Transmission asymétrique de fréquence de liaison montante et descendante TDD-FDD vcan2002

Fonctionnalité

• Prend en charge la transmission asymétrique des fréquences de liaison montante et descendante
• Prise en charge de la détection du bruit de fond et de la sélection automatique de la fréquence
• Prend en charge le cryptage AES256
• Prend en charge la transmission longue distance à large bande passante

Paramètre

Le canal peut fournir une capacité de 4Mbps, et le pod peut être réglé sur 2 Mbps

150vidéo d'essai km

FAQ

Q: Can the uplink and downlink working frequencies be configured by the user?

UNE: For standard models, the working frequencies are factory preset and cannot be modified by the user.

• Liaison montante (f2): 1.4 GHz
• Liaison descendante (f1): 17 GHz

If your application requires user-adjustable frequencies, we recommend using the FDD transceiver module.

• TX (liaison montante): User configurable from 170 MHz 6000 MHz
• RX (liaison descendante): User configurable from 170 MHz 860 MHz
• For RX frequencies over 860 MHz, un supplément down-conversion stage is required.

Please select the appropriate model based on whether fixed or user-configurable frequency operation is needed.

Q: What are the advantages of the FDD + TDD hybrid technology in this video & data transmission system?

UNE: This system combines the best features of FDD (Duplex de la division de fréquence) et TDD (Duplex de division temporelle) to deliver superior performance for professional drone operations.

• Real-time two-way communication with ultra-low latency (FDD advantage): Separate frequencies are used for downlink (vidéo & data to ground) and uplink (control commands from ground). This enables true simultaneous transmission, so you get smooth live video and instant control response without any waiting or switching delays.
• High spectrum efficiency and flexible bandwidth allocation (TDD advantage): The system dynamically adjusts bandwidth between video and control/data as needed. This allows higher overall data rates and makes the best use of available radio spectrum.
• Excellent anti-interference capability and reliability: With real-time interference detection, Sélection de fréquence automatique, adaptive bitrate, retransmission automatique, and smart power control, the link remains stable even in complex environments with multipath interference or crowded radio frequencies.
• Long range and high-quality transmission: Prend en charge jusqu'à 200 km air-to-ground range and up to 16 mbps bande passante, allowing you to transmit clear HD video while simultaneously sending telemetry and control data in both directions.

En termes simples: Pure FDD offers excellent low-latency two-way performance but can be less spectrum-efficient. Pure TDD is very efficient and flexible but may introduce slight delays. le FDD + TDD hybrid gives you the perfect balance: faible latence + haute efficacité + forte performance anti-interférence, making it ideal for demanding drone applications such as power line inspection, intervention d'urgence, levé aérien, and long-range surveillance.