Abstract: To tackle the problem of tracking a maneuvering emitter by a single passive observer, a method using the radial acceleration and angle measurements, combined with unscented transformation(UT) based interacting multiple-model(IMM) algorithm is proposed. The associated mathematical model and to measuring the approaches radial acceleration are also presented. Computer simulations are conducted to compare the proposed method with the traditional bearing only method and the method using the bearing and the bearing rate. Simulation results show that the proposed method is more effective.

Key words: maneuvering target tracking, passive location, radial accelerations, interacting multiple model, unscented transformation