The approach radar displays the flight's transponder code

1. You can assign secondary radar transponder codes to individual flights on the approach radar (just generate random four-digit numbers, but avoid special codes such as 7700, 7600, and 7500).

2. Implement in-flight incident handling; when an emergency code is detected, the approach radar can display a red indicator for distinction

3. The approach radar display can mimic real-world radar by showing scan lines (typically 3 revolutions per minute or 6 revolutions per minute). New flight detection rules can also be based on these scan lines, so that new flights are only detected when the scan line passes a specific bearing. Additionally, flight paths and waypoints can be displayed on the approach radar screen

(PS: Sincere advice from a retired radar operator—hope the developers will consider this. Thanks!)