Use of a building database in prediction of three-dimensional diffraction

Author

Russell, Thomas A. ; Rappaport, Theodore S. ; Bostian, Charles W.

Author_Institution

Stanford Telecommunications, Inc., Reston, VA, USA

fYear

1992

fDate

10-13 May 1992

Firstpage

943

Abstract

The use of a building database and a three-dimensional formulation of the Fresnel-Kirchoff diffraction theory to compute the shadowing by buildings in the general situation where diffraction can occur by building edges of both horizontal and vertical orientation is described. The storage format of buildings in a geographic information system database is described. An algorithm for identifying the nearest diffracting building and deriving the necessary information for the evaluation of the diffraction integral is presented. Example results are presented to show the utility of this approach

Keywords

cellular radio; electromagnetic wave diffraction; geographic information systems; radiowave propagation; telecommunications computing; visual databases; Fresnel-Kirchoff diffraction theory; building database; building edges; cellular radio; diffraction integral; geographic information system database; horizontal orientation; nearest diffracting building; shadowing; storage format; three-dimensional diffraction; vertical orientation; Base stations; Data analysis; Databases; Diffraction; Geographic Information Systems; Mobile computing; Packaging; Portable computers; Receivers; Software packages;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1992, IEEE 42nd

Conference_Location

Denver, CO

ISSN

1090-3038

Print_ISBN

0-7803-0673-2

Type

conf

DOI

10.1109/VETEC.1992.245272

Filename

245272