All in a Spin about Reticle-Based Seekers

Infrared (IR)-guided (heat-seeking) missiles have been and continue to be extremely widely used in everything from large surface-to-air missiles (SAMs) to tiny shoulder-launched missiles. While many of the reasons for this popularity arise as a result of the underlying physics, the (relative) simplicity and resulting (relatively) low cost of such weapons have contributed significantly to this popularity. Historically, the electro-mechanical reticle-based seekers used in IR seekers have been one of the driving factors behind the simplicity of IR seekers. And while modern IR seekers have largely switched to the use of imaging sensors, reticle-based seekers will remain relevant for the foreseeable future due to stockpiles of older IR-guided weapons, including those in the hands of irregular forces.


The development of reticle-based seekers from simple ideas dating back to the Second World War to advanced-pseudo imaging systems will be explored in this presentation. The main characteristics of each concept, including the reticle pattern and the electro-mechanical modulation of the incoming IR radiation, will be outlined to show how such systems operate.

Speaker and Presenter Information

Dr. Warren du Plessis received the B.Eng. (Electronic) and M.Eng. (Electronic) and Ph.D. (Engineering) degrees from the University of Pretoria in 1998, 2003 and 2010respectively, winning numerous academic awards including the prestigious Vice-Chancellor and Principal's Medal. He has been working in EW and radar since 2006 and is currently a Professor at the University of Pretoria. Prof. du Plessis is a registered Professional Engineer (Pr.Eng.), a Senior Member of the Institute for Electrical and Electronics Engineers (IEEE), a Lifetime Member of the Association of Old Crows (AOC), a member of the AOC Aardvark Roost Board, and a Member of the Institution of Engineering and Technology (IET). He is author of 57 published and accepted peer-reviewed journal and conference papers, and is lead or sole author of 32 of these, thereby demonstrating his leading role in developing and evaluating innovative new concepts. While his primary research focus has been cross-eye jamming, Prof. du Plessis has also published on issues such as data reduction, cognitive EW, and possible approaches to enhancing EW training.

Relevant Government Agencies

Air Force, Army, Navy & Marine Corps, Intelligence Agencies, DOD & Military, Dept of Veterans Affairs, Other Federal Agencies, Coast Guard, National Guard Association, Federal Government, State & Local Government

Event Type

Thu, Apr 22, 2021, 2:00pm - 3:00pm ET

Complimentary:    $ 0.00

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