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Research And Development Services And Related Consultancy Services – Research Project - Dzsf - Manipulation Of Satellite Position Data In The Railway Sector Through Gnss Spoofing And Jamming. The Railway Industry Is Increasingly Interested In The Use Of Gnns Positioning Systems. Precise And Continuous Location Or Time Reference Is A Prerequisite For Driving Within Braking Distance (Etcs Level 3 And So-Called Moving Block) And Is Therefore Indispensable For Digital Rail As A Basic Technology. However, The Open Gnss Signals On The Earths Surface Are Weak And Can Be Manipulated, Posing A Potential Security Risk To Various Areas As Well As Rail Traffic. The Two Most Common Attacks Here Are Spoofing And Jamming. Gnss Spoofing Is A Type Of Cyberattack In Which Fake Position Or Time Data Is Sent To The Recipient So That The Recipient Cannot Distinguish The Fake From The Original And Therefore Incorrect Location Occurs. With Gnss Jamming, Jammers Ensure That Satellite Signals Do Not Reach The Receiver. Recently There Have Been Increasing Reports From The Authorities About Targeted Gnss Interference In The Baltic States, The Baltic Sea And On The Adjacent Mainland, Which Are Particularly Affecting Shipping And Aviation. This Means That Rail Applications Are Also Exposed To A Non-Negligible Risk From Manipulation Of Satellite Position Data. Despite These Challenges, There Are Already Various Measures That Are Being Used And Further Developed Against Gnss Manipulations, Which Will Be Examined In The Defined Railway Context As Part Of This Project.

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