Triton BathyPro - Manual (Page 103)

Figure 57. Example of a roll test completed during a patch test
11. In the Patch Test dialog box:
a. Click the Patch Area button, then use your trackball to draw a small
rectangle in an appropriate area of the GIS image. This area will be
used to derive the offset values for the appropriate test and can be
changed by selecting a new area. In general, outer beams should
be selected for roll and yaw tests, and nadir beams should be used
for latency and pitch tests. Of course, you need to choose an area
where the two data sets overlap! The standard window, pan, and
zoom controls can be used to help pick the appropriate area.
b. In the Automatic Test panel, examine the Range values. Default
settings are -3 to +3 degrees at 0.5 degree step. Change them if
necessary. Click RUN when you are ready to compute the offset.
June 2004 BathyPro User’s Manual 103