GSSI 200 HS, Руководство пользователя

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Geophysical Survey Systems, Inc. GS Series
200 HS Antenna
MN27-151 Rev A 14
• Slide:
Shifts the center of the color table associated with zero amplitude in either the positive or
negative direction. This can help to accentuate either the positive or the negative values.
Set Depth:
This feature is used when you have a target at a known depth. You will need to collect some
data as close as possible to the point of known depth. This is also known as adding “ground truth” and can
result in very accurate depth calculations in homogenous ground conditions. Pressing this icon will allow
you to adjust the current depth of the horizontal bar on the screen.
Take Screenshot:
Tapping this control will save a screenshot of the current display. Screenshots are
stored in the project folder.
Open Map View:
This control displays the current location from a series of pre-loaded map files. If you
are collecting with GPS, you will be able to follow your track superimposed on the map. Tapping the
control multiple times toggles through the three available map screen display sizes.
Focus Mode:
Focus mode is a display filter which will collapse any hyperbolas present in the data,
including all of the +/- bands of the reflection. It is intended to assist in calibrating the dielectric constant.
Once the button is tapped, you’ll be able to pinch the screen to increase/decrease the dielectric constant to
better “focus” your targets. Ideally, the hyperbolic features are focused into dots.
O-Scope Display:
Toggling this control will display the oscilloscope view at the right edge of the data
screen. The O-Scope scale matches the vertical scale of the linescan profile and displays the data one scan
at a time. The center vertical line denotes zero amplitude. Positive values are to the right and negative to
the left. The red line superimposed on the scan is a representation of the time variable gain curve. Gain
point locations are noted with red dots.
Mark:
Tapping this icon places a vertical line on the screen at the antenna’s current position. This can be
useful for noting a target’s location, areas of interest, or to distance normalize a file collected in time-
mode.
Status Bar
The three icons at the lower right corner are status indicators. They are for
display only and tapping them will not open any control items.
Battery Status:
Indicates remaining battery life. The level will progress from green to yellow to red as
the battery drains.
Overspeed Indicator:
This is active when you are collecting in distance mode with a survey wheel.
There is a maximum rate at which the system can collect data with respect to certain parameters. If you
move the antenna too fast, the system will not have time to collect and store the required scans, and data
loss will result. Any rate up to the maximum will produce valid data. The indicator will change color as
you approach the maximum speed possible.
GPS Data Validity:
The color of this indicator reports the GPS signal quality and is based on HDOP
(Horizontal Dilution of Precision). Green is the highest with the GPS reporting a high-quality fix on many
satellites. Yellow shows that the data is still adequate for positioning but that the accuracy has suffered.
Red means that there are not enough satellites for a proper fix and that the GPS data is invalid.