Deterministic Modeling of the Street Canyon Effect in Urban Micro and Pico Cells

摘要

In this paper the modeling of the street canyon effect in urban wave propagation is investigated. Multiple diffracted signal paths can be calculated using a simple ray tracer. However, significant power is also transmitted by a combination of wall reflection and wedge diffraction. This paper introduces a new deterministic algorithm which is able to calculate such paths using imaging techniques. Emphasis is put on the efforts made to reduce the problem's complexity since a straight forward application would suffer from enormous computing time and memory requirements. Comparisons with DCS1800 measurements show notable improvements of the field strength prediction.