Abstract: To solve the difficult of carrier tracking under the circumstances of high dynamic and weak signals, a new structure of high dynamic tracking loop is proposed based on Kalman filtering. In this paper, details of the loop are presented and the functions of all the blocks in the loop as well as parameter transmission among the blocks are discussed. Finally, compared with the FLL assisted PLL tracking loop, the simulation results indicate that the designed loop greatly improve the capability of tracking under the circumstances of high dynamic.

Key words: Kalman filtering, High dynamic GPS, Carrier tracking