Air Traffic Noise – The Traffic over Frankfurt am Main

To Air Traffic Noise of the UNH

Questions and answers on the representation of the air traffic - Air Traffic Noise

 
What does the application represent?
Air Traffic Noise shows the air traffic in the surroundings of Frankfurt Airport with a delay of 75 to 135 minutes. This delay arises due to the bundled transmission of the noise measurement data every 60 minutes from the stations to the UNH and due to the processing of the flight paths which then takes place. This representation shows basic information such as:

• Departing and arriving aircraft in Frankfurt on the basis of the FANOMOS data of the German air-traffic control authority [Deutsche Flugsicherung].
  
• Air traffic noise measurement stations of Fraport AG, the communities and the UNH.
• Aircraft size depending on the aircraft type.

Which detailed information is available?
When you click on the aircraft detailed information of the flight appears:

• Callsign, ICAO code, speed, altitude above sea level as well as departure and arrival airport. The corresponding flight path over the flight route registered so far is also shown if there is a complete set of data. The colouring of this flight path shows the altitude change at the corresponding position.

How can I move the map?

• At the top right you will see the navigation bar for the map. Here you can zoom in and out and move the map in all directions. You can also move the map with the mouse. Simply keep the left mouse button pressed and move the mouse.

Which views can be selected?

• At the top left under the heading “Display” you can choose different backgrounds. The views map, satellite or terrain are available. 

How do I find a flight event and the corresponding noise level?

• In the live mode you can see the data which are currently available in the UNH. At the present transmission status they are still delayed by up to two hours.
• For events which are further back than 2 hours, select “Replay”. 
• In the menu “Overview” you can select a date and the corresponding time in order to display the data. 

How loud was the aircraft I have selected?

• Select a measurement station on the map. When you click on the heading “Noise” you will receive an overview of the noise levels for the selected station.

Data basis
The data for the flight paths is based on the FANOMOS data of the DFS. According to the DFS, the deviations between radar and FANOMOS data are around 200 m on average; in individual cases there can be maximum deviations of up to 400 m.

The noise measurement data are collected by Fraport AG, the surrounding communities and the UNH stations. They are marked according to their origin. 

The noises arriving at the noise measurement stations are always from different sources which can overlap. This is why the air traffic noise measurement stations have measurement thresholds which serve to identify a noise registered by the measurement device as air traffic noise. 

A measured air traffic noise event is described in terms of its maximum level (LAS, max) and the time for which the noise level is less than 10 dB(A) under the maximum level. The criteria for event recognition of air traffic noise assume that the measurement station is located at a place at which the air traffic noises are considerably louder than those from other noise sources, e.g. road traffic noise. Start and stop thresholds set in the measurement device which are at least 3 dB(A) above the A-weighted sound pressure level of the ambient noise ensure an initial separation of ambient noise and air traffic noise events. In order that an air traffic noise event can be evaluated, its maximum level must be 3 dB(A) above the start and stop threshold. When the level of the event above at least 3 dB(A) has been registered, it is possible to make an estimate of the timeframe of the whole noise event. In the case of air traffic noise events which exceed the start / stop threshold by less than 3 dB(A), it is not possible to make any statement about the course of the noise level over time. The event can thus not be included in the evaluation. In this case Fraport uses in its evaluations type-specific standard noise levels for the unmeasured noise event. The best thing, however, is if one can measure the whole course of the noise level over a range of 10 dB(A) below the maximum level without interference by ambient noise. 

© 2010  Umwelthaus gGmbH
This website is exclusively for demonstration purposes. We do not accept any liability for the data contained therein, their correctness, accuracy or any resulting conclusions about actual flight movements in the airspace shown.
The information about public transport in Google Maps is provided by Umwelthaus GmbH and serves only to demonstrate the air traffic over the Frankfurt region. Umwelthaus GmbH does not assume any guarantee or liability for the correctness or the completeness of this content.