A mathematic model was proposed based on imaging characteristic of target in projectile borne CCD and attitude movement of projectile. The relative azimuth angle between projectile and target can be measured by the model. The relation between imaging trace of target and three axis movement frequency of projectil was deduced. The three axis turntable experiment was designed. The experimental data was processed according to the model and the frequency spectrum analysis. The results show that the relative azimuth, attitude characteristic and three axis movement frequency of projectile, can be obtained by the model. The study offers necessary parameters for trajectory correction for correction projectile.