RapLab, Radio Wave Propagation Analysis Tool

RapLab is a radio wave propagation analysis tool that uses the 3D ray-tracing (imaging) method. It is primarily intended to support wireless researchers by providing more accurate simulation of radio wave propagation. It has a track record of strong support for research on antennas and wave propagation.


Communication Equipment,Imaging,Measurement Data Validation,MIMO,Radio Wave Propagation,Ray Tracing,Smart Grids,Smart Meters,Terrestrial Digital Broadcasting,Wave Estimation,Wireless Communications,Wireless LAN

Solution Overview

RapLab is a proprietary radio wave propagation analysis tool developed by KOZO KEIKAKU ENGINEERING Inc.
RapLab's calculation methods follow basic electromagnetic theory and calculate the loss of propagation due to reflection, diffraction and transmission, which are the basic elements of the ray-tracing method. The reflection and transmission coefficients use Fresnel's equations, and the diffraction coefficient uses equations based on UTD (Uniform Geometrical Theory of Diffraction).


Imaging Method

Performing analyses by the three-dimensional imaging method allows calculations of higher accuracy than the ray-launching method. In addition, calculations of the loss of propagation due to reflection, diffraction and transmission are supported.

CSV Output of Various Types of Information

CSV-format output is available not only for the calculation results but also for detailed intermediate results and calculation parameters. For example, you can obtain the parameters for the calculation of the reflection coefficient at an individual reflection point (such as the angle of incidence and electrical characteristics) in order to verify the values. In addition, you can easily use the results that are output for purposes such as validation by comparison to observed data.

Open Calculation Methods

The calculation formulas that are used are open, to enable the calculation parameters to be verified.


Individual features and improvements can be added upon request.

Fields of Application

In addition to urban environments, analysis of suburban and indoor propagation is also possible. It is also possible to read map data and terrain data.

  • Basic validation of measurement data
    - Check number of paths and direction of arrival at reception points
    - Check radio wave propagation path by tracing of reflection and diffraction points
    - Validation by comparison with observed data
  • Various research topics such as antenna design and mobile communications
  • Teaching tool for academic training and lectures of radio wave propagation

For More Information

Marketing Unit
TEL: +81-(0)3-5342-1533
E-Mail: telcom@kke.co.jp

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