A Wavelet-Based Computation of the Field Received by a LEO Satellite in Radio Occultation

The propagation of an electromagnetic field from the edge of the atmosphere to a satellite in Low Elevation Orbit (LEO) involves the computation of a diffraction integral which evaluation can be computationally demanding when a direct numerical integration is performed. Previous studies have introduced efficient methods to perform this calculation, but these approaches often rely on physical assumptions that may compromise the accuracy of the results. In this paper, we present a novel approach that avoids such assumptions and efficiently computes the field received by the LEO satellite using a wavelet decomposition of the integral.