Small-sized unmanned plane withdrawing and releasing method based on tethered balloon

The invention relates to the technical field of unmanned plane withdrawing and releasing, and in particular relates to a small-sized unmanned plane withdrawing and releasing method based on a tethered balloon. The method comprises the following steps: mounting a small-sized unmanned plane at the lower part of the tethered balloon; lifting the small-sized unmanned plane to a certain height through the tethered balloon; after a power device of the small-sized unmanned plane is started, releasing the small-sized unmanned plane; after the small-sized unmanned plane dives and accelerates to safety speed, controlling the small-sized unmanned plane to level off through an empennage; after the small-sized unmanned plane completes a flying task, judging the position of the tethered balloon by the small-sized unmanned plane through a navigation positioning system or a photoelectric load or radar arranged on the small-sized unmanned plane, and hooking the tethered balloon through a rope hook arranged on the small-sized unmanned plane; and enabling the tethered balloon to carry the small-sized unmanned plane to be landed. Due to the scheme, the requirement on an unmanned plane withdrawing and releasing device is reduced, so that the effective load weight of the small-sized unmanned plane is increased, and the take-off and landing precision of the small-sized unmanned plane is improved; and a reliable and feasible method is supplied for withdrawing and releasing the small-sized unmanned plane.