Description:

Processing of raw navigation data for streamer surveys from UKOOA P2 raw data format to UKOOA P1/90 or SPS final data format.

Modules:

Input:

Builds a proprietary database of network and observations from raw data.
Performs automated format checking and data integrity checks.

Precondition:

Auto-precondition and interactive time series.
Despiking, editing, filtering, interpolation/extrapolation and de-skew to shot event.
Dynamically displays detailed statistical data for each observation.
Combines with network display to show effect on network of rejected/missing data.
Display rate of change plots, delta, polynomial delta, comparison plots.



FGPS - SeisPos: Precondition
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Database:

Provides interactive database of all header and event data.
Supports data editing.
Supports export of data in Microsoft Excel compatible format (csv).

Network Adjustment:

Multi-vessel, multi-streamer.
Fully integrated weighted least squares solution.
Dynamic graphics.
Allows multiple network/sub-network configurations.
User configurable Delft method statistical testing and automatic rejection/weighting.
Least squares solution for streamer rotations and stretch.
Staged configurable output of all positioning and QC data.
Produces full QC statistics.



FGPS - SeisPos: Network Adjustment
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Output:

Outputs user configurable positioning data in industry standard UKOOA P1/90 format and Shell Processing Support (SPS) format.
Header from file or internally generated.

QC:

Interactive time series plots of all adjustment QC data:
Adjustment unit variance, redundancy and number of iterations.
Observation value, residual, normalised residual, MDE and SD.
Node position, error ellipse and external reliability.
Streamer rotation, stretch and feather.
Shot distance, time interval, vessel speed and CMG.

General:

Comprehensive and detailed logging of all processes.
Warning and error log.
Trend analysis.
Reporting.
Multi-project support.
Multi-threaded environment.
Customisable plot configuration and printing.

Description:

Provides comprehensive QC of final navigation data in UKOOA P1/90 format for streamer surveys.

Modules:

QC Offsets:

Allows user specified configuration to compare any node positions.
Export results in Microsoft Excel compatible format.
Interactive time series plots of radial, inline and crossline components of node ranges.
Performs dataset integrity checks, providing details of exceptions.
Performs UKOOA format compliance checking.

QC Nodes:

Allows user specified configuration of selected records.
Export results in Microsoft Excel compatible format.
Interactive time series plots of radial, inline and crossline components of shot-to-shot node movement, water depth and streamer depths.

Compare:

Compares two P1/90 datasets. Allows user-specified configuration of selected records for comparison.
Export results in Microsoft Excel compatible format.
Interactive time series plots of radial, inline and crossline components of node differences.

Trend Analysis and Statistical Testing:

Enables user defined configuration of time series plots of all line-by-line data as configured in the QC Offsets, QC Nodes and Compare modules.
Enables user defined configuration of statistical tests based on the above data, producing reports to flag failures.

Extract:

Exports data from P1/90 in Microsoft Excel compatible format.
User specifiable record and record attribute configuration of data to export.
P1/90 decimation.
Specifiable SP inclusive or exclusive range and interval.

Replay:

Interactive graphical replay of P1/90.
Supports on screen measurements.
Displays vessel, active source, receiver groups, tailbuoys.
Displays grid, survey line and waypoints.



FGPS - P1Tools: Replay
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Streamer Shape:

User defined configuration: select streamers, shots, labels.
Optionally rotate streamers for clarity.
Zooming and scaling functions.



FGPS - P1Tools: Streamer Shape
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Coordinate Conversions:

Currently supports 7 parameter datum transformations.
Currently supports TM, RSO and NZMG projections.
Multiple files.
Parameters from P1/90 header
From and To parameters can be edited.

Preplot:

3D.
2D.
P1/90.
SPS.
Interactive design.

DXF:

Convert P1/90 to DXF file.
Any record type(s) can be selected.
Fully customisable.

Depth Corrections:

Tidal reductions/corrections.
Depth replacement.
Tidal datum corrections.

Line Intersection Computation:

P1/90.
SPS.
Text and Omega formatted output.

Concatenation:

P1/90.
Definable SP range.

Description:

Shell Processing Support format (SPS) data QC and receiver coordinate computation.

Functions:

Record integrity checking.
Mapping of source and receiver positions by type and index.
Interactive mapping of active spread.
Replay acquisition.
Mapping of source and receiver attributes (static correction, point depth, seismic datum, uphole time, water depth and surface elevation).
File comparisons, mapped and time series.
Time series plots of source and receiver lines for all point attributes.
Interactive output of source and receiver data to csv file.
Data management.
Receiver coordinate computation using acoustics or first breaks.



FGPS - SPSPro: Section of a swath of data from an OBC survey
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FGPS - SPSPro: Receiver coordinate computation using first breaks
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Description:

Geodetic and survey utilities package based on the European Petroleum Survey Group (EPSG) database.

Functions:

Geographical <> Cartesian coordinate transformations.
Geographical <> Grid coordinate transformations.
Cartesian <> Grid coordinate transformations.
Batch coordinate conversions.
Grid convergence and scale.
Geodetic forward.
Geodetic reverse.