San Jose Navigation GPS Mobile Locator GM-158-USB Uživatelský manuál stáhnout pdf (Strana 25)

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This screen shows the result of the calculations made to create vertical and

horizontal slices of the measurements done. You see the horizontal slice (X

or Y) to the right and the Top View, the vertical slice, to the left.

For explanation of the two function-buttons and see next

section in this manual.

The options Angle, Aperture and Threshold are settings for the Top View

and stands for:

Angle – The space between the single lines of data is being filled with

the help of an interpolation scheme. This interpolation can be

performed in different directions where the angle parameter determines

this direction as -45 to +45. A value of 0 indicates orthogonal

interpolation, the normal case. This filter should mainly be used when

the target directions are not parallel with any of the profile sets.

Aperture – When targets are not exactly horizontal, it helps a lot if one

can view a depth/time interval instead of an instant time slice. This

parameter determines the thickness of the merged time slices. It should

be altered in order to better follow a dipping target or to view several

targets, on different depths, in the same top view. When the parameter

is altered, the time/depth span is shown interactively on the side view.

Threshold – this is composed filter. It mainly sets a threshold on the

top view data. Levels below the threshold are zeroed and levels above

are presented. The parameter is expressed in percent of maximum

amplitudes found the dataset.

The screen can be expanded by and displayed as:

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San Jose Navigation GPS Mobile Locator GM-158-USB Uživatelský manuál Strana 25