Solving the Problem of High-Precision Spatial Orientation of Mobile Objects Based on Satellite Measurements in the Pre-Launch Preparation Mode

The problem of determining the spatial orientation of moving objects using high-precision satellite measurements in the prelaunch preparation mode (preparation for movement) is considered. The solution to the problem is obtained in the form of analytical dependencies of the orientation angles of the instrument coordinate system (CS) of a moving object relative to the geographic CS from secondary satellite measurements of the coordinates of spatially distributed navigation receivers located on the object. The coordinates of the navigation receivers are determined in the geocentric CS in the high-precision positioning mode (in particular, network or inverse RTK ). A numerical estimate of the accuracy of the proposed method is given, illustrating the efficiency of its practical application.