[PDF][PDF] Semperfi: Anti-spoofing gps receiver for uavs

H Sathaye, G LaMountain, P Closas… - Network and Distributed …, 2022 - par.nsf.gov
It is well-known that GPS is vulnerable to signal spoofing attacks. Although several spoofing
detection techniques exist, they are incapable of mitigation and recovery from stealthy …

Cryptography is not enough: Relay attacks on authenticated GNSS signals

M Motallebighomi, H Sathaye, M Singh… - arxiv preprint arxiv …, 2022 - arxiv.org
Civilian-GNSS is vulnerable to signal spoofing attacks, and countermeasures based on
cryptographic authentication are being proposed to protect against these attacks. Both …

Location-independent GNSS Relay Attacks: A Lazy Attacker's Guide to Bypassing Navigation Message Authentication

M Motallebighomi, H Sathaye, M Singh… - Proceedings of the 16th …, 2023 - dl.acm.org
In this work, we demonstrate the possibility of spoofing a GNSS receiver to arbitrary
locations without modifying the navigation messages. Due to increasing spoofing threats …

Increasing international civil aviation resilience: A proposal for nomenclature, categorization and treatment of new interference threats

I Fernández-Hernández, T Walter, K Alexander… - Proceedings of the 2019 …, 2019 - ion.org
Electromagnetic interference can degrade civil Global Navigation Satellite System (GNSS)
signals and services, and in some cases result in integrity failures. The aviation community …

Semperfi: A spoofer eliminating gps receiver for uavs

H Sathaye, G LaMountain, P Closas… - arxiv preprint arxiv …, 2021 - arxiv.org
It is well-known that GPS is vulnerable to signal spoofing attacks. Although several spoofing
detection techniques exist, they are incapable of mitigation and recovery from stealthy …

A Survey on Adversarial Contention Resolution

I Banicescu, T Chakraborty, S Gilbert… - arxiv preprint arxiv …, 2024 - arxiv.org
Contention resolution addresses the challenge of coordinating access by multiple processes
to a shared resource such as memory, disk storage, or a communication channel. Originally …

Triple‐mode resonant null frequency scanning antenna with positive scanned slope

XH Mao, WJ Lu, FY Ji, L Zhu - International Journal of RF and …, 2022 - Wiley Online Library
A novel design approach to triple‐mode resonant null frequency scanning antenna (NFSA)
with positive scanned slope is proposed. Firstly, a circular sector patch radiator with short …

Design Approach to Azimuthal Null Frequency Scanning Circular Sector Patch Antenna under Triple-Mode Resonance

XH Mao, WJ Lu, FY Ji, H Zhang… - IEEE Antennas and …, 2023 - ieeexplore.ieee.org
A novel triple-mode resonant circular sector patch antenna with azimuthal null frequency
scanning functionality is advanced in this article. The implicit periodicity of the roots of the …

Null‐depth coordinated synthesis design approach to azimuthal null frequency scanning antennas

XH Mao, WJ Lu, FY Ji, L Zhu - IET Microwaves, Antennas & …, 2024 - Wiley Online Library
A novel synthesis design approach to multimode resonant, azimuthal null frequency
scanning antennas (ANFSAs) coordinated by null‐depth is presented. The antenna is …

Design of small GPS anti-jam antenna

Y Zheng, Y Huang, YE Wang - 2018 IEEE International …, 2018 - ieeexplore.ieee.org
We propose a small GPS anti-jam antenna. The method is based on adaptive null-steering
processing with miniature antenna elements. Our antenna system can maintain GPS tacking …