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Author

Zbigniew Piotrowski

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3 papers indexed here

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Conference Sep 2026

GNSS Interference Classification Using Handcrafted Signal Features and Lightweight Neural Models

This paper compares three approaches to six-class Global Navigation Satellite System (GNSS) interference classification: classical classifiers trained on 17 handcrafted spectral and statistical features, a one-dimensional convolutional neural network using two-channel raw IQ samples, and a two-dimensional convolutional...

Tomasz Walczyna, Zbigniew Piotrowski · 0 citations
Conference Sep 2026

Effective Bandwidth Analysis for Acoustic UAV Detection Using Log-Mel Spectrograms

Reliable acoustic UAV detection requires preserving discriminative rotor and motor signatures while limiting non-informative spectral content. However, the effective bandwidth required by deep learning-based detectors remains insufficiently understood independently of sampling rate, feature extraction, and model archit...

Gabriel Jekateryńczuk, Zbigniew Piotrowski · 0 citations
Preprint Sep 2026

What Limits Robustness in Deep Image Watermarking: An Analysis of Mechanisms and Their Scaling Across Capacities

Robustness remains the principal open problem in deep image watermarking, and what limits it becomes sharper as payload grows. This paper asks whether capacity is itself the limit or only makes other limits visible, and answers in two parts. The first organizes the distortions a watermark must survive and the strategie...

M. Bistroń, Zbigniew Piotrowski · 0 citations

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