FULL-WAVE EM SIMULATION OF HUMAN BODY BLOCKAGE BY DENSE 2D ANTENNA ARRAYS

This dataset, created using FEKO software, serves to investigate the impact of human body blockage on electromagnetic (EM) fields as observed by receiver antennas arranged in dense 2D/3D arrays. The simulation scenario involves an Hertzian dipole emitting radiation at 2.4868 GHz and positioned at a height of 0.99 meters. Field measurements are taken over a 3D array with multiple 2D arrays at varying distances from the source. An anthropomorphic obstacle representing a human body is included, featuring dimensions and material properties based on muscle composition. Simulations are conducted with the body at different positions and orientations relative to source and receivers considering real and imaginary part of EM field samples. The scenario includes no additional obstacles.

For a 2D array at x=4m, simulations consider three body positions: (1) x=2m, y=0m, (2) x=2m, y=0.25m, and (3) x=2m, y=0.50m. Further simulations mimic micro-movements like translations along x and y axes by ±λ/4 increments and rotations at each position by angles 0°, 45°, 90°, and 135°, aiming to replicate real-life motions. In total, we simulate 3 positions, and for each of them, we consider 9 micro-positions (0 or ±λ/4 increments along x and/or y around the main position - the one with both increments equal to zero -) with 4 rotations for each. Therefore, there are a total of 3x9x4 simulations.

The entire scenario involves 3D layouts of receiver arrays, with 50 surfaces composed of 90x180 elements spaced by λ/10.

Instructions: 

The dataset comprises both .EFE files and MATLAB data, each representing a simulation position and containing real and imaginary components of the electric field received at each receiving point. Each file consists of a matrix sized 810000 x 6, where 6 denotes the real and imaginary components in the x, y, and z directions, and 810000 is derived from 90x180x50, representing the grid of receiving points.

Each file within the dataset is labeled to convey its parameters. For example, "x2_y0.25_dxpl4_dyml4" denotes the position (x=2 m, y=0.25 m). Moreover, "dxpl4" represents the increment along the x-axis by plus lambda/four. "dpml4" and "dp0" are alternative options that can replace "dxpl4" if the increment is negative or there is no increment along the x-axis.Similarly, "dyml4" denotes the decrement along the y-axis by minus lambda/four. "dypl4" and "dp0" can substitute "dyml4" to signify a different positive increment along the y-axis or no increment at all.

本数据集基于FEKO软件构建，旨在探究人体遮挡对密集二维/三维阵列接收天线所观测到的电磁（electromagnetic，EM）场的影响。仿真场景采用工作于2.4868 GHz的赫兹电偶极子（Hertzian dipole）作为辐射源，其架设高度为0.99米。场域测量通过在距辐射源不同距离处部署多组二维阵列，进而搭建三维接收阵列开展。仿真中引入基于肌肉组织成分确定尺寸与材料属性的拟人化人体障碍模型，仿真过程中将人体置于相对于辐射源与接收天线的不同位置与姿态，并同步采集电磁场样本的实部与虚部数值，且本次场景未包含其他额外障碍物。

针对x=4m处的二维阵列，仿真共设置3组人体主位置：(1) x=2m, y=0m；(2) x=2m, y=0.25m；(3) x=2m, y=0.50m。进一步的仿真通过沿x、y轴以±λ/4为步长的平移，以及在每个主位置上分别以0°、45°、90°、135°进行旋转，来模拟真实人体的微动行为。本次仿真总计包含3组主位置，每个主位置下对应9个微位置（以该主位置为基准，沿x、y轴分别施加0或±λ/4的位移增量），且每个微位置对应4种旋转姿态。因此总仿真次数为3×9×4次。

整个场景采用三维接收阵列布局，包含50个阵元表面，每个表面由90×180个阵元构成，阵元间距为λ/10。

本数据集包含.EFE格式文件与MATLAB数据两类文件，每类文件均对应一组仿真场景，存储了各接收点处接收电场的实部与虚部分量。每个文件均为810000×6的矩阵：其中6代表x、y、z三个方向的电场实部与虚部共6个分量，810000由90×180×50计算得到，对应接收点的总网格数。

数据集内的每个文件均通过文件名标注其仿真参数。例如，"x2_y0.25_dxpl4_dyml4"表示人体位置为(x=2m, y=0.25m)。其中，"dxpl4"代表沿x轴正方向移动λ/4的位移增量；若沿x轴为负增量或无增量，则可分别用"dpml4"与"dp0"替代"dxpl4"。同理，"dyml4"代表沿y轴负方向移动λ/4的位移增量，若需表示沿y轴正方向的增量或无增量，则可分别用"dypl4"与"dp0"替代"dyml4"。