Vibeship-spawner-skills ground-station-ops

id: ground-station-ops name: Ground Station Operations category: space version: 1.0.0 description: > Use when designing ground station networks, scheduling satellite contacts, processing telemetry, commanding spacecraft, or analyzing link budgets.

triggers:

• "ground station"
• "satellite contact"
• "pass prediction"
• "AOS"
• "LOS"
• "telemetry"
• "commanding"
• "uplink"
• "downlink"
• "antenna tracking"
• "link budget"
• "G/T"
• "EIRP"

provides:

• name: contact_scheduling description: Satellite pass prediction and scheduling
• name: telemetry_processing description: Telemetry decommutation, calibration, and monitoring
• name: command_management description: Command encoding, verification, and execution tracking
• name: link_analysis description: Ground station link budget analysis

knowledge_base: ground_segment_architecture: components: antenna_system: description: "Tracks satellite, receives/transmits RF" types: - "Parabolic dish (3-13m typical)" - "Phased array" - "Flat panel" parameters: - "Diameter" - "Gain" - "G/T" - "Tracking rate" rf_frontend: components: - "Low Noise Amplifier (LNA)" - "High Power Amplifier (HPA)" - "Diplexer" - "Frequency converter" modem: functions: - "Modulation/demodulation" - "Error correction encoding/decoding" - "Bit/frame synchronization" station_computer: functions: - "Antenna control" - "Pass automation" - "Data routing"

contact_scheduling: pass_parameters: AOS: "Acquisition of Signal - satellite rises above minimum elevation" LOS: "Loss of Signal - satellite drops below minimum elevation" TCA: "Time of Closest Approach - maximum elevation" duration: "LOS - AOS time" max_elevation: "Highest point in pass" typical_values: min_elevation: "5-10 degrees" leo_pass_duration: "5-15 minutes" passes_per_day: "4-6 for single station" scheduling_algorithm: priority_factors: - "Maximum elevation (higher = better link)" - "Pass duration" - "Satellite priority" - "Activity type requirements" conflict_resolution: - "Priority-based" - "Time-sharing if possible" - "Alternative station"

telemetry_processing: ccsds_standards: packet_structure: - "Primary header (6 bytes)" - "Secondary header (optional)" - "User data" - "Error control" tm_transfer_frame: size: "Typically 1115 bytes" sync_marker: "1ACFFC1D (hex)" processing_levels: level_0: "Raw frames with sync" level_1: "Decommutated packets" level_2: "Calibrated engineering units" level_3: "Derived parameters" telemetry_point: definition: - "Mnemonic (short name)" - "Data type (int8, uint16, float32)" - "Byte/bit offset" - "Calibration (raw to engineering)" - "Limits (warning, critical)" limit_checking: status: "Nominal, Warning, Critical, Stale" actions: - "Alert operators" - "Trigger procedures" - "Auto-safing"

commanding: command_types: realtime: "Execute immediately upon receipt" time_tagged: "Execute at specified time" stored_sequence: "Part of on-board sequence" verification: levels: - "Command echo (received correctly)" - "Execution acknowledgment" - "Effect verification (telemetry change)" authorization: criticality_levels: "1-5 (5 = most critical)" two_person_rule: "Required for hazardous commands" audit_trail: "All commands logged" command_constraints: - "Spacecraft state prerequisites" - "Timing constraints" - "Mutual exclusion"

link_analysis: parameters: eirp: "Effective Isotropic Radiated Power (dBW)" g_over_t: "Antenna figure of merit (dB/K)" path_loss: "20log10(4pi*d/lambda)" atmospheric_loss: "Increases at low elevation" eb_n0: "Energy per bit to noise density" link_closure: required_margin: "3 dB typical" check: "Eb/N0_achieved > Eb/N0_required + margin" data_volume: calculation: "Rate * time * overhead_factor" planning: "Match to mission data generation"

patterns:

• name: pass_operations steps:

  • "Pre-pass configuration (30 min before)"
  • "Antenna acquisition (at AOS)"
  • "Two-way link establishment"
  • "Execute contact plan"
  • "Real-time monitoring"
  • "Post-pass data processing"
  • "Quick-look report"

• name: telemetry_database_setup steps:

  • "Define all telemetry points"
  • "Specify calibrations"
  • "Set limit thresholds"
  • "Configure displays"
  • "Test with known data"
  • "Validate against specification"

• name: command_procedure steps:

  • "Select command from database"
  • "Enter parameters"
  • "Verify against constraints"
  • "Authorize (1 or 2 person)"
  • "Uplink"
  • "Verify echo"
  • "Confirm execution"
  • "Log outcome"

anti_patterns:

• name: single_ground_station problem: "Limited contact time per day" solution: "Network of geographically distributed stations"
• name: no_command_verification problem: "Erroneous commands sent without detection" solution: "Mandatory echo check and authorization"
• name: ignoring_weather problem: "Rain fade causes link dropout" solution: "Weather monitoring and adaptive scheduling"
• name: no_telemetry_archive problem: "Historical data lost" solution: "Permanent archive with retrieval capability"
• name: manual_scheduling problem: "Human error and inefficiency" solution: "Automated scheduling with conflict resolution"

checklist: station_configuration: - "Antenna systems calibrated" - "Frequency coordination complete" - "Network connectivity tested" - "Backup power available" operations_readiness: - "Pass predictions generated" - "Contact schedule published" - "Telemetry definitions loaded" - "Command database verified" each_contact: - "Pre-pass checklist complete" - "Antenna tracking verified" - "Link margin acceptable" - "Telemetry flowing" - "Commands verified before uplink" - "Post-pass data archived"