一种水下载体干扰磁场的空间差分补偿方法  

Spatial difference compensation method of underwater vehicle interference magnetic field

作　　者：赵塔 陈雨薇[1] 周志坚[1] 程德福[1] 

机构地区：[1]吉林大学仪器科学与电气工程学院,吉林长春130026

出　　处：《电机与控制学报》2016年第3期71-76,共6页Electric Machines and Control

基　　金：国家重大科研装备研制项目(ZDYZ2012-1-02)

摘　　要：在水下地磁导航技术中,载体的干扰磁场是影响地磁场测量的关键因素之一。为了实现对载体更好的航向控制以及提高地磁导航的精确度,需要对载体的干扰磁场进行补偿。针对传统模型方法不能全面描述干扰磁场种类的不足,改进了传统测量模型表达式,提出了一种对载体干扰磁场进行补偿的空间差分模型方法,并对方法中传感器不同的安装位置做了详细的对比分析。通过仿真对补偿方法进行了验证,加入最大25n T外界杂散干扰磁场后,差分补偿结果精确度为10n T,比传统补偿方法的精确度提高了两倍。研究结果对水下载体地磁导航方法在实际中的应用具有一定的指导意义。Vehicle interference magnetic field is one of the key factors of the geomagnetic field measurement in underwater geomagnetic navigation. In order to control course and improve the precision of geomagnetic navigation,it is necessary to compensate for vehicle interference magnetic field. Because the traditional model can＇t fully describe the interference magnetic field component,a new method was proposed based on a spatial difference model to compensate the interference magnetic field and to improve the compensation precision compared with the traditional model. The influence of the sensor installation location was analyzed and the best laying position of the magnetic sensors was found. To verify the proposed compensation method,a simulation experiment was carried out under the condition of ± 25 n T stray outside interference magnetic field,and the simulation result shows that the accuracy of the proposed method is 10 n T which is double than that of the traditional model compensation method. The proposed method was used to solve similar problems in underwater vehicle geomagnetic navigation.

关 键 词：水下地磁导航 干扰磁场补偿 传统模型 差分模型 

分 类 号：TM154.3[电气工程—电工理论与新技术]