近接確率によるレーダー管制間隔の安全性の相対的評価
1990 年 1990 巻 65 号 p. 15-32
詳細
1990 年 1990 巻 65 号 p. 15-32
This paper proposes an analytical evaluation method for establishing a radar separation minimum in air traffic control (ATC) environments where a monopulse SSR (secondary surveillance radar) is used for surveillance. The SSR, namely Long Range SSR (LSSR), is supposed to be used for the surveillance of an oceanic airspace and its coverage is extended to 250 NM.
As a relative measure of the collision risk due to azimuth errors of the LSSR, the close approach probability (CAP), i.e., the probability that a pair of aircraft overlaps in azimuthal direction is used for evaluating the safety of the surveillance system. The CAPs for both the LSSR and the conventional SSR are estimated through the modeling of azimuth distribution errors. These CAPs are compared each other from statistical view points.
The results show that the CAP for the LSSR is significantly smaller than that of the conventional one under 5 NM radar separation minimum environment.
