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Article

HDDM Hardware Evaluation for Robust Interference Mitigation

Satellite-Based Positioning Systems Department, Fraunhofer IIS, Nordostpark 84, 90411 Nuremberg, Germany
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This paper is an extended version of our paper published in Proceedings of the 2020 International Conference on Localization and GNSS (ICL-GNSS), Tampere, Finland, 2–4 July 2020; pp. 1–6.
Sensors 2020, 20(22), 6492; https://doi.org/10.3390/s20226492
Received: 17 September 2020 / Revised: 5 November 2020 / Accepted: 10 November 2020 / Published: 13 November 2020
Interference can significantly degrade the performance of global navigation satellite system (GNSS) receivers. Therefore, mitigation methods are required to ensure reliable operations. However, as there are different types of interference, robust, multi-purpose mitigation algorithms are needed. This paper describes the most popular state-of-the-art interference mitigation techniques. The high-rate DFT-based data manipulator (HDDM) is proposed as a possible solution to overcome their limitations. This paper presents a hardware implementation of the HDDM algorithm. The hardware HDDM module is integrated in three different receivers equipped with analog radio-frequency (RF) front-ends supporting signals with different dynamic range. The resource utilization and power consumption is evaluated for the three cases. The algorithm is compared to a low-end mass-market receiver and a high-end professional receiver with basic and sophisticated interference mitigation capabilities, respectively. Different type of interference are used to compare the mitigation capabilities of the receivers under test. Results of the HDDM hardware implementation achieve the similar or improved performance to the state of the art. With more complex interferences, like frequency hopping or pulsed, the HDDM shows even better performance. View Full-Text
Keywords: global navigation satellite system (GNSS); interference; mitigation; high-rate DFT-based data manipulator (HDDM); discrete Fourier transform (DFT) global navigation satellite system (GNSS); interference; mitigation; high-rate DFT-based data manipulator (HDDM); discrete Fourier transform (DFT)
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MDPI and ACS Style

Garzia, F.; van der Merwe, J.R.; Rügamer, A.; Urquijo, S.; Felber, W. HDDM Hardware Evaluation for Robust Interference Mitigation. Sensors 2020, 20, 6492. https://doi.org/10.3390/s20226492

AMA Style

Garzia F, van der Merwe JR, Rügamer A, Urquijo S, Felber W. HDDM Hardware Evaluation for Robust Interference Mitigation. Sensors. 2020; 20(22):6492. https://doi.org/10.3390/s20226492

Chicago/Turabian Style

Garzia, Fabio, Johannes Rossouw van der Merwe, Alexander Rügamer, Santiago Urquijo, and Wolfgang Felber. 2020. "HDDM Hardware Evaluation for Robust Interference Mitigation" Sensors 20, no. 22: 6492. https://doi.org/10.3390/s20226492

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