Abstract: The motion parameters of human-rifle system are the important basis of weapons ergonomic evaluation and human-rifle system dynamics modeling in the process of automatic weapon shooting. In order to obtain the motion characteristics of the human-rifle system and quantitatively estimate its motion parameters during shooting of a bullpup rifle, a new method is explored for measuring the human-rifle system, which is a high-speed photography combined with inertial measurement of motion tracker instrument（MTI）. The proposed method is to use the motion information of motion feature points of human-rifle system taken by a high-speed camera to obtain the motion law of the human-rifle system in the pitching through the correlation processing, and the muzzle response of the rifle is measured using MTI inertial measuring instrument at the same time. The motion results at the pitching angles measured by high-speed photography and MTI are compared and analyzed. The experimental results show that the results measured using high speed photography and MTI are believable.

Key words: ordnance science and technology, human-rifle system, motion parameter, high-speed photography, inertial motion measurement