Title: The target motion parameters estimation based on the acoustic field interference structure similarity match

Author(s): DA Lianglong; XU Guojun; HAN Mei; ZHANG Lin; FAN Peiqin;

Affiliation(s): Navy Submarine Academy; Pilot National laboratory for Marine Science and Technology; College of Meteorology and Oceanology, National University of Defense Technology;

Abstract: A spectral sequence matched algorithm based on acoustic field interference structure is proposed to estimate the target motion parameters. According to the longitudinal correlation of the acoustic field using the spectral sequences of different frequencies obtained from the target LOFAR spectrogram and the target range solution vector obtained from the two-azimuth and two-range target motion parameters calculation method, a matching cost factor of the spectral sequences similarity is constructed to estimate the target motion parameters. Both the numerical simulation and the experimental data analysis show that the initial range, course and speed can be clearly presented in the visual distribution diagram of target motion parameters. The results demonstrate that the algorithm is simple, efficient and robust to the azimuth errors.