Key parameters of airborne weapon such as 3D velocity and 3D pose can be acquired by processing images taken by two high speed cameras mounted in the cabin,which is fixed under the fighter plane. In order to improve the precision and reliability of the video-metric system,a new design based on monocular and binocular video-metric is realized separately. Theory and measurement results show that the angular accuracy of this system is prior to 0.1 degree and its displacement accuracy is prior to 0.5 mm,which achieves the testing requirement in airborne weapon bombing/launching period.