舰船回转拖曳线列阵水听器阵位预测研究  

Predicting the Position of a Towed Array during the Steady Turning of Ship

作　　者：万文彬[1] 朱军[1] 曹留帅[1] 

机构地区：[1]海军工程大学舰船工程系,武汉430033

出　　处：《舰船电子工程》2013年第8期148-150,共3页Ship Electronic Engineering

摘　　要：拖曳线列阵水听器阵位定位问题是舰船辐射噪声自监测关键技术之一。论文基于观测基本原理建立了舰船回转拖曳线列阵水听器阵位的观测方程,推导了观测值与阵位参数的关系式。利用水动力学方法得到的舰船回转拖曳线列阵阵位为想定阵形,采用非线性最小方差曲线拟合的Levenberg-Marqudat(LM)算法,预报了舰船回转拖曳线列阵水听器的阵位。通过与想定阵形对比分析,研究了初始阵位偏离度和时间观测标准差等对水听器阵位预测精度的影响和规律。阵位预测的最大偏差出现在水听器阵位的两端,阵位中心点的预测与想定阵位一致,表明所提出的方法可实现仅基于本船信息预测舰船定常回转拖曳线列阵的阵位。Predicting the position of a towed array is one of the key technologies that actively measuring a ship＇s self--generated noise using beamforming technology. Establishing observation equation in the steady turning of ship, according to the fundamental principles of a- coustic measurement. Deducing the relationship between the column of observation and array position parameters. Using a coupling dynamical model for a warship＇s towed cable--array system predicts the position of array, presumes it as the true position. Making use of the standard Levenberg--Marqudat（LM） algorithm to predict the position of array. Researching the accuracy and laws of prediction of position in different initial array position and time observation errors, by analyzing the difference between the position of prediction and true. The maximun error of prediction occurred at both ends of array. The result demonstrate that the algorithm of this paper can predict the position of towed array according to the informations generated by itself

关 键 词：舰船 拖曳线列阵 水听器 阵位 LM算法 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]