Lever arm calculating algorithm for efficient and precise vector determinations

In the orthophoto processing one of key steps is aerial triangulation during which exterior orientation coefficients photographs are determined by adjustment. order to be able do this with sufficient accuracy, in addition knowing internal elements cameras, we need eccentricity vectors GNSS antennas, IMU and sensors relation each other, i.e. lever arms. Characteristic points airplane installed instruments measured using 3D polar method, while traditionally a geometric technique. paper will present an algorithm uses analytical approach for much quicker more precise results.