Calculation of aircraft noise with IMMI

The aircraft noise module provided in IMMI was specifically developed to meet the requirements of aircraft noise prediction.

Characteristically, aircraft noise causes short, but high peak levels, which can lead to sleep disorders of residents in the vicinity of airports. The aircraft noise module provides the user interface and the range of functions of the other IMMI modules. IMMI complies with the requirements of the German Federal Environmental Agency for programs for the calculation of noise protection areas at airports according to ECAC.CEAC.Doc. 29.

General features of the aircraft noise module

  • Support of national (AzB 2008, VBUF, DIN 45684-1) and European (ECAC. CEAC. Doc. 29 2nd and 3rd edition (CNOSSOS-EU-Adaption)) regulations
  • Calculation of the equivalent continuous sound levels for day (LAeq, day) and night (LAeq, night) as well as of the criterion for the maximum level frequency distribution NAT (Lp, Schw) and of the wake-up frequency (according to the DLR study) at receiver points and in the grid
  • Modeling according to data acquisition system (DAS)
  • Import/export via the QSI interface according to DIN 45687
  • Emission database of all aircraft classes (AzB 1975+1983+1999, DIN 45684-1, ECAC.CEAC Doc 29 3rd Edition) with APU application and taxiing traffic
  • Determination of day abatement and the night abatement zone pursuant to the German act on aircraft noise
  • Import and evaluation of radar data (FANOMOS) as well as noise impact calculations based on radar recordings