Abstract: At present,the measurement method of geometric parameters in the assembly process of aerospace engines in China is that professionals operate Laser Tracker System or Electronic Total System to measure point by point,which has the disadvantage of low measurement efficiency.An efficient measurement method of geometric parameters of aerospace engine assembly process based on photogrammetry technology is proposed.The measurement principle of this measurement method is introduced,and then the measurement objectives of each measurement link of this method are explained in detail.Finally,the system accuracy of industrial digital photogrammetry technology in such applications is calculated through measured data,which proves the feasibility of this measurement method.

Key words: Digital photogrammetry, High-accuracy survey, Fast measurement, Space engines, Line of thrust