【作者】 师俊杰； 孙大军； 吕云飞； 穆琳； 贵瑞晓；

【Author】 SHI Jun-jie;SUN Da-jun;LV Yun-fei;MU Lin;GUI Rui-xiao;Science and Technology on Underwater Acoustic Laboratory,College of Underwater Acoustic Engineering,Harbin Engineering University;92956 PLA troops;

【机构】 哈尔滨工程大学水声技术重点实验室水声工程学院； 92956部队；

【摘要】 探讨研究了基于阵不变量的垂直阵被动定位方法,从射线声学的角度推导给出了浅海波导多途结构条件下垂直阵被动定位的基本原理。利用短时时延波束形成得到垂直阵接收信号相对时延t与目标俯仰角φ间的关系,在峰值检测的基础上进行τ-φsec的最小二乘线性回归,从而实现目标方位的估计。数值仿真和湖试试验验证了此定位方法的有效性。更多还原

【Abstract】 A passive localization method by the vertical line array based on the array invariant was discussed in this paper.Its basic localization principle was derived according to the ray acoustic theory in the shallow water waveguide.The relation between the relative time delay t and the target elevation angle φ for the received signal by a vertical array was obtained firstly by the short-time time-delay beam-forming technology.Then the target could be localized after the peak detection processing and linear regression for t-φ sec on the basis of Least Mean Square criteria.The method had been testified its effectiveness through the numerical simulation and a lake trial.更多还原