Experimental determination of the electrophysical parameters of a forest canopy with the use of signals of the GLONASS and GPS Global navigation systems

Fourier spectra of amplitude variations of the superposition of signals from navigation satellites near surfaces with different properties

“…Global navigation satellite systems (GNSS) are being actively used to solve various practical and scientific tasks [1]. In particular, continuously emitted signals of navigation satellites (NS) are used to obtain data about the characteristics of earth covers, which allows for contactless monitoring of surface parameters [2][3][4][5][6]. NS signals interact with earth cover surfaces, which results in an interference field formed by superposition of the direct signal and its copies reflected by media boundaries.…”