Abstract: Aiming at the difficult problem of obtaining the balance towing position of the refueling hose under flight conditions, a set of image-based method for measuring balance towing position of aerial refueling hose was designed. By installing an airborne multichannel and high-definition image measurement system on the tanker to obtain the moving images of the refueling hose in the air refueling process, and researching on the key technologies such as the synchronous acquisition of the multi-camera, the camera calibration with a large depth of field, and the recognition and tracking technology of the refueling taper sleeve without reference point, the accurate measurement of the balance towing position of refueling hose was realized. The simulated experimental results show that the measurement accuracy of this scheme is better than 5 cm, which meets the accuracy requirements of the flight test.