AI-based Interference Detection

Beyond detection: The system that thinks for itself

In an increasingly digitally connected world, technical systems across a wide range of industries rely on interference-free communication and precise signal processing. However, interference—whether intentional or unintentional—poses a growing challenge: it can disrupt processes, compromise safety, and cause economic damage.

Interference detection is therefore a key issue in areas such as mobility, aviation, defense, and critical infrastructure.

However, classic, rule-based methods reach their limits in real multipath environments: Reflections and signal mirroring distort measurement results and make reliable localization difficult.

Our solution takes a fundamentally different approach:

It is based on artificial intelligence (AI) that not only recognizes, but also learns, adapts, and improves with each implementation – even in complex environments with multipath effects. 

Adaptive

Our AI automatically adapts to new environments, antennas and device configurations - for reliable detection even in mobile or dynamic scenarios.

Data-efficient

Compact AI models, fast processing, and minimal data transfer ensure low latency, low memory requirements, and high scalability.

Self-learning

New sources of interference are detected and characterized with just a few examples. Recurring patterns are given a unique ID—for quick response and targeted countermeasures..

Accurate

Our AI provides accurate information on the direction, distance, and power of interference sources—for informed decisions and rapid localization..

Our service offer

From research to application - we accompany you every step of the way

Detection

Reliable interference detection in real time

Localization

Precise determination of direction and distance – even in complex environments

Characterization

Detailed analysis of interference sources for targeted countermeasures

Fields of application

Cross-industry application – from mobility to defense

GNSS & Navigation

Detection and classification of GNSS interference such as jamming and spoofing – mobile and stationary.

Mobility

Legally compliant documentation of sources of interference on roads and in vehicle fleets.

Flight safety

Resilient communication through adaptive jammer characterization – for increased safety in air traffic.

Defense

Reliable localization and mitigation of interference signals—for real-time protection of critical systems.

Projects

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  • Q-GeneSys

    Quantum-generative models for industrial simulation systems

    The "Q-GeneSys" project is developing quantum generative models that use IQP quantum circuits to support industrial applications such as molecular, 3D and product design. The aim is to provide scalable and robust solutions for complex generation and simulation tasks by combining quantum computing, AI and early fault tolerance.

    more info
  • fast and modern productionprocess
    © 安琦 王 - stock.adobe.com

    moderne Produktion

    In the "ProCheck" project, Fraunhofer IIS and its partners are developing process mining methods to automatically analyze and optimize material flow and production processes in small and medium-sized enterprises. The aim is to obtain transparent process data on the basis of cyber-physical systems and thereby increase efficiency, quality and flexibility in production.

    more info
  • The Fraunhofer IIS technology enables an extremely fast, AI-based search and evaluation of similar game scenes in large sports tracking databases. As a result, relevant game situations can be found and automatically analyzed in less than a second in order to optimize game tactics and decisions based on data.

    more info
  • © istockphoto.com/Andy

    AI_Federated Learning

    DARCII explores the use of artificial intelligence and federated learning to analyze GNSS interference across distributed and mobile sensor nodes. Different interference patterns are detected and characterized as individual fingerprints. The goal is to identify sources of interference more reliably and improve the resilience of satellite-based navigation.

    more info
  • GNSS interference detection system
    © adobestock/ehrenberg-bilder

    GNSS interference detection system

    Satellite navigation is an essential part of our critical infrastructure. The DARCY project develops an intelligent sensor network that detects, assesses, and localizes disruptions to GNSS signals. By combining machine learning and crowdsourcing, measurement data is aggregated to reliably identify sources of interference and increase the resilience of satellite-based navigation systems.

    more info
  • QuaST develops software and services to make quantum computing more accessible for industrial applications. The project focuses on efficient solutions for complex optimization problems in areas such as logistics, production and business forecasting.

    more info
  • BayQS explores how quantum computing can be harnessed for practical applications. Its research focuses on areas including imaging, sensor technology, logistics, mobile communications and radio-based localization.

    more info

Publications

2026

Karim R., Raichur L. N., Heublein L., Feigl T., Mutschler C., Ott F. (2026):

ZK-Trace: Certified Collusion Tracing with Zero-Knowledge Credentials for Federated GNSS Interference Monitoring

In: IEEE Transactions on Aerospace and Electronic Systems (TAES)

 

Pirkl, J., Ott, J., Schelenz, L., Böhm, L., Eidloth, A., Feigl, T., Mutschler, C. (2026):

Democratizing Label-Free Localization: On-Device WiFi-RTT Channel charting

 

Schelenz, L., Ott, J., Pirkl, J., Pahl,  J., Feigl, T., Mutschler, C. (2026):

EchoNeRF. Time-Resolved RF Channel Synthesis with Neural Radiance Fields for Localization

 

Foroushani, M., Pirkl, J., Stahlke, M., Yammine, G., Feigl, T., Mutschler, C. (2026):

ChronoChart: Setup-Agnostic Channel Charting for Label-Free Indoor Localization

 

Heublein, L., Vidal, I., Feigl, T., Rügamer, A., Ott, F. (2026):

Analyzing and Characterizing Multi-Source Interference Effects at Jammertest Norway 2026 

in: arXiv: 2608.15819

 

Khan, S., Raichur, N., Heublein, L., Wielenberg, C., Mattick, A., Feigl, T., Mutschler, C., Ott, F. (2026):

Active Sensing with MEta-Reinforcement Learning for emitter Localization from RF Observations

in: arXiv: 2605.12569

 

Wielenberg, C., Heublein, L., Ott, J., Mattick, A., Raichur, N., Pirkl, J., Schelenz, L., Feigl, T., Yammine, G., Mutschler, C., Ott, F. (2026):

The S-ICDF Dataset: Sionna-Simulated Dynamic Interference Characterization and Direction Finding

in: arXiv: 2607.03411

 

Raichur, N., Heublein, L., Seuß, D., Deinzer, F., Ott, F. (2026):

Physics-Informed Domain-Invariant Feature Learning with Autoencoder-Driven Gaussian Clustering for Robust Non-line-of-Sight Scenarios

in: arXiv: 2607.02537

 

Heublein, L., Deutel, M., Plinge, A., Ott, F. (2026): 

Efficient Network Inference via Hardware-Aware Architecture Search, Model Prunning & Quantization

in: arXiv: 2606.23210

 

Heublein, L., Benschuh, F., Rügamer, A., Ott, F. (2026):

Receiver-Aware Analysis and Verification of the Spectral Separation Coefficient Under Interference-Induced Degradation

in: arXiv: 26.06.18196

 

Wielenberg, C., Ott, F., Heublein, L., Pahl, J., Mutschler, C., Feigl, T., Yammine, G., Seitz, J., and Schwerna, P., (2026):

Simulationsgestützte Funkpeilung in Mehrwegeumgebungen

In: DWT Angewandte Forschung für Verteidigung und Sicherheit

 

Raichur, N. L., Heublein, L., Pahl, J., Seuß, D., Mutschler, C., & Ott, F. (2026):

Adaptive & Efficient Sample Selection for Domain Incremental 5G Indoor Localization in Dynamic Multipath Environments

In: IEEE Journal of Indoor and Seamless Positioning and Navigation  (J-ISPIN), doi: 10.1109/JISPIN.2025.3648680, January 2026

 

Heublein, L., Feigl, T., Rügamer, A., Mutschler, C., and Ott, F. (2026):

Variational and Generative Models with Quantization for Disentanglement and Compressed Sensing of GNSS Spectrograms

In: IEEE Journal of Indoor and Seamless Positioning and Navigation (J-ISPIN), doi:10.1109/JISPIN.2026.3655630, January 2026

2025

Pirkl, J., Ott, J., Stahlke, M., Yammine, G., Feigl, T., Mtuschler, C. (2025):

Resilient Channel Charting Under Varying Radio Link Availability

In: Asilomar Conference on Signals, Systems, and Computers 2025

 

Ott, F., Karim, R., Heublein, L., Pahl, J., and Feigl, T., (2025):

Digitale Resilienz im Gefechtsfeld der Zukunft: Föderale KI-Sicherheit durch Digitales Watermarking

In: DWT Cyber Defence Conference

 

Heublein, L., Nowak, T., Feigl, T., Pahl, J., and Ott, F. (2025):

GNSS Jammer Direction Finding in Dynamic Scenarios Using an Inertial-based Multi-Antenna System

In: DGON Inertial Sensors and Applications (ISA), October 2025

 

Heublein, L., Wielenberg, C., Nowak, T., Feigl, T., Mutschler, C., and Ott, F. (2025):

Attention-Based Fusion of IQ and FFT Spectrograms with AoA Features for GNSS Jammer Localization

In: IEEE Radar Conference, doi:10.1109/RadarConf2559087.2025.11204959, Krakow, Poland, October 2025

 

Heublein, L., Kocher, S., Feigl, T., Rügamer, A., Mutschler, C., and Ott, F. (2025):

VAE-based Feature Disentanglement for Data Augmentation and Compression in Generalized GNSS Interference Classification

In: IEEE Intl. Conf. on Localization and GNSS (ICL-GNSS), doi:10.1109/ICL-GNSS65520.2025.11046129, June 2025

 

Ott, F., Heublein, L., Feigl, T., Rügamer, A. & Mutschler, C.:

Metric-Based Few-Shot Learning With Triplet Selection for Adaptive GNSS Interference Classification

In: IEEE Journal of Indoor and Seamless Positioning and Navigation, vol. 3, pp. 81-104, 2025, doi: 10.1109/JISPIN.2025.3562140, April 2025

 

Raichur, N., Heublein, L., Feigl, T., Nowak, T., Rügamer, A., Mutschler, C., & Ott, F. (2025):

Bayesian Learning-driven Prototypical Contrastive Loss for Class-Incremental Learning

In: Trans. on Machine Learning Research (TMLR), April 2025

 

Manjunath, H., Heublein, L., Feigl, T., & Ott, F. (2025):

Multimodal-to-Text Prompt Engineering in Large Language Models Using Feature Embeddings for GNSS Interference Characterization

In: IEEE Wireless Communications and Networking Conference (WCNC) March 2025

 

Heublein, L., Feigl, T., Nowak, T., Rügamer, A., Mutschler, C., & Ott, F. (2025):

Evaluating ML Robustness in GNSS Interference Classification, Characterization & Localization 

In: IEEE Intl. Conf. on Localization and GNSS (ICL-GNSS)

2024

Gaikwad, N. S., Heublein, L., Raichur, N. L., Feigl, T., Mutschler, C., & Ott, F. (2024):

Federated Learning with MMD-based Early Stopping for Adaptive GNSS Interference Classification

In: IEEE/IFIP Network Operations and Management Symposium (NOMS) Mai 2024

 

Heublein, L., Feigl, T., Rügamer, A., & Ott, F. (2024):

Achieving Generalization in Orchestrating GNSS Interference Monitoring Stations Through Pseudo-Labeling

In: DGON Positioning and Navigation for Intelligent Transport Systems (POSNAV)

 

Ott, F., Heublein, L., Raichur, N. L., Feigl, T., Hansen, J., Rügamer, A., & Mutschler, C. (2024):

Few-Shot Learning with Uncertainty-Based Quadruplet Selection for Interference Classification in GNSS Data

In: 2024 International Conference on Localization and GNSS (ICL-GNSS) (pp. 1-7)

 

Heublein, L., Raichur, N. L., Feigl, T., Brieger, T., Heuer, F., Asbach, L., ... & Ott, F. (2024):

Evaluation of (Un-) Supervised Machine Learning Methods for GNSS Interference Classification with Real-World Data Discrepancies

In: Proceedings of the 37th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2024) (pp. 1260-1293)

 

Publication of our data sets and methods

Transparency, reproducibility, and open exchange with the research community are central components of our work in the field of AI-based interference detection. That is why we publish selected data sets, models, and methods in our own GitLab repository.