Abstract：In order to overcome the deficiency of location failure caused by the lack of GPS satellites in dense urban areas and indoor environments, this paper presents a novel integrated navigation seamless positioning method combining GPS and DTMB.The fusion of multi-source signals based on Extended Kalman Filter Algorithm has been adopted to ensure the accuracy of positioning.Theoretical analysis and simulation results show that filtering trajectory consistents with the real trajectory basically, and that RMSE is about 20 m, Which can meet the demands for seamless positioning.Thus, the feasibility of combining GPS and DTMB has been verified in GPS partially blind areas.

Keyword：global position system (GPS) ;digital television multimedia broadcasting (DTMB) ;extended kalman filter (EKF) ;integrated navigation;