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Important Dates

Conference: May 7-11, 2012
Reg. Registration Ends: April 20, 2012
Late Registration: April 21 to May 11

High Frequency Over the Horizon Radar


This tutorial has been cancelled.
It will not be available at Radarcon 2012.

Date: May 7, 2011
Time: 1:00pm - 5:00pm
Instructor: Giuseppe Aureliano Fabrizio

Tutorial Code: T-07


Sky-wave over-the-horizon (OTH) radars operating in the high frequency (HF) band 3-30 MHz exploit signal reflection from the ionosphere to detect and track man-made targets in the air and on the surface of the Earth at ranges an order of magnitude greater than conventional microwave radars that are typically limited to line-of-sight coverage.

More than half a century of international research and development in the area of OTH radar has resulted in the fielding of mature operational systems that are capable of cost-effective early-warning surveillance over very wide areas. In particular, the ability of OTH radar to monitor remote geographical regions where conventional microwave radar coverage is in practice either not convenient or feasible represents an important attribute of such systems.

The high performance and reliability achieved by state-of-the-art OTH radar systems is the outcome of a great deal of theoretical and experimental research in the areas of radio wave propagation, hardware system design, real time resource management as well as digital signal and data processing. The knowledge gained and shared through joint programs of international collaboration has also played a key role in the successful deployment of OTH radar systems.

This tutorial provides an introduction to the key principles of high frequency over-the-horizon (OTH) radar, including both sky-wave and surface-wave system typologies. The unique challenges of operating in the HF environment are described and connected to motivate and explain the design of operational OTH radar systems. This includes a description of the most influential characteristics of the propagation medium and signal environment, as well as the essential features of various radar sub-systems such as the antenna, transmitter and receiver. Conventional and adaptive signal processing methods for OTH radar are also covered in detail.

Numerous examples of experimental results from live-data processing on actual HF radar systems are presented, while new insights for the way ahead and a comprehensive list of references are also provided. The tutorial is expected to benefit students, engineers, researchers and managers with little or no background in the area of OTH radar, or professionals who wish gain a broader understanding of the important concepts in this fascinating field.

Instructor Biography

PhotoGiuseppe Aureliano Fabrizio received his electrical engineering and Ph.D. degrees from The University of Adelaide, Australia, in 1992 and 2000, respectively. Dr Fabrizio is   employed by the Defence Science and Technology Organization (DSTO), Australia, where he is currently a principal research scientist leading the EW and signal processing section of the high frequency radar branch. Dr Fabrizio is responsible for the development and practical implementation of innovative and robust adaptive signal processing techniques to enhance the operational performance of modern OTH radar systems. Dr Fabrizio is the principal author of over 45 peer reviewed journal and conference publications, and is a co-recipient of the prestigious M. Barry Carlton Award for the best paper published in the IEEE Transactions on Aerospace and Electronic Systems on two occasions (2003 and 2004). In 2007, he received the DSTO Science Excellence award for his contributions to adaptive signal processing in OTH radar, and was granted a DSTO Defence Science Fellowship to pursue collaborative research at La Sapienza University, Rome, Italy. Dr Fabrizio has delivered OTH radar tutorials at the 2008 IEEE Radar Conference, and at the 2010 IEEE International Radar Conference. He is an Australian representative on the international radar systems panel, and is an elected member of the IEEE AESS Board of Governers in 2012. Dr. Fabrizio was selected as the recipient of the distinguished IEEE AESS Fred Nathanson Memorial Radar Award in 2011 for his contributions to OTH radar and radar signal processing.  He is the author of a new text book “Over-the-Horizon Radar– Fundamental Principles, Signal Processing, Practical Applications”, published by McGraw-Hill Professional (First Edition, 2012).