Figure 3
From: Understanding the impact of along-transect resolution on acoustic surveys
Illustration of the difference in the fraction of the area of the along-transect plane that is sampled, depending on the distance between two contiguous pings (\({p}_{i}\)), the maximum range (\(R\)) and the transducer beamwidth (\(\alpha\)) according to Eq. (17). In (A) the sampling resolution is low, and there are unsampled areas in all ranges. In (B) the diameter of the ideal beam cone is equal to the distance between contiguous pings. Beyond this point, as \({p}_{i}\) decreases (C), there is increasing overlap between contiguous pings, and the sampled fraction increases, with the unsampled areas confined to the upper layers of the water column.
