Finland is set to transform its air traffic surveillance by operating tje world’s largest Wide Area Multilateration (WAM) system with a network of more than 120 ground stations ranging from the Baltic Sea to Northern Lapland.
Finish Air Navigation Service Provider, Fintraffic Air Navigation Services (ANS) is using a WAM system from Frequentis Comsoft. The company installed its Quadrant system to provide WAM and ADS-B (automatic dependent surveillance – broadcast) coverage for 80% of the Finnish airspace.
Providing a high-quality surveillance picture with highly accurate aircraft position measurements and high update rate, the WAM system extends the air traffic surveillance capability for Fintraffic ANS, as well as creating a Mode S airspace (S= selective communication with individual aircraft), improving aircraft identification, situation picture and tracking. The south-western WAM region, including Helsinki, was put into operation in Q1, 2022 with air traffic controllers said to be delighted about the surveillance performance and extended system coverage. Remaining WAM regions are expected to be in operation in early 2023.
“Putting the Quadrant WAM system into operation marks a major milestone for Fintraffic ANS, contributing to transforming the Finnish airspace into full Mode S Enhanced Surveillance while extending coverage. Excellent quality, high update surveillance data integrates seamlessly with our trackers,” said Tero Alastalo, SUR System Manger, Fintraffic ANS. “The robust Frequentis Comsoft Quadrant ground stations, with their minimal maintenance needs, are the perfect fit for our environment with many remote locations inaccessible during winter months.”
With a population of 5.5 million, Finland’s passenger numbers are almost five times that figure, with close to 25 million passengers reported in 2018 and 26 million in 2019. Helsinki Airport alone managed close to 22 million passengers in 2019.
The Frequentis Comsoft WAM service covers the Finnish Flight Information Region (FIR), from 600 ft above sea level, and additional lower airspace coverage for 19 airport areas. ADS-B service is provided for the FIR and for airports to ground level. The system provides high resilience, assuring continuous WAM service. Helsinki FIR and airport are designed with N-2 ground station redundancy.
Commenting on his delight at being able to support Fintraffic ANS in modernising surveillance across Finnish airspace, Constantin von Reden, Managing Director Frequentis Comsoft added: “With this WAM system from Frequentis Comsoft we have helped them prepare for new demands on their service, providing extended surveillance capabilities while improving safety and service quality.”