Measurement of the location of impact point in bombing systems

In this paper, an effective method is presented to measure the location of impact point in bombing systems. With supposition that the motion of bomb in terminal trajectory can be approximated as a motion with constant acceleration, the trajectory equation of the bomb is constructed and the relation between distance-delay of the echo signal and the parameters of the bomb trajectory is derived. Simultaneously, the relation between Doppler frequency and the parameters of the bomb trajectory is also derived. Based on these relations, the measurement of the location of impact point can be easily solved as a nonlinear least square fitting problem of distance-delay and Doppler frequency. Finally, simulation results show the effectiveness of the proposed method.