Integrated Adaptive Frequency-Hopping Wireless Communication System for Drone Swarms

Oversigt

This system is designed to enable reliable, simultaneous transmission of high-definition video and telemetry data from multiple UAVs to ground control stations. It is optimized for FPV drone platforms (including Betaflight and Kakute flight controllers) and supports long-range, low-latency communication in complex electromagnetic environments.

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Nøglefunktioner

• Multi-Node Support: Operates with up to 15 airborne units (air nodes) simultaneously.
• High-Quality Video Transmission: Bakker op 1080P @ 60 fps digital video streaming via Ethernet.
• Telemetri -integration: Kompatibel med:
  • Sbus (100000 baud, inverted)
  • UART TTL (460800 baud)
• Lav latens: End-to-end delay < 0.2 sekunder.
• Lang rækkevidde: Reliable transmission up to 15 km.
• Adaptive Frequency Hopping: Intelligent pseudo-random hopping based on real-time RF environment analysis.
• Digital Modulation: Ensures robust and efficient spectrum usage.

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System Architecture

• Topologi: Star network configuration
• Komponenter:
  • 15 Air Units (UAV-mounted)
  • 1 or multiple Ground Control Stations
• Frequency Management: Operates across multiple non-overlapping bands to minimize interference.

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Frekvensbånd

Supported operational bands include:

• 900–1100 MHz (valgfri: 800–1100 MHz, 950–1200 MHz)
• 1200–1400 MHz (valgfri: 1300–1500 MHz)
• 2400–2600 MHz (valgfri: 2100–2200 MHz)
• 3300–3500 MHz (valgfri: 2900–3900 MHz)
• 5800–6000 MHz
• 6000–7000 MHz

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Præstation & Pålidelighed

• Stable operation in urban environments og moderate RF interference (SNR ≤ 0).
• Maintains synchronization during frequency hopping.
• Continuous multi-channel data reception without interruption.

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Power Specifications

Luftenhed

• Strømforsyning: DC 12–24 V
• Strømforbrug: ≤ 25 W
• RF udgangseffekt: ≥ 1 W (30 dBm)

Ground Station

• Strømforsyning: DC 12–24 V
• Strømforbrug: ≤ 150 W
• RF udgangseffekt: ≥ 20 W (43 dBm)

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Fysiske specifikationer

Luftenhed

• Vægt: ≤ 75 g
• Dimensioner: ≤ 50 × 50 × 20 mm

Ground Station

• Vægt: ≤ 2 kg
• Dimensioner: ≤ 240 × 240 × 75 mm

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Environmental Conditions

• Driftstemperaturområde: -30° C til +50 ° C.

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Grænseflader

Luftenhed

• Video input: 100M Ethernet (SH1.0 4-pin)
• Telemetri:
  • Sbus
  • UART TTL

Ground Station

• Output to Operator: Ethernet (digital preferred)

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Adaptive Frequency-Hopping Technology

• Real-time spectrum sensing and channel occupancy analysis
• Dynamic pseudo-random hopping sequence generation
• Continuous synchronization between air and ground units
• Maintains stable video and telemetry transmission under interference

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Overholdelse & Testing

The system is validated through the following tests:

1. Simultaneous Operation Test:
   All 15 air units transmit video and telemetry continuously for 10 minutter.
2. Latency Test:
   Verified under 15 km range and >10 MHz bandwidth.
3. Compatibility Test:
   Works with SBUS, CRSF, and ELRS protocols.
4. Frequency Compliance:
   Operates strictly within designated frequency bands.
5. Størrelse & Weight Verification:
   Meets all physical constraints.
6. Temperature Test:
   Fully functional across specified temperature range.
7. Power Consumption Test:
   Within defined limits for both air and ground units.
8. Interference & Hopping Test:
   Demonstrates stable communication under broadband interference using adaptive frequency hopping.

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Ansøgninger

• Drone swarm operations
• Long-range FPV missions
• Surveillance and reconnaissance
• Industriel inspektion
• Emergency response and search & redde

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Konklusion

This system delivers a powerful combination of high-performance video transmission, robust telemetry integration, og advanced adaptive frequency-hopping technology, making it an ideal solution for demanding multi-UAV operations in challenging environments.