In order to overcome deficiency of location functional limitation of GPS in dense building urban areas, this paper adopts the new GPS/DTMB integrated navigation scheme, in view of the shortcomings of traditional two-dimensional dynamic modelthis paperthe planar variable-turn model under dimensional model, which is used as moving target maneuvering model, also, simulation the tracking effect under different particle numbers of 200 and 400 of particle filter(PF) algorithm, theoretical analysis and simulation results show that mean error of 200 particles is about 4.590 6 m, 400 particles is about 2.377 6 m, the filtering trajectory is consistent with the real trajectory basically, which has good location tracking effect, and the more particle numbers, the smaller mean error, standard deviation, variance, the smaller the error of the mean, standard deviation, variance, this means that location tracking precision is higher. These proved the feasibility of GPS/DTMB integrated navigation.