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Combating Single-Frequency Jamming through a Multi-Frequency, Multi-Constellation Software Receiver: A Case Study for
Saiful Islam1, Mohammad Zahidul H Bhuiyan1, Sarang Thombre1,2
1Finnish Geospatial Research Institute (FGI-NLS), 02430 Kirkkonummi, Finland.
Sensors (Basel, Switzerland)
|March 26, 2022
Summary
This study introduces a resilient Multi-Frequency, Multi-Constellation (MFMC) receiver for maritime navigation. It effectively detects and switches from jammed Global Navigation Satellite System (GNSS) signals to ensure continuous positioning.
Area of Science:
- Maritime Navigation
- Satellite Systems Engineering
- Signal Processing
Background:
- Global trade heavily relies on maritime transport, increasing dependence on Global Navigation Satellite System (GNSS) for navigation.
- GNSS signals are susceptible to radio frequency interference, posing risks to maritime safety and operations.
- Existing navigation systems may lack robustness against sophisticated jamming techniques.
Purpose of the Study:
- To propose and evaluate a resilient Multi-Frequency, Multi-Constellation (MFMC) receiver for maritime GNSS navigation.
- To develop a jamming event detector capable of identifying jamming incidents in real-time.
- To ensure seamless positioning by enabling immediate switching to unaffected GNSS signals.
Main Methods:
- Implementation of a jamming event detector to identify the onset, cessation, and duration of GNSS signal jamming.
- Development of a resilient MFMC receiver architecture.
- Performance analysis of Global Positioning System (GPS) L5, Galileo E5a, and Galileo E5b signals, including multi-GNSS combinations, in a maritime environment.
- Investigation of lower L-band GNSS signal performance in maritime settings.
Main Results:
- The proposed resilient MFMC receiver successfully provides seamless positioning during single-frequency jamming events in the lower or upper L-band.
- The implemented jamming event detector accurately identifies jamming incidents across impacted GNSS signals.
- Positioning performance was analyzed for various single and combined GNSS signals in the Gulf of Finland.
Conclusions:
- The developed resilient MFMC receiver enhances the reliability of maritime navigation against GNSS signal jamming.
- Real-time jamming detection and signal switching are crucial for maintaining continuous positioning accuracy.
- Further investigation into lower L-band GNSS performance in maritime environments is warranted.
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