摘要
针对水中运动声源定位问题,建立了一种基于声场干涉结构谱向量相似度匹配的目标运动参数估计方法。结合声场干涉结构水平纵向相关特性,利用目标辐射噪声LOFAR谱图中不同频率的谱值序列,基于两方位-两距离目标运动要素计算方法获取的目标距离解向量,构造声场干涉结构谱向量相似度匹配代价因子,实现目标运动参数估计。仿真数据与试验数据验证结果表明:在绘制的目标运动要素解算结果可视化分布图中可清晰呈现出目标初距、航向和速度结果。该算法实现过程简单、解算效率高,对目标方位误差有较好的鲁棒性。
An matched algorithm based on acoustic interference structure is proposed to estimate the target motion parameters.The algorithm is based on the longitudinal-correlation of the acoustic field.Using the spectral vectors of different frequencies obtained from the target radiated noise spectrum,and the target range solution vector calculated from the two-azimuth and two-range method,a matching cost factor of the spectral vectors similarity is constructed to estimate the target motion parameters.Both the numerical simulation and the experimental data analysis indicate that the initial range,course and speed can be clearly presented in the visualization distribution of target motion elements.The results demonstrate that the algorithm is simple,efficient and robust to the azimuth errors.
作者
徐国军
笪良龙
赵建昕
张林
XU Guojun;DA Lianglong;ZHAO Jianxin;ZHANG Lin(College of Meteorology and Oceanology,National University of Defense Technology,Changsha 410073;Navy Submarine Academy,Qingdao 266199;Pilot National laboratory for Marine Science and Technology,Qingdcio 266237)
出处
《声学学报》
EI
CSCD
北大核心
2020年第4期527-534,共8页
Acta Acustica
基金
国家重点研发计划项目(2017YFB0202701)
国防科技创新特区项目(17-H863-05-ZT-001-024-01)资助。
