基站受限下的深海高速目标入水点定位方法OA

To address the challenge of locating the entry point of a high-speed target in scenarios with an insufficient number of effective underwater base stations,a localization method for deep-sea high-speed entry target under limited base station conditions is proposed.First,a time-delay difference database is established using the direct wave,primary sea-surface reflected wave,and primary seabed reflected wave signals generated by the target acoustic source.The time-delay difference between signals received at two base stations is used to establish a time-delay difference matching library,and the squared error between the observed and matched time-delay difference is computed.Next,the squared errors for each combination are sorted in ascending order,and several positions corresponding to the smallest squared errors are selected.Based on the principle of proximity to the predicted location,the acoustic source position is solved.Finally,the feasibility and effectiveness of the algorithm are verified using measured data.The results show that when selecting the source position based on the principle of nearest proximity to the predicted location,the deviation from the actual position is approximately 260 m.When the predicted location is close to the actual source position,the average localization deviation obtained using the proposed algorithm is about 191 m.The findings provide theoretical and technical support for deep-sea acoustic source positioning solutions.