Data Radio & Image Link

With the continuous development of drone technology, the requirements for the transmission range of high-bandwidth microwave data links have also increased. By increasing the power of the ground or airborne transmitters and enhancing the sensitivity of the receivers, it is no longer possible to meet the requirements for long-distance communication. Increasing the receiving gain of the ground tracking antennas is an effective solution, and it will not increase the weight and size of the onboard communication equipment. Directional communication antennas are widely used in the tracking and control communication of medium and long-range drones because they have high gain within the beam angle range. The antenna uses the method of directional radiation and receiving signals to focus energy on the useful range, reducing energy dissipation and increasing the transmission gain. However, due to the characteristic of directional transmission and reception signals, this type of antenna must be equipped with a guidance and tracking system to be used in the dynamic tracking communication application of drones. Up. By using GPS guidance method and brushless servo motor control, the one-dimensional azimuth servo control for directional antennas such as helical directional antenna (beam angle less than 20°, gain 15dB), octal directional antenna, and grid directional antenna can be achieved. This is more stable, more digitalized, and more cost-effective than using a single-channel single-pulse tracking system.