Method and device for detecting standing-wave ratio in global microwave internet access system

The invention discloses a method and a device for detecting a standing-wave ratio in a global microwave internet access system. The method comprises the steps that: base band power input by a radio frequency channel and back power output by the radio frequency channel are obtained at the same time; the standing-wave ratio of the radio frequency channel is calculated according to the base band power and the back power; and whether the radio frequency channel goes wrong or not is judged through comparing the standing-wave ratio with the presupposed standard standing-wave ratio. By adopting the method and the device, the problem that in the prior art, the standing-wave ratio cannot be calculated accurately and effectively is solved, and accurate monitoring of the standing-wave ratio is guaranteed.