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Ground Radar At Airports  
User currently offlineLouA340 From Canada, joined Oct 2005, 387 posts, RR: 0
Posted (10 years 1 month 1 week 2 days 7 hours ago) and read 5542 times:

Hi all,
I have been wondering how the tower is able to keep track of aircrafts moving around the airport and keep them from colliding at busy airports were there are 20+ planes moving round at a given time. I found out they use ground radar to monitor them.
I wanted to know how exactly this works.Is it the same as the regular air radar? Is it the same equipment? How do the guys at ATC know where the planes are?
Thanks in advance.

2 replies: All unread, jump to last
User currently offlineCorey07850 From United States of America, joined Feb 2004, 2537 posts, RR: 4
Reply 1, posted (10 years 1 month 1 week 2 days 6 hours ago) and read 5536 times:

Go here to see all about the system:

To answer your other questions, the controllers know where other planes are simply by experience. ASDE-X is a fairly new tool, and isn't in use in that many places so controllers are forced to know where everyone is based solely on memory and experience. Of course they will sometimes have to ask the pilots to verify their position, or they may write notes down or something, but for the most part it is based on skill

User currently offlineLH4U From Germany, joined Jan 2006, 12 posts, RR: 0
Reply 2, posted (10 years 1 month 1 week 1 day 16 hours ago) and read 5474 times:

Hi there,

Ground controllers use multiple methods to verify the position of aircraft. Conditions permitting visually (directly or by camera), ASMR (Airport surface movement radar) provides primairy targets (green spots) and in the last couple of years airports started to use secondary ground movement radar, which provides targets with data tags (flight number).

Quoting Corey07850 (Reply 1):
To answer your other questions, the controllers know where other planes are simply by experience

The controllers know by experience that a lot of cockpit crews sometimes go where they´re not supposed to... Wink


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