航空交通流管理における交通量の指標値に関する一提案

抄録

ATFM (Air Traffic Flow Management) is conducted to respond demand for traffic increase and to keep safe and efficient flight at each sector. ATFM use “Traffic Capacity Index” that represents a controller workload to make a decision of ATFM control. In order to know this index, air traffic controller's task must be measured, analyzed and classified of each aircraft in each sector to obtain parameter of controller workload. The controller's task means the consideration of control instructions, the communication with pilot and surveillance. It is time consuming and laborious to obtain parameter of controller workload.

This paper notes traffic characteristic in each sector and presents a simple new method to calculate this “Traffic Capacity Index” instead of current method. The index obtained by current method has been compared with average number of controlled aircraft in each 15 sector at Tokyo Area Control Center. The result has shown that the index by current method is proportional to average number of controlled aircraft per 30 minutes and its proportion coefficient corresponds to the average parameter of controller workload.

Then this paper proposed a method by number of proximity aircraft and parameter “K” at each sector to calculate “Traffic Capacity Index”. The close relationship between the index by proposed method and the index by current method has been shown. If the number of arriving aircraft is fewer than the average of all sector, this parameter “K” can be expressed by a simple function in terms of average number of controlled aircraft.