Mathematical modeling of disprersive distortions of the wideband chirp signal during its propogation in the ionospheric radiochannel
Theoretical description of the chirp ionosonde operation has been made. Ionosonde registers spectrum sequence of window received-signal sampling. Mathematical modeling of dispersive distortions of spectra registered has been carried out.
Waveguide Approach to Modeling of the Ionosphere Radiochannel
A rigorous solution of the model problem of the transfer function construction of a stationary HF ionosphere radio channel formed by the receiving-transfer antenna-feeder paths and sphere-layer regular isotropic Earth-ionosphere waveguide is represented. A waveguide representation of electromagnetic field of HF signal was used in the form of a mormal wave series
Tradeoffs and limitations in statistically based image reconstruction problems.
TRADEOFFS AND LIMITATIONS IN STATISTICALLY BASED IMAGE RECONSTRUCTION PROBLEMS