【摘要】 针对普通磁力仪测量磁场的梯度存在受背景磁场的影响大,从而导致测量精度低的问题,采用三端式磁通门技术和双探头的结构型式,试制1种三端式磁通门磁力梯度仪,其对背景磁场和磁强梯度均实现闭环测量.试验数据表明,背景磁场的干扰得到有效的消除,从而提高测量精度,且电路的稳定性能良好.更多还原

【Abstract】 To the problem of the low precision of common magnetometers caused by the influence of the background magnetic field,a new fluxgate gradiometer which is based on the technique of the three-tip fluxgate and the structure-type of two sensors is developed.Its measuring systems of the background magnetic field and the magnetic grads are closed loops.It is showed by the experimental results that the influence of the background magnetic field is mostly eliminated,the precision is improved,and the stability of the gradiometer circuitry is good.更多还原