Abstract: An aircraft pose estimation method based on visual measurements of incomplete cooperation object using electro-optical platforms was proposed. By establishing a visual measurement aircraft pose estimation model for electro-optical platforms, an artificial cooperative icon based on hierarchical tessellated grid configuration was designed, and considering the sub-pixel corner point detection of feature points under the condition of complete cooperative object due to complex illumination, the camera pose information relative to the datum plane was obtained by using the multi-point perspective estimation. Then, according to the angle information of the electro-optical platforms as well as the installation angle between the platforms and the carriers, the aircraft pose information relative to the datum plane was solved by using the coordinate system conversion. The simulation and flight test results show that the proposed pose estimation method can achieve high-precision and real-time measurement, and when the aircraft altitude is 1 m, the position error is less than 0.2 m and the attitude error is less than 0.5° .