终于找到数据了，新加坡空中交通控制中心有能力在500海里范围内追踪2000架飞机。

The Singapore Air Traffic Control Centre (SATCC) houses the new Long Range Radar and Display System III, or LORADS III, which maximises advances in aircraft navigation accuracy and functionality.

 

LORADS III is one of the most advanced air control systems in the world, with multi-surveillance features that enable air traffic controllers to track up to 2,000 aircraft at any one time, within a distance of 500 nautical miles.