Однонаправленная видеосвязь HD на расстояние 50 км. Задержка 50 мс, четыре частоты.

Вот спрос.

Нам нужна однонаправленная видеосвязь на 50 км.. Качество видео – HD, Video Latency 50 миллисекунды, Ability to work on 4 independent non-standard channels (частота) for video transmission.

For a unidirectional video link over 50 км с HD-качество, 50ms latency, и four independent non-standard channels, you will need a specialized long-range wireless transmission system. Here are some potential solutions:

1. Microwave or mmWave Links (Licensed or Unlicensed)

• Плюсы: Can provide high throughput, низкая задержка, and long-range capability.
• Минусы: Requires precise alignment and may need licensing.
• Example System: Ubiquiti AirFiber, Cambium Networks PTP 820

2. COFDM-based Wireless Video Transmitters

• Плюсы: Designed for broadcast, robust against interference, and can work on custom frequencies.
• Минусы: More expensive and may require custom tuning.
• Example System: Domo Tactical Communications (DTC), Vislink, Teradek Prism

3. Fiber Optic Link (If Feasible)

• Плюсы: Zero latency, highest reliability.
• Минусы: Expensive deployment over 50 км.

4. Custom SDR (Software-Defined Radio) Решение

• Плюсы: Can be configured for non-standard frequencies.
• Минусы: Requires significant R&Д, spectrum analysis, and tuning.

Ключевые соображения:

• Frequencies: What range of non-standard frequencies are available?
• Власть: What are the power and interference constraints?
• ЛОС (Линия видимости): 50 km needs a clear path or relay towers.
• Redundancy: Can you use multiple links for fail-over?

The recommended model is 1729, which meets almost all the needs of customers.

The customer’s requirement is to transmit 50 километры. If Vcan1729 is configured with a 5-watt amplifier, it supports a line-of-sight distance of 50 к 80 километры. This requires a certain height difference between the transmitter and the receiver, such as from an aerial drone to a ground receiving station or from a mountain top to the surrounding area.

Customers require HD video quality. Our Vcan1729 with HDMI input supports 1080p HD video input encoding and transmission.

The customer requires a delay of 50 миллисекунды. Наш 1729 is an ultra-low delay solution, which can control the delay from transmitter to receiver to as low as 30 миллисекунды. Its price will also be more expensive than the COFDM-908T with a delay of 150 к 200 миллисекунды. The specific choice depends on the customer’s needs and application scenarios.

Окончательно, the customer mentioned that he needed 4 different frequencies to choose from. Наш 1729 supports a 30MHz bandwidth frequency range, which means that if the operating frequency is centered at 595Mhz, its operating frequency range is 580Mhz~610Mhz. He can choose several other frequencies for transmission, such as 583Mhz, 589МГц, 595МГц, 601Мж, and 607Mhz. Of course, 595Mzh has the best transmission performance, because the power amplifier and antenna are customized within the range of +-15Mhz centered at 595Mhz.