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You are here: Obstacles


General Information

This chapter is on calculations and their results using different kinds of obstacles. The chapter covers screening, reflection, absorption and diffraction, which all can be calculated in CadnaA.


The first section illustrates the results of screening and reflection for point sources. The chapter goes on with the calculation technique "Projection", in this case demonstrated with a line source.
The last sections cover the effects of lateral diffraction and ground absorption.


The Basics chapter provides the necessary information before starting with calculations including obstacles. In one occasion, tables are used in this chapter. Learn more about them in Object Modifications.

Further Information

Calculations with obstacles are conducted in all the following chapters. Though the theoretical considerations from this chapter are not needed explicitly, they are a useful basis for further chapters.