Efficient Position Determination of Highly Directional RF Emitters via Iterated Beampattern Analysis

원문 초록

The localization of RF emitters has attracted significant attention particularly within the domain of electronic warfare. Most localization methods found in open literature are based on omnidirectional emitters. Directional emitters significantly modulate received signal strength (RSS) resulting in degraded performance for localization techniques not modeling this behavior. This paper introduces a direct position determination (DPD) approach utilizing RSS information and adaptive beamforming to localize emitters at very low signal-to-noise-ratio (SNR). The technique is then applied to directional emitters taking the imposed RSS modulation into account using a beampattern library. This results in significantly improved localization region confidence as compared to omnidirectional assumption approaches.