A good planning is a key factor for the success of a GPS survey. A realistic forecast of the DOP requires to take into account the obstacles that can hide part of the sky. This is specially true in a mountaneous region (natural obstacle) and in the urban area (artifact obstacle). In practice it is relatively easy to take into account the various obstacle in the planning of a static survey, but it is more difficoult to do the same for a kinematic survey. In the present work an authomatic procedure for the planning of a kinematic survey has been realized with a dedicated procedure inside a GIS. The realized procedure is interfaced with the almanac, a DHM for the planning in M.A. and a carthographic data base for the planning in urban areas (still in project) and computes the DOP with the standard algorithm for the points in a given trajectory.