Numerical Model¶
Emission Numerical Model¶
Traffic emission model¶
The emission model of the implemented traffic is the CNOSSOS-EU model.
Note
Current model includes the emission coefficients a and b presented in the report “Amendments for CNOSSOS-EU” (Kok, 2019)
Other emission models¶
Other emission models are not included within the release 3.0.
Ray Tracing¶
The ray tracing algorithm is a rubber-band like algorithm as specified in CNOSSOS-EU.
Warning
- rays backwards to the source or receiver are not taken into account. For example, if a receiver is located inside a U-shaped building, only diffractions on horizontal edges will be taken into account.
Propagation Numerical Model¶
The emission model of the implemented traffic is the CNOSSOS-EU model.
Warning
- the rays under favorable conditions are subject to questioning. The current version is not final.
- the Rayleigh criterion is subject to questioning. The current version does not integrate calculation that involve this criterion.
- taking into account 15 degrees obstacles are subject to questioning. The current version doesn’t integrate calculation that involve 15 degrees obstacles.