Inhalte

Noise measuring points

A measurement is conducted at all measuring points per second, and all measured values are continuously recorded. With the help of individually adjustable air traffic noise recognition parameters, which are determined in dependence on the actual location taking into consideration the basic noise level and other noise sources at the measuring position, the thus established level-time chart allows to clearly distinguish aircraft noise events. The parameters are used to filter foreign noise, such as vehicular traffic, birds or leaves.

Kontakt

Steffen Mäder
Noise and environment protection

Phone: 0351-8813020

Fax:0351-8813024

From breathing noise to the noise of a night club: here you find sound level reference values

At night the measured values and air traffic noise events of that day are transmitted to the central data processing unit and matched to aircraft movements. This means that each peak in the air traffic noise curve can be related to a certain aircraft movement. A time slot model is used for this correlation step. This means that the point of time the aircraft passes the respective measuring point is determined based on the actual take-off or landing times, which are registered in the airport log book. The different cruising speeds of the various types of aircraft (jet engines, propeller engines, helicopters) are thereby taken into account. Noise events which meet the air traffic noise recognition parameters and which were recorded near the calculated point of time of passage can thus be matched automatically and precisely to a certain flight.

In order to avoid misinterpretation, it is further checked whether or not extreme weather conditions prevailed at the time of the noise measurements, in particular wind speeds exceeding 8.3 m/s. Meteorological data are collected at two independent measuring points. If this is the case, respective aircraft noise events are deleted from the statistics, because they were found in unreliable measurements.

After manual assessment of the events and correlations, acoustic key data, such as the permanent sound pressure level according to DIN 45643, can be calculated.

Checking of measuring values

The exact locations of the stationary noise measuring points are:

Measuring point 1: Hellerau water tower, Brunnenweg
Measuring point 2: 84th School, Tessenowweg, Hellerau
Measuring point 3: Private house, Medinger Straße 12, Hermsdorf
Measuring point 4: Private house, Grüne Aue 45, Dresden-Rähnitz
Measuring point 5: Obstruction lights pylon on the airport area / Schelsberg, Weixdorf

Dresden Airport closely collaborates with Cirrus Research plc. The British manufacturer of noise measuring equipment with a branch office in Dresden supplied aircraft noise monitoring systems for the five stationary and two mobile measuring stations at Dresden Airport.