How to choose drone transmission for building drone?
The transmission quality of your drone is crucial to capturing clear and stable aerial footage. Therefore, it is very important to choose what kind of link. In addition to considering the budget, you must also consider factors such as transmission power, Frequency Band and transmission distance. The following are some key factors that need to be considered to achieve the best drone transmission.
Frequency Band: Drones typically use 2.4 GHz or 5.8 GHz radio frequency bands for transmission. 2.4 GHz provides better range, but 5.8 GHz offers less interference in crowded areas. Some advanced drones support both bands for flexibility.
Transmission Range: Look for a drone with a transmission range that meets your needs. Higher-end models can transmit video over several miles, while cheaper drones may have shorter ranges.
Transmission Technology: Digital transmission technologies like DJI's OcuSync and Lightbridge or Skydio's HD video link provide superior quality compared to analog systems. They offer low latency and resistance to interference.
Antenna Configuration: Drones with multiple antennas, especially those with beamforming capabilities, can provide better signal strength and coverage. Antenna placement is also crucial for signal stability.
Transmission Power: A drone with higher transmission power can maintain a stable connection over longer distances. However, local regulations may limit the maximum power output for drones.
Interference Handling: Look for a drone that can automatically switch to less crowded channels or frequencies to reduce interference. This is especially important in urban areas with many Wi-Fi signals.
Latency: Low latency is crucial for real-time video transmission. High-end drones often have minimal latency, which is essential for tasks like FPV (First Person View) flying and professional cinematography.
Resolution and Frame Rate: Ensure the drone's transmission system can handle the resolution and frame rate you require for your video footage. Many drones support 720p or 1080p at 30fps, while higher-end models can handle 4K at 60fps or more.
Transmission Mode: Some drones offer dual transmission modes, allowing you to switch between a high-quality video feed for framing shots and a lower quality, lower-latency feed for flying.
Obstacle Avoidance: Drones with obstacle avoidance sensors can help maintain a stable transmission connection by preventing collisions that might disrupt the signal.
Signal Boosters: In some cases, you can use signal boosters or range extenders to increase the transmission range of your drone. These are typically available as accessories.
Environmental Considerations: Keep in mind that transmission quality can be affected by environmental factors such as buildings, trees, and interference from other electronic devices. Fly in open areas for the best transmission results.
TDD bi-directional link with video/telemetry/RC
Receiving diversity and dynamic antenna switching
H.264&H.265 video compression&decompression
Low level re-transmission and adaptive frequency hopping
AES 128&AES256 encryption implemented on FPGA
Bandwidth: 2.5MHz(uplink) ； 10MHz(downlink)
Power: 150km37dBm/200km 40dBm
Constellation: BPSK； QPSK； 16QAM
FEC: LDPC(1/2， 2/3， 3/4， 5/6)
Downlink throughput: 2.3Mbps~10Mbps(10MHz)
Uplink throughput: 115200bps
Working temperature: -20°C~50°C
Video Interface: Ethernet; Serial； PPM/S.bus；USB