TDD-FDD الإرسال غير المتماثل لتردد الوصلة الصاعدة والهابطة vcan2002

ميزة

• Support asymmetric transmission of uplink and downlink frequencies
• Support noise floor detection and automatic frequency selection
• Supports AES256 encryption
• Support long-distance large-bandwidth transmission

المعلمة

The channel can provide a capacity of 4Mbps, and the pod can set to 2Mbps

150km test video

التعليمات

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

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

• الوصلة الصاعدة (f2): 1.4 غيغاهرتز
• الوصلة الهابطة (f1): 17 غيغاهرتز

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

• تكساس (الوصلة الصاعدة): User configurable from 170 ميغاهيرتز إلى 6000 ميغاهيرتز
• آر إكس (الوصلة الهابطة): User configurable from 170 ميغاهيرتز إلى 860 ميغاهيرتز
• For RX frequencies over 860 ميغاهيرتز, an additional down-conversion stage is required.

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

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

أ: This system combines the best features of قوات الدفاع عن الديمقراطية (دوبلكس تقسيم التردد) و تد (دوبلكس بتقسيم الزمن) 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 (فيديو & 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, اختيار التردد التلقائي, adaptive bitrate, automatic retransmission, 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: يدعم ما يصل إلى 200 كم air-to-ground range and up to 16 ميغابت في الثانية عرض النطاق الترددي, allowing you to transmit clear HD video while simultaneously sending telemetry and control data in both directions.

بعبارات بسيطة: 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. ال قوات الدفاع عن الديمقراطية + TDD hybrid gives you the perfect balance: الكمون المنخفض + high efficiency + strong anti-interference performance, making it ideal for demanding drone applications such as power line inspection, الاستجابة للطوارئ, المسح الجوي, and long-range surveillance.