Comparison of Radio Direction-Finding Technologies

Direction finding (or radiolocation) is an essential part of interference hunting and spectrum management activities. This presentation provides a technical introduction to the area of radio direction finding and discusses the fundamental principles of direction finding in the most common DF methodologies, including manual direction finding, Doppler, time difference of arrival, Watson-Watt, and correlative interferometry. In addition to comparing the relative strengths and weaknesses of each technology, recent developments and advances in direction finding technology and their field applications are also presented and discussed.