A target dynamic model based on TDOA form for multilateration(MLAT) system

As an effective way to mitigate NLOS, TDOA dynamic model plays a key role on Kalman filtering system. Traditional TDOA state model still exist some issues on the theory and practice. This paper proposes a new TDOA state model stemming from existing target nonmaneuver motion model in the Cartesian coordinate system. A related equation of TDOA state is derived based on Taylor series method. Simulation results testify that the estimation performances of the proposed TDOA state model are better than traditional ones.