Effect of En-route Operations on the Air Traffic Complexity for the Airspace of the Republic of Croatia

Kompleksnost zračnog prometa jedna je od ključnih tematika koje se proučavaju u kontroli zračnog prometa. Veličina koja utječe na volumen prometa naziva se prilagođena gustoća, a utjecajna veličina na strukturiranost protoka prometa naziva se strukturalni indeks. U ovom radu opisane su sve veličine koje utječu na kompleksnost prema PRU modelu kojeg je razvio istraživački tim EUROCONTROL-a. Sve navedene veličine se mogu matematički formulirati i opisati kako bi se dobile ostale značajne veličine. Kompleksnost je jedan od važnijih pokazatelja stanja zračnog prometa. Analiza oblasnih operacija leta i kompleksnosti zračnog prometa se radila statističkim proračunima korelacija na osnovu Spearmanovih i Pearsonovih koeficijenata korelacije. Sav proces proračuna je objašnjen u radu, a korišteni podaci su navedeni u radu. Za potrebe proračuna i statističke obrade korišteni su podaci od 2017. do 2019. godine. U periodu od te tri godine obrađeno je svih 36 mjeseci. Konačni rezultati kompleksnosti i oblasnih operacija leta su opisani te međusobno uspoređeni.Air traffic complexity is one of the key topics studied in air traffic control. The size that affects the volume of air traffic is called adjusted density and other size that affects the structure of the air traffic flow is known as strucutural index. In this paper, all parameters affecting complexity are described according to the PRU model developed by the EUROCONTROL research team. All the mentioned quantities can be mathematically formulated and described in order to obtain other significant quantities. Complexity is one of the most important indicators of the state of air traffic. The analysis of en-route operations and the complexity of air traffic was done with statistical correlation calculations based on Spearman's and Pearson's correlation coefficients. The entire calculation process is explained in the paper, and the data used are listed in the paper. For the purposes of calculation and statistical processing, data from 2017 to 2019 were used. In the period of those three years, all 36 months were processed. The final results of the complexity and en-route operations of the flight are described and compared with each other