Introduction and History Electromagnetic Wave Propagation
Velocity Wavelength Attenuation Dispersion
Rocks, Soils and Fluids: Electrical Properties Magnetic Properties
Environmental Influences Heterogeneity, Anisotropy and Scale Radar Equation
Scattering Polarization Fresnel Reflection Snell Angle Stokes-Mueller Matrices Poincare Sphere
Antennas Coupling Near / Far Fields Waveguides
Multipathing
![[Under Construction]](images/undercon.gif){kind=small}
Multipathing is the result of geometry such that propagating waves leave the transmit antenna and travel to the receive antenna by multiple different paths. The difference in the path lengths, velocities and attenuations results in constructive and destructive interference upon arrival at the receiver. This results in complicated changes to the received waveform. An example is a path between a transmitter in one borehole and a receiver in a second borehole through a tunnel combining with one leaking around the tunnel. If the tunnel is air-filled, the path through the tunnel is slightly faster than the path around the tunnel.
(illustration)
(references)
Survey Design Contrast Geometry Resolution Depth of Investigation Orientation
Data Acquisition Data Processing Modeling Interpretation Uncertainty
Applications: Noninvasive Surface Borehole Airborne Satellite and Space