Maxwell's equations conserve certain properties-the magneticfield intensity, the electric displacement field and the Poynting vector that describes the electric flux of an electromagnetic field.
麦克斯韦方程中有某些特性是恒定不变的——磁场强度、电位移场以及描述电磁场电通量的坡印廷矢量。
2
Magnetic gradient tensor is that the three components of the magneticfieldvector space rate of change, is able to do well for the dipole localization and tracking.
磁力梯度张量表示的是磁场矢量三个分量的空间变化率，能够很好地用于偶极子场源的定位跟踪。
3
Magneticfieldvector is a function of the position where the satellite stays. Thus autonomous navigation for small satellite can be achieved by measuring the magneticfieldvector.