Based on the airborne platform, the research on the measurement technology of moving base target is not without loss of generality. The methods and key technologies to improve the target measurement accuracy can be applied to airships, ships, vessels, vehicles and other moving platforms. However, the optical measurement based on the moving platform relies heavily on the position and attitude measurement accuracy of the platform itself. Therefore, aiming at the measurement environment of the airborne opto-electronic platform, a calibration camera unit is proposed to be installed on the UAV, and an attitude measurement system is formed by the active motion cross aim imaging of the calibration camera. According to the prior attitude information, position information, target UAV position information and target UAV miss distance, the attitude of UAV is calculated and measured. This paper first introduces the working principle of the whole system, and then deduces the attitude solution method in detail. Finally, through simulation, it is verified that this method can reach the attitude solution accuracy within 17 '. The method proposed in this paper is an effective supplementary means of range optical measurement, which lays a foundation for further research. 漏 2020 IEEE.