GSSI SIR 30, Manual

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Geophysical Survey Systems, Inc. SIR® 30
Manual
MN 93-101 Rev E 108
ChannelProperties:
The Channel properties element contains child elements that describe the antenna
position(s) relative to the GPS or Local 3D coordinates specified in the WayPt elements (which are
discussed later). Typically, when a file is collected with GPS, the ChannelProperties element contains the
positions of the antennas relative to the GPS location.
WayPtNameProperties:
The user can assign names to WayPts. All the different names the user uses are
contained in these elements.
ProfileGroup:
Contains some 3D display settings, and all the properties related to a group of scans. The
scan range is denoted in the scanRange child element. A separate child element RADAN3D contains the
3D display information. The third child element LocalGlobalCoordSync contains local 3D coordinates and
the corresponding Lat. Long. coordinates. This is typically used when a grid of data are collected, then the
user desires to register the data in global coordinates.
The final child element, File, contains all file-related information. Multiple file instances are permitted.
The children elements of File are scanRange, name, and Profile. A File may contain multiple Profile
elements. The Profile element contains a scanRange element, comment element, and a series of WayPt
elements. The WayPt elements contain elements which describe all the location information, mark
information, and names associated with scan numbers. It should be noted that the scan numbers in the
DZX file are global. That is, there is only one instance of each scan. This means that the location of an
element tied to a scan number, such as a layer pick, can be interpolated from the information contained in
the corresponding bounding WayPt element that contain location information.
LayerGroup:
Contains the interactive interpretation settings and picks for layers. As with previous
versions of RADAN, up to 7 layers can be picked. Therefore, there can be up to 7 LayerGroup elements.
Each LayerGroup is associated with a layer. It contains the interactive interpretation settings and all the
layer picks. The layer picks information is contained in the LayerWayPt elements. The LayerWayPt
children are tuples: scanSampChanProp and timeAmpDepVel. As the names imply, the tuples contain each
pick’s scan number, sample number, channel number, property (the property is intended for internal use),
arrival time, amplitude (in the units contained in the AmpUnits global setting), depth and velocity. Ground
truth information is also contained in a child element, GroundTruthWayPt.
TargetGroup:
Contains the interactive interpretation settings and picks for targets. These are basically the
same as the layer group. The major difference is that the number of target groups is not limited.
FreeDrawGroup:
Contains interactive interpretation picks that are done in free-draw mode on a 3D
dataset. These picks are not tied to scans. Their positions are registered on local or global coordinates.