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. 2022 Apr 12;151(4):2507–2520. doi: 10.1121/10.0010162

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FIG. 10. — (Color online) sample bearing estimate results for 1/3 octave centered at 63 Hz from May 9, 2019 during passage of the single merchant vessel Aegean Highway. Upper panel displays intensity processing results {the size of the circles have been scaled to represent the relative level of the acoustic intensity with the smallest circles corresponding to anything $\leq 80$ dB [re 1 μPa/sqrt(Hz)] and the largest corresponding to anything $\geq 90$ dB [re 1 μPa/sqrt(Hz)]}; middle panel displays CBF results; lower panel displays MVDR results. Red asterisks indicate true bearings of merchant and good tracking by all three methods.