2026 Todd E. Humphreys: Engineering and Technology Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	Current World Ranking	National Ranking	Current National Ranking	Publications	Citations
Engineering and Technology	46	5106	4916	1450	1339	178	9368

Overview

Todd E. Humphreys is affiliated with The University of Texas at Austin in the United States. Their research spans a broad range of topics primarily focused on engineering and computer science, with a strong emphasis on aerospace and electrical engineering disciplines.

The main fields of study covered by Humphreys include:

Engineering
Computer Science

Subfields within these areas of expertise include:

Aerospace Engineering
Electrical and Electronic Engineering
Computer Networks and Communications
Astronomy and Astrophysics
Signal Processing

The core research topics that Humphreys focuses on comprise:

GNSS positioning and interference
Indoor and Outdoor Localization Technologies
Satellite Communication Systems
Wireless Communication Networks Research
Inertial Sensor and Navigation
Robotics and Sensor-Based Localization
Radar Systems and Signal Processing

Humphreys has published extensively in several prominent venues. Frequent publication forums include:

Proceedings of the Satellite Division's International Technical Meeting (Online)/Proceedings of the Satellite Division's International Technical Meeting (CD-ROM)
arXiv (Cornell University)
NAVIGATION Journal of the Institute of Navigation
IEEE Transactions on Aerospace and Electronic Systems
Proceedings of the Institute of Navigation... International Technical Meeting/Proceedings of the... International Technical Meeting of The Institute of Navigation

Frequent collaborators in their work are:

Peter A. Iannucci
Andrew Graff
Lakshay Narula
Zachary Clements
James E. Yoder

Recent papers authored or co-authored by Humphreys include:

"Signal Structure of the Starlink Ku-Band Downlink" (2023), published in IEEE Transactions on Aerospace and Electronic Systems
"Fused Low-Earth-Orbit GNSS" (2022), published in IEEE Transactions on Aerospace and Electronic Systems
"First results from three years of GNSS interference monitoring from low Earth orbit" (2021), published in NAVIGATION Journal of the Institute of Navigation
"GNSS Software-Defined Radio: History, Current Developments, and Standardization Efforts" (2024), published in NAVIGATION Journal of the Institute of Navigation
"GNSS Software Defined Radio: History, Current Developments, and Standardization Efforts" (2022), published in Proceedings of the Satellite Division's International Technical Meeting (Online)/Proceedings of the Satellite Division's International Technical Meeting (CD-ROM)

Best Publications

Assessing the Spoofing Threat: Development of a Portable GPS Civilian Spoofer

Todd E. Humphreys;Brent M. Ledvina;Mark L. Psiaki;Brady W. O'Hanlon

866
Citations
Unmanned Aircraft Capture and Control Via GPS Spoofing

Andrew J. Kerns;Daniel P. Shepard;Jahshan A. Bhatti;Todd E. Humphreys

815
Citations
GNSS Spoofing and Detection

Mark L. Psiaki;Todd E. Humphreys

751
Citations
Evaluation of the vulnerability of phasor measurement units to GPS spoofing attacks

Daniel P. Shepard;Todd E. Humphreys;Aaron A. Fansler

413
Citations
Detection Strategy for Cryptographic GNSS Anti-Spoofing

T. E. Humphreys

305
Citations
Hostile Control of Ships via False GPS Signals: Demonstration and Detection

Jahshan Bhatti;Todd E. Humphreys

281
Citations
Practical Cryptographic Civil GPS Signal Authentication

K. Wesson;M. Rothlisberger;Todd E Humphreys

270
Citations
Receiver-Autonomous Spoofing Detection: Experimental Results of a Multi-Antenna Receiver Defense against a Portable Civil GPS Spoofer

Paul Y. Montgomery;Todd E. Humphreys;Brent M. Ledvina

267
Citations
GNSS Signal Authentication Via Power and Distortion Monitoring

Kyle D. Wesson;Jason N. Gross;Todd E. Humphreys;Brian L. Evans

263
Citations
GPS Spoofing Detection via Dual-Receiver Correlation of Military Signals

Mark L. Psiaki;Brady W. O'Hanlon;Jahshan A. Bhatti;Daniel P. Shepard

227
Citations
Evaluation of Smart Grid and Civilian UAV Vulnerability to GPS Spoofing Attacks

Daniel P. Shepard;Jahshan A. Bhatti;Todd E. Humphreys;Aaron A. Fansler

221
Citations
Signal Characteristics of Civil GPS Jammers

Ryan H. Mitch;Ryan C. Dougherty;Mark L. Psiaki;Steven P. Powell

213
Citations
Modeling the Effects of Ionospheric Scintillation on GPS Carrier Phase Tracking

Todd E Humphreys;Mark L Psiaki;Paul M Kintner

186
Citations
An Evaluation of the Vestigial Signal Defense for Civil GPS Anti-Spoofing

Kyle D. Wesson;Daniel P. Shepard;Jahshan A. Bhatti;Todd E. Humphreys

164
Citations
Simulating Ionosphere-Induced Scintillation for Testing GPS Receiver Phase Tracking Loops

T.E. Humphreys;M.L. Psiaki;J.C. Hinks;B. O'Hanlon

159
Citations
The Texas Spoofing Test Battery: Toward a Standard for Evaluating GPS Signal Authentication Techniques

Todd E. Humphreys;Jahshan A. Bhatti;Daniel Shepard;Kyle Wesson

141
Citations
Observability Analysis of Collaborative Opportunistic Navigation With Pseudorange Measurements

Zaher M. Kassas;Todd E. Humphreys

141
Citations
Signal Structure of the Starlink Ku-Band Downlink

Unknown

139
Citations
GPS Carrier Tracking Loop Performance in the presence of Ionospheric Scintillations

Todd E. Humphreys;Mark L. Psiaki;Paul M. Kintner;Brent M. Ledvina

131
Citations
GNSS Spoofing Detection Using Two-Antenna Differential Carrier Phase

Mark L. Psiaki;Brady W. O'Hanlon;Steven P. Powell;Jahshan A. Bhatti

129
Citations
Drone Hack: Spoofing Attack Demonstration on a Civilian Unmanned Aerial Vehicle

Daniel P. Shepard;Jahshan A. Bhatti;Todd E. Humphreys

118
Citations