中文摘要：

针对磁张量系统载体产生的磁张量值对系统测量精度产生很大影响的问题,以及现有磁补偿模型存在非线性、分体式和参数多的问题,提出一种磁张量系统载体的一体化线性磁张量补偿方法.分析了载体硬磁材料产生固有磁张量值和软磁材料产生感应磁张量值的微观机理,并推导了相应的数学表达式,结合固有磁场影响和感应磁场影响建立了载体磁张量补偿模型.模型中含有20个载体磁张量补偿系数,对模型求解得到补偿系数,结合三分量磁场测量值即可达到对载体磁张量的补偿.实测实验表明,磁张量补偿方法计算得到的载体磁张量值与载体实际产生的磁张量值仅差32nT/m,可以有效完成对磁张量系统的载体磁张量补偿.

英文摘要：

To solve the problem that the measurement accuracy of the magnetic tensor detection system is influenced by the magnetic tensor generated by the carrier,and existence of nonlinearity,separated patterns and too many coefficients in the existing compensation model,this work proposes an integrated linear compensation method for the magnetic tensor carrier.First,the magnetic tensor system is built,and the whole magnetic tensor is replaced by the expression of 5elements.The magnetization characteristic of the hard magnetic material that comprises the carrier is analyzed,and the connatural magnetic field from carrier hard magnetic material does not vary with the change of carrier attitude and position.The mathematic model of the connatural magnetic field is constrcuted.The mechanism of the induced magnetic field from carrier soft magnetic material is analyzed,and the induced magnetic field is equivalent to the magnetic field superposition of several magnetic dipoles.The mathematic expression of the induced magnetic field is derived.The carrier magnetic tensor compensation model is established combined with the influence of the connatural magnetic field and the induced magnetic field,andthe magnetic tensor compensation model with 20 coefficients is established by variable substitution and combined reduction.If we rotate the magnetic tensor system and carrier more than 4attitudes under the equal magnetic field environment,and put the measured value of the magnetic tensor and magnetic field components into the carrier magnetic tensor compensation model,we can get the 20 magnetic tensor compensation coefficients.When the magnetic tensor system is applied to search the target,we can calculate the magnetic tensor value of the carrier with the 20 magnetic tensor compensation coefficients and the three components of the magnetic field.The magnetic tensor value of the target can be determined with the total magnetic tensor value subtracting the magnetic tensor value of carrier,and the carrier magnetic tensor compensation is rea