Computer filtering of images of ionograms of HF ionospheric radio communication paths and an algorithm for determining signal-to-noise ratio

Vladimir Ivanov,Andrei Chernov,Natalya Ryabova,Alexey Elsukov,Dmitriy Ivanov,Mariia Ryabova

doi:10.5937/jaes16-11790

Abstract

Computer filtering of images of ionograms of HF ionospheric radio communication paths and an algorithm for determining signal-to-noise ratio

Highlights

Computer image processing methods have been widely used in various fields
It is crucial to extract data on the parameters of multi-dimensional HF ionospheric radio communication channels from the ionogram images obtained by ionospheric sounding [01-03]
These images are contaminated with noise and radio frequency interferences (RFI) stem from other users

Summary

Original Scientific Paper

COMPUTER FILTERING OF IMAGES OF IONOGRAMS OF HF IONOSPHERIC RADIO COMMUNICATION PATHS. Vladimir Ivanov* Dmitriy Ivanov Natalya Ryabova Mariia Ryabova* Andrei Chernov Alexey Elsukov 1Volga State University of Technology, Yoshkar-Ola, Russia. The algorithm of obtaining ionograms of oblique sounding of wideband radio channels was implemented in software. The paper presents an algorithm of computer filtering of ionograms with the use of median equalization. The algorithm of determining signal-to-noise ratio in HF ionospheric radio channel was developed and implemented in software

INTRODUCTION

Let us consider a module of spectrum of function

COMPUTER FILTERING OF IONOGRAM IMAGE WITH THE USE OF MEDIAN EQUALIZATION

CONCLUSIONS