Teledyne SeaBat T Series, Operator'S Manual, Page: 76 / 152

SYSTEM PERFORMANCE AND DATA TYPES
SeaBat T-Series Subsea Operator's Manual Page 64 January 31, 2019
Version 7
Bottom detection point
Adaptive gate
Comparison
window
A
B
C
Figure 38: Brightness Test
7.7.2 Colinearity Test
In general terms, this test will pass if a bottom detection point sample number for a given beam
falls on or near a line drawn through its neighboring beams' bottom detection points. This is
achieved using a moving polynomial fit of the points on either side of each point. If a given point is
within the window of the line fit, it is marked colinear.
This process is done in stages that begin with the central beams and moving outward on each
side of the wedge in turn.
For instructions on how to display the test results, refer to the RESON Sonar UI User Manual
(
see Appendix E Reference Documentation ).
Detection point flagged with Poor colinearity
Line fit
Window extent
Figure 39: Colinearity Flags