High Resolution Subsurface Imaging of Deep Targets based on Distributed Sensor Networks. - Fikadu T. Dagefu; Kamal Sarabandi (IGARSS (2), 2009)

Soil dielectric and senisitivity analysis for subsurface imaging applications based on distributed Sensor Networks. - Fikadu T. Dagefu; Kamal Sarabandi (IGARSS, 2010)

A 3D subsurface imaging technique based on distributed near-ground sensors: Investigation using scale model measurements. - Fikadu T. Dagefu; Kamal Sarabandi (IGARSS, 2011)

High-Resolution Subsurface Imaging of Deeply Submerged Targets Based on Distributed Near-Ground Sensors. - Fikadu T. Dagefu; Kamal Sarabandi (IEEE Trans. Geosci. Remote. Sens., 2014)

Measurement and characterization of the short-range low-VHF channel. - Fikadu T. Dagefu; Gunjan Verma; Chirag Rao; Paul L. Yu; Brian M. Sadler; Kamal Sarabandi (WCNC, 2015)

Implications of time/frequency synchronization tradeoff of quasi-synchronous multi-carrier DS-CDMA for robust communications at lower VHF. - Gunjan Verma; Fikadu T. Dagefu; Brian M. Sadler; Predrag Spasojevic (MILCOM, 2016)

The effect of inter-user delay and channel phase response on MC-CDMA using WBE codes with application to lower VHF. - Fikadu T. Dagefu; Predrag Spasojevic; Gunjan Verma; Brian M. Sadler (ACSSC, 2017)

An experimental study of quasi-synchronous multiuser communications in cluttered scenarios at low VHF. - Fikadu T. Dagefu; Gunjan Verma; Predrag Spasojevic; Brian M. Sadler (ICMCIS, 2017)

Low-Power Low-VHF Ad-Hoc Networking in Complex Environments. - Jihun Choi; Fikadu T. Dagefu; Brian M. Sadler; Kamal Sarabandi (IEEE Access, 2017)

Scalable Sporadic Medium Access for Complex Propagation Environments. - Chirag Rao; Fikadu T. Dagefu; Gunjan Verma; Predrag Spasojevic; Brian M. Sadler (PIMRC, 2018)

DOA Estimation for Autonomous Systems in Complex Propagation Environments. - Gunjan Verma; Fikadu T. Dagefu; Brian M. Sadler; Jeffrey N. Twigg; Jonathan Fink (SPAWC, 2018)

Direction of Arrival Estimation With the Received Signal Strength Gradient. - Gunjan Verma; Fikadu T. Dagefu; Brian M. Sadler; Jeffrey N. Twigg (IEEE Trans. Veh. Technol., 2018)

Multi-mode Autonomous Communication Systems. - Miguel Calvo-Fullana; Fikadu T. Dagefu; Brian M. Sadler; Alejandro Ribeiro (ACSSC, 2019)

Directional Communication Enabled by Mobile Parasitic Elements. - Fikadu T. Dagefu; Jeffrey N. Twigg; Chirag Rao; Brian M. Sadler (ICMCIS, 2019)

A Low-Complexity Approach to UV Communication Channel Model Evaluation. - Robert J. Drost; Michael J. Weisman; Fikadu T. Dagefu; C. Hakan Arslan (ICMCIS, 2019)

Low Probability of Detection QS-MC-DS-CDMA for Low VHF. - Chryssalenia Koumpouzi; Predrag Spasojevic; Fikadu T. Dagefu (ICMCIS, 2019)

Simultaneous Synchronization and Detection in Loosely Synchronized Tiny Packet Networks. - Zongwen Tang; Predrag Spasojevic; Chryssalenia Koumpouzi; Fikadu T. Dagefu (Sarnoff Symposium, 2019)

Robotic Parasitic Array Optimization in Outdoor Environments. - Jeffrey N. Twigg; Fikadu T. Dagefu; Nikhil Chopra; Brian M. Sadler (SSRR, 2019)

Channel Model Validation for and Extensions of an Ultraviolet Networking Optimization Framework. - C. Hakan Arslan; Fikadu T. Dagefu; Michael J. Weisman; Robert J. Drost (VTC Fall, 2019)

Real-Time Digital Video Streaming at Low-VHF for Compact Autonomous Agents in Complex Scenes. - Jihun Choi; Chirag Rao; Fikadu T. Dagefu (VTC Spring, 2019)

Distributed Adaptive Beamforming and Nullforming for Covert Wireless Communications. - Justin Kong 001; Fikadu T. Dagefu; Brian M. Sadler (VTC Fall, 2019)

Performance Analysis of Signal Pattern Reducing Techniques for Low Probability of Detection. - Chryssalenia Koumpouzi; Predrag Spasojevic; Fikadu T. Dagefu (VTC Fall, 2019)

Two-Element Biomimetic Antenna Array Design and Performance. - Richard J. Kozick; Fikadu T. Dagefu; Brian M. Sadler (ICASSP, 2020)

Simultaneous Beamforming and Nullforming for Covert Wireless Communications. - Justin Kong 001; Fikadu T. Dagefu; Brian M. Sadler (VTC Spring, 2020)

Performance Analysis of Distributed Beamforming With Random Phase Offsets. - Justin Kong 001; Fikadu T. Dagefu; Brian M. Sadler (WCNC, 2020)

Coverage Analysis of Distributed Beamforming With Random Phase Offsets Using Ginibre Point Process. - Justin Kong 001; Fikadu T. Dagefu; Brian M. Sadler (IEEE Access, 2020)

Distributed Beamforming in the Presence of Adversaries. - Justin Kong 001; Fikadu T. Dagefu; Brian M. Sadler (IEEE Trans. Veh. Technol., 2020)

On the Analytical Communication Performance of LPD QS-CDMA with Reduced Cyclostationary Characteristics. - Chryssalenia Koumpouzi; Fikadu T. Dagefu; Justin Kong 001; Predrag Spasojevic (ACSCC, 2021)

Improved LPD Characteristics for QS-DS-CDMA Employing Randomization Techniques. - Chryssalenia Koumpouzi; Predrag Spasojevic; Fikadu T. Dagefu (IEEE Trans. Inf. Forensics Secur., 2021)

Multi-Group Distributed Nullforming and Sectorized Jamming. - Justin Kong 001; Fikadu T. Dagefu; Brian M. Sadler (IEEE Trans. Veh. Technol., 2021)

Intelligent Reflecting Surface Assisted Covert Communication With Transmission Probability Optimization. - Justin Kong 001; Fikadu T. Dagefu; Jihun Choi; Predrag Spasojevic (IEEE Wirel. Commun. Lett., 2021)

Fast Distributed Beamforming without Receiver Feedback. - Kushal Chakrabarti; Amrit S. Bedi; Fikadu T. Dagefu; Jeffrey N. Twigg; Nikhil Chopra (IEEECONF, 2022)

Covert Communications in Low-VHF/Microwave Heterogeneous Networks. - Justin Kong 001; Fikadu T. Dagefu; Jihun Choi; Predrag Spasojevic; Chryssalenia Koumpouzi (WCNC, 2022)

Robotic Parasitic Array Control for Increased RSS in Non-Line-of-Sight. - Jeffrey N. Twigg; Fikadu T. Dagefu; Nikhil Chopra; Brian M. Sadler (IEEE Robotics Autom. Lett., 2022)

Non-Line-Of-Sight Ranging via Ultraviolet Signals. - C. Hakan Arslan; Fikadu T. Dagefu; Jeffrey N. Twigg; Terrence J. Moore (ICMCIS, 2023)

Calibration of Multi-Robot Coherent Beamforming. - Mitchell J. Grabner; Fikadu T. Dagefu; Jeffrey N. Twigg; Babak Azimi-Sadjadi; Brian M. Sadler (ICMCIS, 2023)

Range Estimation of an Ultraviolet Communication Source using a Mobile Sensor. - Terrence J. Moore; Fikadu T. Dagefu; C. Hakan Arslan; Michael J. Weisman; Robert J. Drost (WCNC, 2023)

A Compact Three-Port Antenna With Enhanced Inter-Port Isolation for Polarization and Pattern Diversity. - Jihun Choi; Fikadu T. Dagefu (IEEE Access, 2023)

Exploiting Polarization Diversity to Improve Cyclostationary-Based LPD Properties of CDMA. - Chryssalenia Koumpouzi; Fikadu T. Dagefu; Jihun Choi; Justin Kong 001; Predrag Spasojevic (IEEE Wirel. Commun. Lett., 2023)

Phantom Guard: An MDP-Based Anti-Jamming Defense Strategy for Military 5G Networks. - Mahmudul Hassan Ashik; Moinul Hossain; Jeffrey N. Twigg; Fikadu T. Dagefu (MILCOM, 2024)

Experimental Analysis of Covert CDMA Against Energy and Cycle Detecting Adversaries. - S. Johnson; Morriel Kasher; Rahul Aggarwal; J. Callinan; M. Elo; Predrag Spasojevic; Fikadu T. Dagefu; Justin Kong 001; Jihun Choi; Brian Kim (MILCOM, 2024)

Reinforcement Learning Based Covert Routing with Node Failure Resiliency for Heterogeneous Networks. - Brian Kim; Justin Kong 001; Terrence J. Moore; Fikadu T. Dagefu (MILCOM, 2024)

Covert Communication with a Ginibre Field of Interferers. - Justin Kong 001; Fikadu T. Dagefu (WCNC, 2024)

Covert Communications with Simultaneous Multi-Modal Transmission. - Rahul Aggarwal; Justin Kong 001; Terrence J. Moore; Jihun Choi; Predrag Spasojevic; Fikadu T. Dagefu (WISEC, 2024)

Low Frequency Multi-Robot Networking. - Brian M. Sadler; Fikadu T. Dagefu; Jeffrey N. Twigg; Gunjan Verma; Predrag Spasojevic; Richard J. Kozick; Justin Kong 001 (IEEE Access, 2024)

Optimal Routing and Link Configuration for Covert Heterogeneous Wireless Networks. - Amna Gillani; Beatriz Lorenzo; Majid Ghaderi; Fikadu T. Dagefu; Dennis Goeckel (CoRR, 2024)

Covert Routing in Heterogeneous Networks. - Justin Kong 001; Fikadu T. Dagefu; Terrence J. Moore (IEEE Trans. Inf. Forensics Secur., 2024)

Covert Communication in Intelligent Reflecting Surface Assisted Networks With a Friendly Jammer. - Justin Kong 001; Fikadu T. Dagefu; Jihun Choi; Rahul Aggarwal; Predrag Spasojevic (IEEE Trans. Veh. Technol., 2024)

Decentralized Covert Routing in Heterogeneous Networks Using Reinforcement Learning. - Justin Kong 001; Terrence J. Moore; Fikadu T. Dagefu (IEEE Commun. Lett., 2024)

Reinforcement Learning for Covert Heterogeneous Wireless Network Routing with a Threat Region. - Brian Kim; Justin Kong 001; Terrence J. Moore; Fikadu T. Dagefu (CCNC, 2025)

Optimal Link Configuration for Covert Heterogeneous Wireless Networks with Power Constraints. - Amna Gillani; Beatriz Lorenzo; Majid Ghaderi; Fikadu T. Dagefu; Dennis Goeckel (CISS, 2025)

DEER: Simultaneous Multi-Modal Decentralized Energy Efficient Covert Routing. - Khandaker Foysal Haque; Justin Kong 001; Terrence J. Moore; Francesco Restuccia 001; Fikadu T. Dagefu (WCNC, 2025)

Opportunistic Jamming for Covert Communications: Ginibre Point Process Modeling and Analysis. - Justin Kong 001; Fikadu T. Dagefu (IEEE Commun. Lett., 2025)