“…\iVhen the assignment is expended from 2D to 3D, it can be seen that there is a set of events who share the same track to measurement asso iation Xi. For example, with respect to a fixed measurement-to-track association e.g., event i, each Doppler assignment is an valid candidate.,The same method has been applied to the Interacting iVIultiple :-Iodel (IMf-.I) JPDA in (Bojilov et at.. 2003) (Bojilov et al. 2002).…”