Application challenges of UAV wireless video transmission

Drones have become increasingly popular in recent years as professional tools, entertainment and air sports competitions. Unmanned aerial vehicles (UAVS) are the generic term for unmanned aerial vehicles (UAVS). They include many types of unmanned remotely controlled aircraft, including fixed-wing aircraft, helicopters and multi-rotor aircraft.

Professional drones are becoming more widely used, aerial photography during sporting events does not have to rely on expensive full-size helicopters, and estate agents often use drones to record. Drones can also spot missing people and can monitor habitats at risk of pollution. Power companies are using drones to inspect high-voltage lines, avoiding costly blackouts and dangerous manual climbs. Even conservative industries like rail companies are considering using drones to check track conditions in areas with restricted access. There are also delivery companies planning to deliver small packages by drone.

1. UAV operation technology

Drones can be piloted in two different ways; One is to visually observe the drone's line of sight, and the other is through a first-person perspective (FPV). In the FPV system, video images from an onboard camera are transmitted via radio to a personal video display on the ground in the form of a screen or video goggles.

2. Video transmission wireless technology

Wi-Fi can be used to transmit signals over fairly short distances. Wi-Fi signals can range from 300 meters to 2,000 meters, depending on the device and conditions. Transmission range can vary due to a number of factors:

Transmitter power, the larger the antenna, the farther the signal radiation, the smaller the attenuation;

Antennas, arranged in ascending order of power Whip(or wire), Chip, PCB or external (via U.F.L or RPSMA connector);

Frequency is used, usually the lower the frequency, the further the signal can travel.

The environment, surrounding trees, buildings, direct line of sight, atmospheric conditions, etc. can negatively affect Wi-Fi signal range.