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WallMan
The WallMan component offers a convenient facility to generate and edit vector building databases.
Materials
Further Information
Computation of the Empirical Values
Reflection Loss

Welcome
Release Notes
See what's new in the latest release.
Get Started
The WinProp Getting Started Guide contains step-by-step instructions on how to get started with WinProp.
Examples
The Altair installation directory contains a collection of examples that shows you WinProp concepts and essentials.
Introduction to WinProp
WinProp is a complete suite of tools in the domain of wireless propagation and radio network planning. With applications ranging from satellite to terrestrial, from rural via urban to indoor radio links, WinProp’s innovative wave propagation models combine accuracy with short computation time.
Typical Workflow in WinProp
View the typical workflows when working with propagation simulations in specific scenarios, how to add a network planning to a propagation simulation, include a receiver pattern, set up a time-variant scenario, include multiple-input multiple-output (MIMO) at both the base station and the mobile station, connectivity analysis of sensor networks and optimization.
WallMan
The WallMan component offers a convenient facility to generate and edit vector building databases.
- Introduction to WallMan
- Introduction to the Interface
- Using WallMan
- Materials
- Default Shortcut Keys
  View the default shortcut keys available for WallMan for faster and easier operation.
TuMan
The TuMan tool enables you to generate and modify tunnel scenarios.
AMan
Use AMan to generate, edit and analyze a single antenna. Superimpose multiple antennas radiating similar signals to determine the actual antenna pattern while taking into consideration the local environment.
ProMan
The ProMan component includes wave propagation models for different scenarios and network planning simulators for various air interfaces.
Methods
WinProp includes empirical and semi-empirical models (calibration with measurements possible), rigorous 3D ray-tracing models as well as the unique dominant path model (DPM).
Main Applications
In WinProp various air interfaces and applications are pre-defined: broadcasting, cellular, wireless access, WiFi, sensor networks, ICNIRP and EM compliance.
WinProp Utilities
The WinProp utilities consist of the Launcher utility and the Updater.
Appendix
Reference information is provided in the appendix.

Reflection Loss

The field strength $\underline{E_{r}}$ of the reflected wave is computed using the reflection factor $\underline{R_{12}}$ and the field strength $\underline{E_{i}}$ of the incident wave¹:

\frac{E_{r}}{E_{i}} = | {\underline{R_{12}}}^{'} |

The reflection factor $\underline{| {\underline{R_{12}}}^{'} |}$ is computed from the transmission factor $\underline{| T_{12} |}$ :

| {\underline{R_{12}}}^{'} | = 1 - | \underline{T_{12}} |

Additionally, the roughness is considered by:

| \underline{R_{12}} | = | {\underline{R_{12}}}^{'} | \cdot ρ_{0}

A smooth surface has a value of

ρ_{0} = 1.0

.

Note: In the case of a rough surface, the (higher) reflection loss is computed via the Bidirectional Reflectance Distribution Function (BRDF).

The value of $| R_{12} |$ is shown in column L in the table.

The reflection loss is then computed as follows:

L_{R} = 20 \cdot \log | \underline{R_{12}} |

¹ G. Wölfle: Adaptive Modelle für die Funknetzplanung und zur Berechnung der Empfangsqualität in Gebäuden. (Adaptive Propagation Models for the Planning of Wireless Communication Networks and for the Computation of the Reception Quality inside Buildings). PhD Thesis, University of Stuttgart, published by Shaker Verlag, 2000.