Abstract:

A radial acceleration estimation method based on the rate of change of pulse period estimation with coherent pulse train is proposed. In order to solve misjudgment of pulse edage caused by mismatch between electronic reconnaissance receiver sampling interval and pulse repeat interval, a subsample time delay estimation algorithm is used to estimate the time delay between pulses. The least square method is used to extract radial acceleration from accurate time of arrival (TOA) estimates. The radial acceleration estimation error lower bound of the proposed method is derived. The simulation results show that the performance of radial acceleration estimation is excellent and close to the error lower band. The proposed algorithm is suitable for wideband signals such as linear frequency modulation signal and non-linear frequency modulation signal.