B.1 Spoofing and spoofing detection

Spoofing is the intentional disturbance of a GNSS receiver, which induces wrong time and position results. This can cause severe damage, like drone stealing or mobile network  disturbance. At our institute we investigate spoofing attacks and anti-spoofing methods for the receivers.

Tasks:

  • Performing spoofing attacks
  • Analyzing behavior of receiver-based anti spoofing parameters and detection rate
  • Requirement: Basic knowledge of GNSS and spoofing

B.2 Signal Quality Monitoring

Signal Quality Monitoring is needed for several purposes, detection of satellite hardware errors, ionosphere scintillations, spoofing, jamming, interference or multipath: Monitoring GNSS signals and analyzing the signal quality with software receiver. At our institute we have the possibility to receive satellite signals with 2.4 m dish antenna to analyze the signal quality. Investigating the behavior and stability of the correlation function and other tracking parameters is one of the tasks. Generally,  monitoring of GNSS signals is especially developed for the Galileo PRS and integrity purposes.

Tasks and requirements:

  • Observing satellite signals with parabol antenna
  • Compare signal quality with nominal values
  • Requirement: Basic knowledge of GNSS

 

 B.3 Design new signals and transmitting them in the testbed of the institute                                                                                                       

At the institute new GNSS signals are developed and analyzed with our testbed, where artificial signals can be transmitted over the air and received afterwards.  Signals are developed and analyzed after reception in Matlab.

There has been an increased interest in combining Direct Sequence Code Division Multiple Access (DS-CDMA) with multi-carrier (MC) concepts to produce technologies such as MC-DS-CDMA in which the chips of a spread data symbol are mapped along the time direction over several multi-carrier symbols.

One of the driving factors for this interest is to use MC-DS-CDMA signals in channel environments where jamming/spoofing is expected. As the range information and navigation message are modulated over all sub-carriers, in an environment where only certain sub-carriers are jammed, the other less affected sub-carriers can be used to reliably compute navigation observables.

The Teststrecke at ISTA UniBwM campus realizes a synchronized testbed which can be used to test and analyze the prospect of using multi-carrier signals in jammed environments for improved ranging performance.

Tasks and requirements:

  • Generating new signals with Matlab program
  • Transmitting in testbed and performing jamming attacks
  • Analyzing the tracking quality of received signals
  • Requirement: Basic knowledge of GNSS signals and Matlab

 

 

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For further details regarding Studienarbeit/bachelor/master thesis contact: Ronny.blum@unibw.de