GNSS positioning on planet Earth
GNSS positioning with development of customized, high precision and secure GNSS receivers and GNSS antennas for specific applications that process signals from Galileo, GPS, GLONASS, BeiDou and SBAS on multiple frequency bands.

Galileo Public Regulated Service (PRS) Simulation and GNSS Test Solutions

The functionality and performance of receiver and antenna technologies for Global Navigation Satellite Systems (GNSS) can be checked against specific requirements by simulation already in the concept phase or later. Simulation makes it possible to address specific applications and at the same time reduce development times. The prerequisite is a realistic simulation environment in which, as far as possible, all parameters such as satellite orbit, signal propagation or receiver environment are taken into account. But also the realistic modelling of the user's movement as well as the consideration of possible interfering signals play a decisive role here.

With the Galileo Public Regulated Service (PRS) signal generator, Fraunhofer IIS offers a simulation and test environment that is unique worldwide, but also a wide range of test and evaluation solutions with multi-GNSS simulators, record & replay systems, interferer detection and positioning stations as well as with further mobile measurement applications or a unique antenna measurement hall.

Specific Offer

  • Use of our multi-GNSS/INS/Galileo PRS signal generator environment
  • Mobile use of multi-band and Galileo PRS suitable record & replay systems (Flexiband USB front-end)
  • Combination of GNSS and Machine Learning technologies to protect against signal deception
  • Development of and training on Galileo PRS signal simulators
  • Test and evaluation with multi-GNSS simulators (Galileo, GPS, GLONASS, BeiDou, SBAS)
  • Mobile multi-band record & replay systems, also for Galileo PRS
  • Location-independent measurements and tests with our mobile measurement laboratory L.I.N.K. Mobil with high-end reference receiver incl. INS coupling for ground truth
  • Array antenna as well as CRPA tests in the 3D GNSS wave-field synthesis over-the-air test facility
  • Antenna evaluation with commercial antennas and tests with measurement in our antenna measurement hall


Multi-GNSS simulation & test environment


Galileo PRS signal generator GSS9000

Flexible GNSS front-end

GNSS high-frequency front-end

Applications and projects



GNSS interference detection with machine learning and crowdsourcing.




GNSS high-frequency front-end with up to three simultaneous receive channels and separate tuning of the frequency bands.



Versatile configurable system for the detection and characterization of jammers.

More information


GNSS receiver technologies

Satellite navigation receivers and antennas for a wide range of applications.


van der Merwe, J.R.; Nikolikj, A.; Kram, S.; Lukcin, I.; Nadzinski, G.; Rügamer, A.; Felber, W. (September 2020): Blind Spoofing Detection for Multi-Antenna Snapshot Receivers using Machine-Learning Techniques, in: Proceedings of the 33rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2020), St. Louis, Missouri.

van der Merwe, J.R.; Rügamer, A.; Felber, W.: Blind Spoofing GNSS Constellation Detection Using a Multi-Antenna Snapshot Receiver, in: MDPI Sensors 2019, 19, 5439.

van der Merwe, J.R.; Rügamer, A.; Popugaev, A.; Zubizarreta, X.; Felber, W. (September 2019): Cooperative spoofing attack detection using multiple antennas and a snapshot receiver, in: Proceedings of the 32nd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2019), Miami, Florida.

van der Merwe, J.R.; Rügamer, A.; Fernandez-Dans Goicoechea, A.; Felber, W. (Juni 2019): Blind Spoofing Detection Using a Multi-Antenna Snapshot Receiver, 2019 International Conference on Localization and GNSS (ICL-GNSS).

van der Merwe, J.R.; Fernandez-Dans Goicoechea, A.; Rügamer, A.; Rubino, D.; Zubizarreta, X.; Felber, W. (April 2019): Multi-antenna snapshot receiver, in: European Navigation Conference (ENC), Warsaw, Poland.

Rügamer, A.; Förster, F.; Stahl, M.; Rohmer, G. (2014): Features and Applications of the Adaptable Flexiband USB3.0 Front-end, in: Proceedings of the 27th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2014), Tampa, Florida, S. 330-362.

Rügamer, A.; Meister, D.; van der Merwe, J. R.; Otto, C.; Stahl, M.; Felber, W. (2013): Versatile and Configurable GNSS Interference Detection and Characterization Station, in: Proceedings of the ION Pacific PNT 2017 Conference (ION PNT 2017), Honolulu, Hawaii, S. 797-808.

Rügamer, A.; Lukcin, I.; Rohmer, G.; Thielecke, J. (2013): GNSS Inteference Detection Using a Compressed Sensing Analog to Information Converter Approach, in: International Technical Meeting of The Institute of Navigation, San Diego, CA, S. 843-855.

Rügamer, A.; Foerster, F.; Stahl, M.; Rohmer, G. (2012): A Flexible and Portable Multiband GNSS front-end System, in: Proceedings of the 25th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS 2012), Nashville, TN, S. 2378-2389.

Rügamer, A., Overbeck, M., Koehler, S., Rohmer, G., Berglez, P., Wasle, E., Seybold, J. (2010): Digital GNSS Signal Recorder, Generator, and Simulator for Receiver Test, Qualification, and Certification, in: Proceedings of the 23rd International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS 2010), Portland, OR, S. 1378-1385.