Description of symmetrical prolate ellipsoid magnetic signature parameters-Be = 50 mT, I = 70 deg, z = 10 m, q = 90 deg, j = 135 deg, a =4 m, e = 4, mr = 100

The Earth magnetic field (Fig.1): BE – total magnetic flux density, BEx – x component of the Earth magnetic flux density, BEy = 0  y component of the Earth magnetic flux density, BEz – z component of the Earth magnetic flux density, I – inclination of the Earth magnetic field.
The symmetrical prolate ellipsoid (Fig.2): L – length of ellipsoid, a – radius of ellipsoid, e – unidimensional coefficient, q - vertical angle, j - horizontal angle.
For each scenarios there are following files:
Per_50%Mx_Bx_[BE]_[I]_[z]_[q]_[j]_[a]_[e]_[mr]             Bx – component of the ellipsoid magnetic flux density [nT]
Per_50%Mx_By_[BE]_[I]_[z]_[q]_[j]_[a]_[e]_[mr]            By –  component of the ellipsoid magnetic flux density [nT]
Per_50%Mx_Bz_[BE]_[I]_[z]_[q]_[j]_[a]_[e]_[mr]             Bz – component of the ellipsoid magnetic flux density [nT]
Per_50%Mx_x_[BE]_[I]_[z]_[q]_[j]_[a]_[e]_[mr]               x coordinate [m]
Per_50%Mx _y_[BE]_[I]_[z]_[q]_[j]_[a]_[e]_[mr]              y coordinate [m]
were:
BE [mT], I [deg], z [m], q [deg], j [deg], mr – relative magnetic permeability
Per_50%Mx – permanent magnetization of an ellipsoid in x direction is equal 50% induced magnetization for q = 90 deg and j = 0 deg
For the following parameters: Be = 50 mT, I = 70 deg, z = 10 m, q = 90 deg, j = 135 deg, a =4 m, e = 4, mr = 100
The names files are:
Per_50%Mx_Bx_50_70_10_90_135_4_4_100      Bx – component of the ellipsoid magnetic flux density [nT]
Per_50%Mx_By_50_70_10_90_135_4_4_100       By – component of the ellipsoid magnetic flux density [nT]
Per_50%Mx_Bz_50_70_10_90_135_4_4_100       Bz – component of the ellipsoid magnetic flux density [nT]
Per_50%Mx_x_50_70_10_90_135_4_4_100          x coordinate [m]
Per_50%Mx_y_50_70_10_90_135_4_4_100         y coordinate [m]
For the following parameters: Be = 50 mT, I = 70 deg, z = 10 m, q = 90 deg, j = -90 deg, a =4 m, e = 5, mr = 100
The names files are:
Per_50%Mx_Bx_50_70_10_90_m90_4_5_100  Bx – component of the ellipsoid magnetic flux density [nT]
Per_50%Mx_By_50_70_10_90_m90_4_5_100  By – component of the ellipsoid magnetic flux density [nT]
Per_50%Mx_Bz_50_70_10_90_m90_4_5_100  Bz – component of the ellipsoid magnetic flux density [nT]
Per_50%Mx_x_50_70_10_90_m90_4_5_100     x coordinate [m]
Per_50%Mx_y_50_70_10_90_m90_4_5_100     y coordinate [m]

地球磁场（图1）：BE——总磁通密度（total magnetic flux density），BEx——地球磁通密度x分量，BEy=0——地球磁通密度y分量，BEz——地球磁通密度z分量，I——地球磁场倾角。
对称长旋转椭球体（symmetrical prolate ellipsoid，图2）：L——椭球长度，a——椭球半径，e——一维系数，q——天顶角（vertical angle），j——水平方位角（horizontal angle）。
针对每个场景，包含以下文件：
Per_50%Mx_Bx_[BE]_[I]_[z]_[q]_[j]_[a]_[e]_[mr]：椭球磁通密度x分量（单位：纳特斯拉[nT]）
Per_50%Mx_By_[BE]_[I]_[z]_[q]_[j]_[a]_[e]_[mr]：椭球磁通密度y分量（单位：纳特斯拉[nT]）
Per_50%Mx_Bz_[BE]_[I]_[z]_[q]_[j]_[a]_[e]_[mr]：椭球磁通密度z分量（单位：纳特斯拉[nT]）
Per_50%Mx_x_[BE]_[I]_[z]_[q]_[j]_[a]_[e]_[mr]：x坐标（单位：米[m]）
Per_50%Mx_y_[BE]_[I]_[z]_[q]_[j]_[a]_[e]_[mr]：y坐标（单位：米[m]）
其中各参数的单位如下：
BE：毫特斯拉[mT]，I：角度[deg]，z：米[m]，q：角度[deg]，j：角度[deg]，mr——相对磁导率（relative magnetic permeability）。
Per_50%Mx的定义为：当q=90°、j=0°时，椭球沿x方向的永久磁化强度等于对应感应磁化强度的50%。
针对以下参数组合：BE=50 mT，I=70 deg，z=10 m，q=90 deg，j=135 deg，a=4 m，e=4，mr=100，对应的文件名如下：
Per_50%Mx_Bx_50_70_10_90_135_4_4_100：椭球磁通密度x分量[nT]
Per_50%Mx_By_50_70_10_90_135_4_4_100：椭球磁通密度y分量[nT]
Per_50%Mx_Bz_50_70_10_90_135_4_4_100：椭球磁通密度z分量[nT]
Per_50%Mx_x_50_70_10_90_135_4_4_100：x坐标[m]
Per_50%Mx_y_50_70_10_90_135_4_4_100：y坐标[m]
针对以下参数组合：BE=50 mT，I=70 deg，z=10 m，q=90 deg，j=-90 deg，a=4 m，e=5，mr=100，对应的文件名如下（负角度以m前缀表示）：
Per_50%Mx_Bx_50_70_10_90_m90_4_5_100：椭球磁通密度x分量[nT]
Per_50%Mx_By_50_70_10_90_m90_4_5_100：椭球磁通密度y分量[nT]
Per_50%Mx_Bz_50_70_10_90_m90_4_5_100：椭球磁通密度z分量[nT]
Per_50%Mx_x_50_70_10_90_m90_4_5_100：x坐标[m]
Per_50%Mx_y_50_70_10_90_m90_4_5_100：y坐标[m]