station, commands are encrypted and uplinked; the satellite acknowledges receipt, executes the command and downlinks telemetry that confirms the new state.
Mermaid code
sequenceDiagram actor OP as Flight Operator actor SUP as Flight Director participant MCS as Mission Control System participant GS as Ground Station participant SAT as Satellite OP->>MCS: Prepare command plan MCS->>MCS: Check power and thermal constraints MCS->>SUP: Request authorisation SUP-->>MCS: Authorised Note over GS,SAT: Wait for ground station pass MCS->>GS: Encrypted commands GS->>SAT: Uplink SAT-->>GS: Command acknowledged SAT->>SAT: Execute command SAT-->>GS: Telemetry downlink GS-->>MCS: New spacecraft state MCS-->>OP: Command verified
Related templates
Satellite Ground Station Network
How an earth-observation satellite operator talks to its satellites: ground stations around the world, the mission control centre and the data processing centre.
Launch Vehicle Flight Phases
The phases of a rocket launch from countdown to payload separation, with holds, aborts and the flight termination path.
Aircraft Manufacturing Supply Chain
How an aircraft is built from a global supply chain: tier suppliers, major assemblies, final assembly, testing and delivery.
Spacecraft Telemetry Data Flow
How telemetry from a spacecraft is received, decoded, checked against limits and archived, and how commands go back up.
Satellite Constellation Operations
The ground software for operating a satellite constellation: mission planning, flight dynamics, contact scheduling, command and control, and payload delivery.
Aircraft MRO Parts and Maintenance Schema
A schema for aircraft maintenance: aircraft, installed components with life limits, maintenance tasks, work packages and parts inventory.