Unmanned aerial vehicle relay transmission efficiency optimization method based on optimization variable decoupling

The invention discloses an unmanned aerial vehicle relay transmission efficiency optimization method based on optimization variable decoupling, and relates to an unmanned aerial vehicle relay transmission technology. The method comprises the following steps: firstly, constructing an air-ground bidirectional relay transmission scene comprising an air base station, an air relay and a ground base station, wherein the air base station and the ground base station serve as two source nodes and send signals to the air relay serving as a receiving node at the same time at the same frequency; then establishing a relay transmission energy efficiency optimization problem model by utilizing the transmitting power and the signal-to-noise ratio of each node, and decoupling the energy efficiency optimization problem model into a power sub-optimization problem and an air relay position sub-optimization problem; respectively iterating the power sub-optimization problem and the air relay position sub-optimization problem by ap