## Abstrakt

The error in the local mean magnitude of the electric

field (E-field), due to the numerical anisotropy, obtained by the

finite-difference time-domain (FDTD) method is investigated. The

spatial averaging is applied over a cube. In order to quantify

the error, the numerical results are compared with theoretical

and measured ones. The comparison between the FDTD method

and theory is conducted for two empty rooms with perfect

electric conductor (PEC) walls at 3 and 5 GHz. It is found

that averaging over a cube with side length of 3.3 wavelengths

(λ

of the FDTD and theoretical E-field - maximum error below

23%, 95th percentile of the error below 6% and correlation

above 0.83. Measurements over a cube at 3 GHz in empty

and office environments are performed. The difference between

the averaged numerical and measured magnitude of the E-field

decreases with increasing the averaging stencil. For empty room

the maximum error in the local mean FDTD results is 46% and

for office scenario is 49% if the cube side length is 0.5λ

field (E-field), due to the numerical anisotropy, obtained by the

finite-difference time-domain (FDTD) method is investigated. The

spatial averaging is applied over a cube. In order to quantify

the error, the numerical results are compared with theoretical

and measured ones. The comparison between the FDTD method

and theory is conducted for two empty rooms with perfect

electric conductor (PEC) walls at 3 and 5 GHz. It is found

that averaging over a cube with side length of 3.3 wavelengths

(λ

_{0}) ensures a good matching between the local mean magnitudeof the FDTD and theoretical E-field - maximum error below

23%, 95th percentile of the error below 6% and correlation

above 0.83. Measurements over a cube at 3 GHz in empty

and office environments are performed. The difference between

the averaged numerical and measured magnitude of the E-field

decreases with increasing the averaging stencil. For empty room

the maximum error in the local mean FDTD results is 46% and

for office scenario is 49% if the cube side length is 0.5λ

_{0}.Originalsprog | Engelsk |
---|---|

Artikelnummer | 8392471 |

Tidsskrift | I E E E Transactions on Vehicular Technology |

Vol/bind | 67 |

Udgave nummer | 9 |

Sider (fra-til) | 7984-7993 |

Antal sider | 10 |

ISSN | 0018-9545 |

DOI | |

Status | Udgivet - 2018 |