Passive radar using Digital Audio/Video Broadcast (DAB/DVB) signals with Orthogonal Frequency Division Multiplexing (OFDM) must contend with measurements of range and range-rate only (no, or very poor, angular information) and must deal with an added and unwonted measurement-illuminator-target association. But tracking systems using modified Joint Probabilistic Data As-sociation (JPDA) filters and using particle filters have been suggested and seem to work effectively to maintain tracks directly in the Cartesian domain. In this correspondence, we present an alternative Cartesian-domain tracking algorithm a version of the Probabilistic Multi-Hypothesis Tracker (PMHT), to contend with the extra-list data association in a natural way.