Air and space remote sensing
The remote detection of shallow subsurface anomalies, especially tunnels, caves, buried ditches and buried pipes
Photogrammetry
Multispectral & hyperspectral image analysis
Thermal Imaging
Light Detection and Ranging (LiDAR)
Synthetic Aperture Radar (SAR)
Airborne Gravity
Aeromagnetics
Gravity profiling
Ground Penetrating Radar (GPR)
Resistivity