Abstract: Aiming at the target handover between the midcourse and terminal guidance in the process of ship-air missile intercepting target over the horizon guided by ship-ship cooperative guidance, a constraint condition was proposed for successful target handover. Firstly, projecting the missile-target line of sight angle vector to a corresponding rotation plane, a calculation model was established for the predetermined pointing angle of the seeker antenna to be suitable for the case of large predetermined pointing angle. And then, an error model was established based on variance analysis method for the predetermined pointing angle of the seeker antenna, and the error sources were analyzed combined with the cooperative guidance operation information flow. Finally, applying probability theory and permutation combination method, a success probability model of single target handover and multiple target handover were established. The simulation results verify the correctness of the predetermined pointing angle calculation error model and the target handover success probability model, as well as its effectiveness in reducing the predetermined pointing angle error and improving the target handover success probability.