Military Systems Magazine - December 2021

Page 66


CAN YOU TRUST YOUR GNSS? Global Navig gation n Satelllite Systems (GNSS) are widely used in n safety y an nd value critical applications and many stakeholders and applications as well as critical in nfra astructure e pro oviders s relly on them. In recent years, GNSS applicatio ons hav ve become the target of inttentional in nterference attacks. Dangerous portable devic ces can cause considerable economic but als so material damage. Jamming and spoofin ng signals can sig gniific cantly influence the operation of GNSS. This can le ead to degraded position accuracies or to a total faillure of the positioning. Interrference incid dents are real and can cause severe damages: • Shutdown of navigation equipment at Newark airport • GNSS attacks of North Kore ea again nst South Kore ea • 1117 in ncidents within one day y att Kaohsiu ung g airrport in Taiwan • A U.S. military drone was forced to lan nd • A 65-meter yacht driftiing off course during field trials • Failure of emerrge ency y pag gers s, trafffic management sys stems and d AT ATMs in San Diego caused by U.S. Navy jamm ming

The GN NSS Interference Dete ection and Analysis System m (GIDAS), offered by y OHB Dig gitall Solutions, enables a continuou us 24/7 monitoring of the GNSS S frequency bands within a defined reg gion to automatically de etect, classify and localize intentional interference by means s of jam mming an nd spoofing. The system works autonomo ously y and is des signed to be ea asily deployed. It is sca alable and fllexible; it can be used as a standalone e monitoring statiion or up pgraded to a ne etwork of stations. In September 2020, the firs st GIDA AS mon nitoring stations were installed at th he Czec ch airp port in Brno. Initial GIDAS reports sh how an n ave erage e of seven GNSS interference ev vents per da ay. y. GIDAS was able to successfully y cla assify th he signal type in 96% of jamming ca ases that occurred.

Thus,, th he question arises, what to do ag gainst GNSS interference? Awarenes ss is the key. y Most GNSS users y. are e unaware of the hazardous im mpacts GN NSS interference can have on their application or operation. Therefore, crrews should be aware of such attacks and it is advis sed to make e cross-check ks with other independent navigation n techniques. Detection of RFI is the firs st step towards mitigation. Only if GN NSS interference attacks are fast and reliably dettected it is possible to dep ploy countermeasures.

OHB Digital Solutions GmbH


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