Airborne Radio Data Link in UHF Band FHSS

Airborne Radio Data Link Requirment:

Frekvensbånd: Only UHF Band (225mhz~470mhz) eller (320mhz~470mhz)

Hopping Step: 50~100mhz
FHSS rate: 500~1000 Hop/s
With IFS (Intelligent Frequency Selection)
And Anti-Jamming

Range Distance: 150~200km
Lav latens: 2~5 ms
RF output Power: 5~10w
Kryptering: AES256
Receive Sensitivity: -110 dBm

Input: 2xRS232 (max Baudrate: 115200bps)

Only Serial Data Input (No Video Interface)

Mode: Point To MultiPoint (1To10)

The GCS (Master) Connect Full-Duplex To 10 UAV (Clients)

The UAV fly simultaneously next to each other. as SWARM.

Arbejdsspænding: 12-36V DC
Maximum acceleration: 4g
Airspeed: <1000 km / t
Without any GNSS , Wifi, BT

Requirment Number: 200~250unit

With STAR architecture, we don’t need mesh.

We want to control 10 Uav by one GCS, Every UAV has 2xRS232, in Ground side, we have 20xRS232, Point to MultiPoint only.

Airborne Radio Data Link System Requirements Summary

1. Frekvens & Modulation

• Band: UHF (225–470 MHz) eller narrowed (320–470 MHz).
• Hopping:
  • Trin: 50–100 MHz.
  • FHSS Rate: 500–1000 hops/sec.
• Anti-Jamming: Integrated with Intelligent Frequency Selection (IFS) for dynamic interference avoidance.

2. Performance Specifications

• Rækkevidde: 150–200 km.
• Latenstid: Ultra-low (2–5 ms).
• RF Power: 5–10 W.
• Kryptering: AES256.
• Følsomhed: -110 dBm (receiver).

3. Communication Architecture

• Mode: Punkt-til-multipunkt (1 GCS ↔ 10 Uavs).
• Topologi: STAR architecture (no mesh).
• Duplex: Full-duplex between GCS (mestre) and UAVs (clients).
• Swarm Operation: Bakker op 10 UAVs flying simultaneously in close proximity.

4. Grænseflader

• Input:
  • UAV: 2x RS232 per unit (maks 115,200 bps).
  • GCS: 20x RS232 (aggregate for 10 Uavs).
• Exclusions: No video, GNSS, Trådløst internet, or Bluetooth interfaces.

5. Miljømæssige & Operational

• Spænding: 12–36V DC.
• Robusthed:
  • Withstands 4g acceleration and airspeeds <1000 km / t.
  • Operates in GNSS-denied environments.

6. Antal

• Units: 200–250 systems.

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Key Design Highlights

• Anti-Jamming & IFS: Critical for reliability in contested/swarm environments.
• Lav latens: Enables real-time swarm control.
• STAR Topology: Simplifies network management (centralized GCS control).
• Legacy Compatibility: RS232 interfaces prioritize simplicity and backward compatibility.

This system is tailored forhigh-speed, secure, swarm-based UAV operations in challenging conditions.