Imaging Audit

Echo Depth Adds an Independent Check

The final image uses the accepted 12 m echo and excludes the rejected 16 m echo. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.

highlighted = computed this step

Pair the grid with an accepted echo depth

The audit uses the accepted echo depth 12 m.

12 m12\ \text{m}
Accepted echo sourceThe audit cites the echo-depth source.1projection sourceunique reconstructionaccepted echo depthaccepted

A rejected echo stays outside the audit

The 16 m echo is visible as a contrast, not as the accepted source.

16 m16\ \text{m}
Echo depthA round-trip time is halved before speed turns it into depth.round tripdepth16rejected