Open AccessApproximate analysis of DF ambiguity probabilities for an interferometer direction‐finding system using gamma distributions
Author(s) -
Lee J.H.,
Jo J.I.,
Ryu H.K.,
Park B.J.
Publication year - 2019
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2019.2274
Subject(s) - ambiguity , algorithm , set (abstract data type) , direction finding , interferometry , element (criminal law) , computer science , mathematics , physics , optics , telecommunications , antenna (radio) , law , political science , programming language
To obtain high direction‐finding (DF) accuracy in electronic warfare applications, it is necessary to maximise the number of effective data points with a small angle‐of‐arrival error. Thus, a method to obtain the DF ambiguity probability for the selected set of array spacing is required. In this Letter, a novel method to obtain DF ambiguity probabilities for four‐ and five‐element arrays by using gamma distributions is presented. The DF ambiguity probability obtained by the proposed method for the five‐element array was in good agreement with the results of simulations. For the four‐element array, the proposed method produced data that showed approximate agreement with the results of simulations. Thus, the proposed method should be useful for future applications.