Automatic Dependent Surveillance Broadcast via GPS-Squitter; A Major Upgrade tothe National Airspace System

摘要

OPS-Squitter is a technology for surveillance of aircraft via broadcast of theirGPS-determined positions to all listeners, using the Mode S data link. It can be used to provide traffic displays, on the ground for controllers and in the cockpit for pilots, and will enhance TCAS performance. It is compatible with the existing ground-based beacon interrogator radar system and is an evolutionary way to move from ground-based-radar surveillance to satellite-based surveillance. Removing the burden of maintaining a ground-based system would permit phasing out the ground-based secondary surveillance radar system over a period of 10 to 20 years and replacing it with much simpler ground stations, resulting in cost savings of hundreds of millions of dollars.