Transfer alignment on space platform

Transfer alignment of slave inertial navigation system (INS) and the master INS on space platform was presented. Firstly, the navigation algorithms of the master and slave INS in J2000 inertial frame were introduced, and we gave the block diagram of the algorithms. Then, we derived the state equations of transfer alignment model, which include the error equations of slave INS and the equations of misalignment vector between the master INS and the slave INS. The attitude-match measurement equations were also derived. Finally, we obtained the optimal state equations of transfer alignment and the reduced-order state equations. The block diagram of transfer alignment showed the simulation methods. The simulation results show preliminarily that the misalignment vector precision is less than 1 arc second under the proper maneuver condition in 10 minutes.