Abstract:

Take object signal phase difference and carrier frequency as observation variables and utilizing phase difference rate of change passive location method goes to object.Because of disturbance, measurement data may be missed and the that passive location precision of phase difference change rate rapidly declines.A least squares curve fitting method is presented to fill up missing data. This method can not only be provided with highly precise filling ability but also be good at stable performance no matter what form of missing data will be. Therefore taking this method we can realize fast and exact passive location of phase difference change rate. Simulation results show that the method can reach corresponding passive location error 2.14％ within 5 s.

Key words: missing data, least squares method, urve fitting, phase difference rate of change, fast location