Create Depth Response Curve Plot

Use the Create Depth Response Curve Plot option (Geosoft.uxo.gxnet.dll(Geosoft.GX.UXO.UxaDepthResponseCurvePlot;Run)*) to calculate a depth response curve for a target of interest (TOI) based on its orientation and a database of signature library polarizations.

Expand to see the locations (menus) where this option is available.

Create Depth Response Curve Plot dialog options

Sensor

Configuration

Select the sensor configuration. The default values are read from the sensor configuration table; refer to the Application Notes below.

Script Parameter: UXANALYZE.FWDMODEL_SENSORNAME

Height above ground (m)

Specify the height of the sensor above the ground surface, i.e., the "Height of Transmitter Assembly above ground". This is used to determine the height of the receiver coils above the ground, which is the sum of "Height of Transmitter Assembly above ground" and "Height of Z Coil above the Transmitter Assembly". For example:

Sensor	Height of Transmitter Assembly above ground (m)	Height of Z Coil above the Transmitter Assembly (m)	Height of the EM receiver coils above the ground surface
TEM2x2	0.2	0	0.2
MetalMapper	0.16	0	0.16
MetalMapper2x2	0.26	0.05	0.31

The height should be between 0 and 2 metres.

Script Parameter: UXANALYZE.FWDMODEL_HEIGHT

Target of Interest

Library database

Use the browse button or the drop-down arrow to select the signature library database.

The library database must have the following channels:

UXA_FIT_B1
UXA_FIT_B2
UXA_FIT_B3
UXA_GATECENTERS

A warning tooltip will be displayed if the pulse length of the library data and the sensor configuration differ by more than 15%.

Script Parameter: UXANALYZE.LIBRARYGDB

Group

Select the database group that contains the TOI library items.

Script Parameter: UXANALYZE.LIBRARYGROUP

Description channel

Select the channel that contains the items' names or descriptions. This channel must contain unique values for each library item.

Script Parameter: UXANALYZE.LIBRARYID

TOI

Select the TOI from the list. The list is populated from the values in the Description channel.

Script Parameter: UXANALYZE.FWDMODEL_TOI

Depth

Enter the TOI depth below the ground surface.

Default value: 0.5m

Script Parameter: UXANALYZE.FWDMODEL_ITEM_DEPTH

Orientation

Pick one of the following options for the orientation, which defines the TOI rotation angles:

Orientation	Azimuth	Inclination
Horizontal in-line [Default]	0	0
Horizontal cross-line	90	0
Vertical	0	90

Script Parameter: UXANALYZE.FWDMODEL_ORIENTATION

Plot - Depth Response Curve

Gate

Select the time gate to plot. The corresponding time will be shown in the contextual field Time of gate (ms).

Default as defined in the sensor configuration table; it will be the gate value for the corresponding <LowGateTime>.

Script Parameter: UXANALYZE.FWDMODEL_GATE

Data to plot

Select what data you want to plot. The option shown depends on the selected sensor (and its coil combinations):

Minimum of the Monostatic Z component data
Sum of all the Monostatic Z component data
Minimum of the Coaxial Z component data
Sum of all the Coaxial Z component data

Script Parameter: UXANALYZE.FWDMODEL_DATA_TO_PLOT

X - Depth (m)

Specify the depth range for the Depth Response Curve plot.

Default minimum and maximum values are 0.0 and 1.0, respectively.

Script Parameters:

UXANALYZE.FWDMODEL_MINDEPTH
UXANALYZE.FWDMODEL_MAXDEPTH

Y - Signal amplitude (mV)

Specify the signal amplitude range for the Depth Response Curve plot.

Default minimum and maximum values are 0.01 and 1000, respectively.

Script Parameters:

UXANALYZE.FWDMODEL_MINSIGAMP
UXANALYZE.FWDMODEL_MAXSIGAMP

Plot - Polarization Curves

X - Time (ms)

Specify the time range for the Polarization plot.

Defaults as defined in the sensor configuration table; they are the minimum and maximum values from the <GateTime>.

Script Parameters:

UXANALYZE.FWDMODEL_MINTIME
UXANALYZE.FWDMODEL_MAXTIME

Y - Polarization (m³/s)

Specify the polarization range for the Polarization plot.

Default minimum and maximum values are 0.005 and 1000, respectively.

Script Parameters:

UXANALYZE.FWDMODEL_MINBETA
UXANALYZE.FWDMODEL_MAXBETA

Created by

Enter your name or initials.

Script Parameter: UXANALYZE.CREATEDBY

Created on

Select the format of the plot creation date, or select "None" to not display the date.

Script Parameter: UXANALYZE.CREATEDON

Output plot prefix

Specify the prefix for the output files. For example, if the prefix is "Test", the output plot will be saved as Test_DepthResponse.png (under .\UXANALYZE_wrk\Depth Response Models), and it will contain:

a title and legend containing all the user input parameters.
a depth response curve (either the minimum or sum), which shows the indicated item depth and signal level.
a polarization plot, which shows each of the three polarizations.

Script Parameter: UXANALYZE.FWDMODEL_MAPPREFIX

Save result to a CSV file

Check this option to save the following information into the Test_DepthResponse.csv file (under .\UXANALYZE_wrk\Depth Response Models):

A listing of user input parameters
The calculated depth response and depth
The three polarizations and time

Script Parameter: UXANALYZE.FWDMODEL_SAVE_CSV

put for each sensor a fixed offset distance (both along line and perpendicular to the line direction)

[More /Less]

Expand to view /modify the sample interval and window size over which the sensor response is calculated.

Data chip size

Specify the window (grid) size over which the sensor response is calculated (see the Application Notes below for further details).

Across line (m)

Specify a value between 0.1 and 20.0 for the grid dimension perpendicular to the line direction.

Default: as defined in the sensor configuration table entry <CartWidth>.

Script Parameter: UXANALYZE.FWDMODEL_ACROSS

Along line (m)

Specify a value between 0.1 and 20.0 for the grid dimension along the line direction.

Default: as defined in the sensor configuration table entry <CartLength>.

Script Parameter: UXANALYZE.FWDMODEL_ALONG

[Calc]

Click on the Calc button to restore the default (cart dimensions) values.

Sample intervals

Specify the cell spacing of the grid (see the Application Notes below for further details).

Horizontal (m)

Specify a horizontal sample interval between 0.01 and 1.0.

Default: 0.05

Script Parameter: UXANALYZE.FWDMODEL_HORIZONTAL

Vertical (m)

Specify a vertical sample interval between 0.01 and 1.0.

Default: 0.01

Script Parameter: UXANALYZE.FWDMODEL_VERTICAL

Application Notes

For a sensor configuration and target of interest (TOI), the depth response curve is calculated for the time gate you select. You can choose to plot the minimum (peak) value or the sum of the responses for either:

Coaxial – Tx-Rx coil pairs that have the same normal vectors; that is, the coils are oriented in the same direction.
Monostatic – Tx-Rx coil pairs that are coaxial (same orientation) and coincident (same location).

The sensor response is calculated over a grid below the sensor. The default size of the area is retrieved from the sensor configuration in the sensor table file (SensorTableAdvanced.xml) from the following entries:

<CartWidth>
<CartLength>

Sensor Table

The sensor configuration parameters are read from the sensor table file "SensorTableAdvanced.xml" located in the "C:\Program Files\Geosoft\Desktop Applications \etc" folder.

To add new sensors or configurations to the table, you can use the Add Sensor Configuration tool. The edited file is then saved in the "%USERPROFILE%\Documents\Geosoft\Desktop Applications \etc" folder.

UX-Analyze Configuration File

The UX-Analyze configuration file "uxa.config" is located in the "C:\Program Files\Geosoft\Desktop Applications \etc" folder, and it contains various default or standard settings for the tools. (It is recommended that you edit this file only if directed by Seequent Support.)

*The GX tool will search in the "gx" folder. The GX.Net tools, however, are embedded in the Geosoft.uxo.gxnet.dll located in the bin folder. If running this GX interactively, bypassing the menu, first change the folder to point to the bin folder, then supply the GX.Net tool in the specified format.