An Introduction to Radio Direction Finding Methodologies
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When: August 8, 2019
14:00 - 15:00 EDT (18:00 - 19:00 UTC)
Where: United States
Presenter: Paul Denisowski
Contact: Caleb Herr
703 549 1600

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An introduction to radio direction finding methodologies

Thursday, August 8, 2019 14:00 -15:00 EDT



Radio direction finding, also called radiolocation, is the process by which a source of radio frequency energy is localized.  Direction finding plays an increasingly important role in many civilian, government, and military applications, including areas such as interference hunting, search and rescue, (counter)intelligence, and localization of uncooperative sources. 

This presentation begins with a general overview of radio direction finding and radio direction finding principles, and then moves on to a discussion of the different methodologies which can be used to determine the physical location of an RF energy source.  The radio direction finding methodologies covered in this presentation include (1) manual direction finding and homing, (2) Doppler, (3) power / angle of arrival, (4) Watson-Watt, (5) correlative interferometry, and (6) time difference of arrival. For each of these methodologies, a brief technical introduction is followed by a discussion of that methodology’s relative strengths and weaknesses, appropriate applications, and the areas in which a given methodology is most commonly employed. 

Examples of how these technologies are implemented, primarily in civilian applications, will also be provided.  Throughout the presentation, emphasis is placed on the real-world applications of each of these direction-finding methods, with discussions supported by actual examples of how these methodologies are being used in field applications. 



Paul Denisowski is an Product Management Engineer at Rohde & Schwarz North America, where he specializes in radiomonitoring, radiolocation (direction finding), and interference hunting solutions, as well as general purpose test and measurement instrumentation. A frequent author and presenter on a wide variety of topics, he has over 20 years of field application experience, including extensive work in direction finding and interference hunting for commercial and military/government customers.

Paul previously held field and research positions with HP/Agilent, Fujitsu, Alcatel, and Nortel, and has both a Master's degree in Electrical Engineering from North Carolina State University as well as a Master’s degree in Germanic Languages from UNC-Chapel Hill. He was also a visiting lecturer at the Tokyo Institute of Technology under a joint grant from the US National Science Foundation and the Japanese Ministry of Education (Monbusho) and has been an active amateur radio operator (KO4LZ) for more than three decades. 



*Registration will close one hour prior to the start of the webinar (1pm ET)! Any registrations taken after this time will not be able to view the live webinar.

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For questions, please contact Caleb Herr.


PLEASE NOTE:  By registering for this webinar, you are providing explicit consent that the details of your registration may be used by the Association of Old Crows (AOC), the presenter, and/or the sponsor(s) to contact you via email for informational and marketing purposes.


The entire presentation and Q&A will be recorded for viewing approximately 24 hours after the event.  On-demand viewing of recorded webinars is reserved as a benefit for dues-paying AOC members only.  You can join the AOC here.  You can find the link to the recording in our AOC Virtual Series Archive.




With over 13,000 members internationally, the Association of Old Crows is an organization for individuals who have common interests in Electronic Warfare (EW), Electromagnetic Spectrum Management Operations, Cyber Electromagnetic Activities (CEMA), Information Operations (IO), and other information related capabilities. The Association of Old Crows provides a means of connecting members and organizations nationally and internationally across government, defense, industry, and academia to promote the exchange of ideas and information, and provides a platform to recognize advances and contributions in these fields.
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