Session 2.6e: Tutorial- UAV GNSS Jamming Concepts and Techniques
Tracks
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| Wednesday, November 19, 2025 |
| 1:30 PM - 2:30 PM |
| Sutherland Theatre |
Details
Global Navigation Satellite System (GNSS) signals are a critical component of Position, Navigation, and Timing (PNT) services, which underpin modern military and civilian operations. Effective denial of GNSS reception can be achieved through targeted jamming, a capability that has evolved alongside advancements in anti-jamming technologies. Controlled Radiation Pattern Antennas (CRPAs) represent a significant enhancement over fixed antenna designs, employing beamforming and null-steering to suppress interference sources.
This presentation outlines key concepts in GNSS jamming, with a focus on techniques to overcome CRPA resilience. Topics include planning and deploying jamming networks, determining jammer power and placement relative to antenna characteristics, and modelling CRPA behaviour under various beam suppression strategies.
Three primary methods of beam suppression—uniform linear array null-steering, adaptive beamforming with rapid beam/null switching, and statistical mitigation models—are examined for their impact on jamming effectiveness. Operational considerations such as frequency selection, bandwidth, antenna geometry, and environmental clutter are also addressed, providing a comprehensive view of the strategies and technical parameters that shape GNSS jamming outcomes.
Speaker
Mr. Farhad Sedghi
Technical Director Atdi South Pacific
Atdi South Pacific
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Biography
Farhad Sedghi is currently the Technical director at ATDI South Pacific. His responsibilities encompass providing training, and technical consulting services across a wide range of wireless technologies, from 2G to 5G networks, broadcasting, critical communications, IoT, and rail communications. He has performed training for various Defence organisations on topics of Communications and Electronic Warfare – EW.
Farhad graduated from the University of Technology, Sydney (UTS) with a Bachelor of Electrical Engineering, majoring in Telecommunications, and later completed Master of Engineering Management in the same university.
