The following video explains how our system calculates location-specific data used on this website:
How we count the number of flights
To be able to analyze the number of flights over an area around the airport, we have created a grid of identically sized squares. We start by drawing a cone at the corner of each grid. Using the location that you provided when you entered the site, we determine the nearest cone to you.
Flights that pass through each cone are recorded and that data is presented on this website.
To avoid underestimating the flights in each area and to fully cover all locations in our grid, we lower the cone 2,600 feet into the ground. The cone extends up to 10,000 feet above local ground level and at the very top.
Why we use a cone
The 48.5-degree angle of the cone was selected as it incorporates an evaluation of noise, in that if one aircraft flew directly above the observer, followed by a second aircraft off to the side along the 48.5 degree line, the second aircraft would be 3 decibels quieter than the first.
Where does the data come from?
All data used in our system comes directly from our Aircraft Noise and Operations Monitoring System (ANOMS), which receives flight data from air traffic control radar.
