Transportation Industry
Low-cost traffic surveillance.(Industry & International)(QinetiQ introduces low-cost air traffic surveillance system)(Brief Article)
Airports International, March, 2005
A new low-cost air traffic surveillance system has been launched by QinetiQ to bring operational benefits to medium and small sized airports. Quadrant is designed to provide highly accurate aircraft movement pictures at much lower cost than conventional radar systems. Based on a Mode S receiver Quadrant offers both local area and wide area surveillance and combines two surveillance techniques--multilateration and Automatic Dependent Surveillance --Broadcast (ADS-B).
For local area surveillance Quadrant uses multiple sensors located around the airfield to provide a position fix on any Mode S target. Wide area surveillance with over 200 miles (320km) range is also achievable. Multilateration surveillance is provided by connecting four or more sensors, combined...
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