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http://dx.doi.org/10.9766/KIMST.2022.25.2.117

Direction Finding and Tracking using Single-Ring Circular Array Antenna and Space Division Table  

Park, Hyeongyu (The 1st Research and Development Institute, Agency for Defense Development)
Woo, Daewoong (The 1st Research and Development Institute, Agency for Defense Development)
Kim, Jaesik (The 1st Research and Development Institute, Agency for Defense Development)
Park, Jinsung (The 1st Research and Development Institute, Agency for Defense Development)
Publication Information
Journal of the Korea Institute of Military Science and Technology / v.25, no.2, 2022 , pp. 117-124 More about this Journal
Abstract
Single-ring circular array antennas can be applied to direction finding systems in order to use nose-section in other purposes, and the interferometry is a proper direction finding method to those systems. We usually make the interferometer baseline long enough to achieve good angular accuracy. However, an interferometer with baseline longer than a half-wavelength has the ambiguity problem. In this paper, we present a novel method for solving the ambiguity problem in interferometry systems. This technique is based on the amplitude comparison method and the space division table, and it can place a target within the angular region in which the ambiguity problem does not occur by roughly estimating direction-of-arrival. The Monte Carlo simulation results show that proposed method can effectively remove the ambiguity problem in the system.
Keywords
Direction Finding; Amplitude Comparison; Interferometer; Single-Ring Circular Array Antenna; Space Division Table;
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