Integrated Adaptive Frequency-Hopping Wireless Communication System for Drone Swarms

Översikt

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.

---

Nyckelfunktioner

• Multi-Node Support: Operates with up to 15 airborne units (air nodes) simultaneously.
• High-Quality Video Transmission: Stödjer 1080P @ 60 fps digital video streaming via Ethernet.
• Telemetry Integration: Kompatibel med:
  • Sbus (100000 baud, inverted)
  • UART TTL (460800 baud)
• Låg latens: End-to-end delay < 0.2 sekunder.
• Lång räckvidd: 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.

---

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.

---

Frekvensband

Supported operational bands include:

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

---

Prestanda & Pålitlighet

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

---

Power Specifications

Luftenhet

• Strömförsörjning: DC 12–24 V
• Energiförbrukning: ≤. 25 W
• RF uteffekt: ≥ 1 W (30 dBm)

Ground Station

• Strömförsörjning: DC 12–24 V
• Energiförbrukning: ≤. 150 W
• RF uteffekt: ≥ 20 W (43 dBm)

---

Physical Specifications

Luftenhet

• Vikt: ≤. 75 g
• Mått: ≤. 50 × 50 × 20 mm

Ground Station

• Vikt: ≤. 2 kg
• Mått: ≤. 240 × 240 × 75 mm

---

Environmental Conditions

• Drifttemperaturområde: -30° C till +50 ° C

---

Gränssnitt

Luftenhet

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

Ground Station

• Output to Operator: Eternet (digital preferred)

---

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

---

Efterlevnad & Testing

The system is validated through the following tests:

1. Simultaneous Operation Test:
   All 15 air units transmit video and telemetry continuously for 10 minuter.
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. Storlek & 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.

---

Ansökningar

• Drone swarm operations
• Long-range FPV missions
• Surveillance and reconnaissance
• Industrial inspection
• Emergency response and search & rädda

---

Slutsats

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