Add Synthetic Seed to Static Data

Use the AGC Expert User > Static Data Prep and QC > Add Synthetic Seed to Static Data option (Geosoft.uxo.gxnet.dll(Geosoft.GX.UXO.UxaSyntheticSeedStaticData;Run)*) to add a synthetic response (SMD) calculated by the forward modelling tool as a seed to a static dataset. A new dataset will be created: the Static Seeded Dataset (SSD). You can then run classification of the SSD dataset and correctly identify the synthetic seed items.

Add Synthetic Seed to Static Data dialog options

Survey Data

Database prefix

Select a survey database prefix from the list of available entries: these are the identified prefixes of type SBG (or SAM, SQC, SSD, SXM) for the (Target and Data) databases in your project folder. Use the browse button to locate a different folder that contains your databases.

Script Parameter: UXANALYZE.SSSD_DBSURVEYPREFIX

Group name

Select a group from the target database.

Default: the first group in the selected database.

Script Parameter: UXANALYZE.SSSD_DBSURVEYLINE

Mask

Select a mask channel. In the target database, when this channel is set to 1, the action will be performed on the data entry; if the value is set to 0 or dummy (*), the corresponding data entry will be ignored.

This is an optional field.

Script Parameter: UXANALYZE.SSSD_MASK

Sensor channel suffix

Specify the sensor channel suffix.

Default: NORM (if the channel exists in the database)

Script Parameter: UXANALYZE.SSSD_SUFFIX

Gates (Decay)

Select the Low, High and Decay gate numbers from the list. The low and high gates limit the range of data used when modelling the data. The decay gate along with the low gate are used to determine the decay for an item.

The corresponding times are displayed in the Time gates read-only parameters.

Low	Select the low gate. The default value for low gate is read from the Target database channel: UXA_GateFirstValidTime. Typically, this is around 0.1ms after the current turn off. Script Parameter: UXANALYZE.SSSD_LWGATE
High	Select the high gate. The default value for high gate is the highest gate. Script Parameter:UXANALYZE.SSSD_HIGATE
Decay	Select the decay gate. The default value for decay gate is the gate closest to 2ms after the current turn off. Script Parameter: UXANALYZE.SSSD_DECAY
Time of gates (ms)	This is a read-only parameter that displays the time of gate from the survey database.

Fwd Model / Synthetic Data

Database prefix

Select the forward model database prefix from the list of available entries: these are the identified prefixes of type SMD for the (Data, Target, Source) databases in your project folder. Use the browse button to locate a different folder that contains your databases.

Script Parameter: UXANALYZE.SSSD_DBSYNTHPREFIX

Group name

Select a group from the target database.

Default: the first group in the selected database

Script Parameter: UXANALYZE.SSSD_DBSYNTHLINE

ID channel

Select the ID channel. If the target database has a " UXA_Target_ID" channel, it will be automatically selected.

Script Parameter: UXANALYZE.SSSD_IDCHAN

TOI description channel

Select the channel that contains the description of the TOI. If the target database has a "UXA_Identification" channel, it will be automatically selected. This channel must contain unique values for each response.

Default: UXA_Identification

Script Parameter: UXANALYZE.SSSD_DESCTOICHAN

Selected TOI

Pick the TOI to use (this can be a combination of multiple items). The list is populated from the values in the TOI description channel.

Script Parameter: UXANALYZE.SSSD_SELTOI

Response data channel

Select the channel that contains the TOI response data.

Script Parameter: UXANALYZE.SSSD_DATARES

Output database prefix

Specify the prefix for the output databases. Any identified prefixes of type SSD (Static Seeded Dataset) in your project folder will be listed in the drop-down list.

Default: selected Database prefix entry

Script Parameter: UXANALYZE.SSSD_PREFOUT

Application Notes

A seed item is an Industry Standard Object (ISO), or inert munition buried at a recorded location and depth; it is used as a process quality check for munitions response tasks, including detection surveys, static/cued surveys, and anomaly recovery operations. The types of physical seeds are:

Quality control (QC) seed - The identity, location, and depth of the seed item are blind (not known) to all members of the survey team. Ideally, QC seeds are distributed such that the field teams can be expected to encounter between one and three seeds per day per team.
Validation seed - The identity, location, and depth of the seed item are blind to the contractor. Emplaced by, or on behalf of, the government, they are used to evaluate overall contractor performance on advanced geophysical classification projects.

Synthetic Seeding

Synthetic seeds are a form of quality control seeding, where the forward response of a target of interest is calculated and then added to a dataset. This can be done by an analyst to test a hypnosis or blind (unknown) to test the classification processing. The input data can be either raw or leveled prior to running this tool to synthetically seed a dataset. It is advisable to seed background measurements (i.e. SBG). When seeding other measurement datatypes (i.e., SQC, SAM, etc.), care should be taken to not place the seed at or near the location (X, Y and depth) of real (potentially unknown) sources.

The tool will synthetically seed the data and create a static seeded dataset (with the datatype code of SSD). You can then use this SSD dataset to invert and rank the targets sources for a better understanding of your data and to improve the quality control of the datasets.

Output - The Static Seeded Dataset (SSD)

Upon running the tool, the following SSD databases and channels are created:

SSD_Target – no change from the input target database (i.e. SAM_Target)
SSD_Data – no change from the input data database (i.e. SAM_Data), other than values in the transient data channels will now contain the synthetic responses for those measurements where mask channel was selected (1).
SSD_Seed – a new database containing the details of each of the synthetic seeds, such as description, location, orientation, etc.
Expand to see the list of channels created

After the seeding is complete, the seeded dataset (SSD) can be processed in a similar manner to a SAM dataset, where you:

Level Sensor Data (if the input data was not already leveled),
Run Classify and Rank to invert, perform library matches, and rank the sources, and
Calculate Seed Statistics to determine the performance of the classification process.

*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.