Drone swarms Multi-node long-range video data radio link

Integrated Adaptive Frequency-Hopping Wireless Communication System for Drone Swarms

सिंहावलोकन

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.

प्रमुख विशेषताऐं

  • Multi-Node Support: Operates with up to 15 airborne units (air nodes) simultaneously.
  • High-Quality Video Transmission: समर्थन 1080P @ 60 एफपीएस digital video streaming via Ethernet.
  • टेलीमेट्री एकीकरण: के साथ संगत:
    • एसबीयू (100000 baud, inverted)
    • UART TTL (460800 baud)
  • कम अव्यक्ता: End-to-end delay < 0.2 सेकंड.
  • लंबी दूरी: Reliable transmission up to 15 किमी.
  • Adaptive Frequency Hopping: Intelligent pseudo-random hopping based on real-time RF environment analysis.
  • Digital Modulation: Ensures robust and efficient spectrum usage.

System Architecture

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

आवृत्ति बैंड

Supported operational bands include:

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

प्रदर्शन & विश्वसनीयता

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

Power Specifications

वायु इकाई

  • बिजली की आपूर्ति: DC 12–24 V
  • बिजली की खपत: ≤ 25 डब्ल्यू
  • आरएफ आउटपुट पावर: ≥ 1 डब्ल्यू (30 डी बी एम)

Ground Station

  • बिजली की आपूर्ति: DC 12–24 V
  • बिजली की खपत: ≤ 150 डब्ल्यू
  • आरएफ आउटपुट पावर: ≥ 20 डब्ल्यू (43 डी बी एम)

Physical Specifications

वायु इकाई

  • वजन: ≤ 75 जी
  • आयाम: ≤ 50 × 50 × 20 मिमी

Ground Station

  • वजन: ≤ 2 किलोग्राम
  • आयाम: ≤ 240 × 240 × 75 मिमी

Environmental Conditions

  • तापमान रेंज आपरेट करना: -30° C से +50 ° C

इंटरफेस

वायु इकाई

  • वीडियो इनपुट: 100M Ethernet (SH1.0 4-pin)
  • टेलीमेटरी:
    • एसबीयू
    • UART TTL

Ground Station

  • Output to Operator: ईथरनेट (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

Compliance & Testing

The system is validated through the following tests:

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

अनुप्रयोग

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

निष्कर्ष

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

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