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Author

Sagar Dasgupta

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Open access Sep 2026

Beyond Legacy L1 C/A: Characterizing Advanced Multi-Frequency Spoofing Against Multi-Frequency GPS Receivers for Autonomous Navigation

Autonomous vehicles increasingly rely on high-end multi-frequency GNSS receivers that track modernized civil signals, such as L2C, L5, and L1C, alongside legacy GPS L1~C/A. Although multi-frequency operation improves robustness against natural error sources, its resilience against synchronous multi-band spoofing attack...

M. Ahmad, Muhammad Sami Irfan, Sagar Dasgupta et al. · 0 citations
Preprint Aug 2026

Treating Statewide CORS Networks as Spatially Distributed Sensors for GNSS Integrity Monitoring under Unintentional and Deliberate Threats

State departments of transportation (DOTs) in the United States increasingly rely on statewide continuously operating reference station (CORS) networks to support high-precision Global Navigation Satellite System (GNSS)-based positioning and timing for intelligent transportation systems. These networks also provide con...

M. Ahmad, Sagar Dasgupta, Muhammad Sami Irfan et al. · 0 citations
#software testing Preprint Sep 2026

LLMSec-AV: A Vulnerability Taxonomy and LLM-Driven Software Weakness Discovery Framework for Autonomous Vehicles

LLMSec-AV introduces an AV-specific, machine-readable vulnerability taxonomy for weakness discovery and shows that LLMs can complement conventional analyzers by identifying and organizing safety-relevant findings in real AV software.

Md. Wasiul Haque, Sagar Dasgupta, Mizanur Rahman · 0 citations
#small language model Preprint Aug 2026

Structured Driving-State Narratives for Small Language Model-Based GNSS Spoofing Detection

The presented framework can detect and classify GNSS spoofing attacks in real-time while requiring relatively low computational and memory resources, and is therefore suitable for deployment on resource-constrained vehicular computing platforms.

Abyad Enan, Sagar Dasgupta, Mizanur Rahman et al. · 0 citations

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