Limitations of Forward Approximation

“The Theory of Scintillation with Applications in Remote Sensing” was published in 2011. The underlying phenomenon is electromagnetic (EM) wave propagation in transparent media, specifically the earth’s ionosphere and atmosphere. EM waves are vector fields governed by Maxwell’s equations. Linear constitutive relations characterize the EM field interactions with propagation media. Scintillation refers to irregular variations imparted to signal parameters that have traversed structured regions.
The physical processes that cause structure development comprise an engaging theory in its own right. Propagation theory connects parameterized remote diagnostic observables with complementary parameterized measures of the in situ structure. Parameters can be estimated with established procedures that reconcile diagnostic measurements with the theoretical predictions.
In the decade that has passed since the book was published more refined interpretations have revealed limitations and new applications of the theory.    “The Theory of Scintillation Revisited” reviews the development of the forward propagation equation (FPE) and its limitations.