Intrepid Features


Gridding Operations

The Gridding Operations tool enables you to perform a range of operations on gridded data, such as resampling to change cell size/origin, grid rotation, decimation, detrending, extracting data to line or extracting a multiband to single grid.

Grid Merge

Typically, gridded datasets of a region will vary in quality and resolution from one survey to another due to external limitations such as technology or funding. GridMerge allows the user to prioritise grids of higher quality to overlay lower resolution or lower quality grids. GridMerge will then add grids to a complex merged grid following the application of DC Shift, and surface adjustments.


Create regular grids from point or line datasets using Intrepid Gridding. Our Gridding tool can use a range of methods such as Nearest Neighbour, Bi-Cubic Spline and Trend Spline a to grid scalar data, and a Spherical Linear Interpolation Method (SLERP) to grid tensor data. Our tool supports the creation of grids from any size dataset, or from multiple datasets, only limited by hardware. The final gridded data can be refined further using Laplacian smoothing or Minimum Curvature methods.

3D Explore

3D Explore is a visualisation and editing tool for 2D and 3D datasets such as grids, voxets and meshes (including Tensor Grids). It features the capability to have integrated or linked selections between Map, Plot and Table views. The visualisations support a variety of colour LUTs, Drapes and sun-angles which can be used to highlight important geophysical features in both simple and complex data visualisations.

Data Editing

Direct data editing can be performed in Intrepid using in the SpreadSheet, Flight Path or Profile editor. The SpreadSheet editor can be used to process data which does not conform to standard geophysical workflows. Data within the SpreadSheet editor can be modified manually, with predefined formulas, or by manual formula input. The Flight Path editor and Profile editor allows users to quickly choose to, or not to remove null or erroneous data based upon conditional statements.

Gravity Processing

Intrepid Gravity supports the correction and calculation of gravity anomalies for land, marine and airborne data. The software includes corrections for data reduction and network adjustment, terrain and simple Bouguer as well as an Isostatic correction, based upon the USGS Fortran program Airyroot, which enables the creation of an isostatically corrected Bouguer Gravity grid.


Intrepid Filtering supports spatial and spectral domain filters (and their combination) on line and gridded datasets to enhance geophysical data and features.


Intrepid’s Levelling tools help to correct and remove artefacts such as Aircraft Heading, Diurnal variation, Time synchronisation or Network Adjustments (Often known as Tie-Line Levelling using polynomial or loop closure methods).


Process multi-channel spectra and traditional windowed radiometric spectra with corrections for noise (MNF or NASVD methods), Live/Dead Time, Energy Calibration Drift and Cosmic, Aircraft and Radon background removal.

Specialised Grav-Mag Tools

The Euler Deconvolution tool calculates Euler depth estimates from Magnetic and Gravity field data with a preference towards FTG (Full Tensor Gravity) and magnetic gradient data. The process produces results for the location, depth below sensor, reliability and error estimation of the Euler solutions.