Joel, S.S.JoelKumar, KrishnaKrishnaKumarGeorge, Nithin V.Nithin V.George2025-08-312025-08-312023-05-0110.1109/LSENS.2023.32677842-s2.0-85153794556https://d8.irins.org/handle/IITG2025/26808Direction-of-arrival (DOA) estimation methods based on conventional adaptive signal processing are not robust to outliers. A robust DOA estimation technique based on an exponential hyperbolic cosine function under such situations is proposed in this letter. To further enhance the performance of the proposed approach, a variable scale parameter strategy has been incorporated into the proposed scheme. The new methods have been shown to offer improved and robust DOA estimation performance.falseadaptive filtering | alpha-stable noise | array signal processing | exponential hyperbolic cosine function (EHCF) | robust direction-of-arrival (DOA) estimation | Sensor signal processingArticle247514721 May 2023157001904arJournal12