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Estimation of Vertical Ionosphere From The Oblique Sounding Measurement Using HF Radar System

Authors:
Jin-Ho Jo
Moon-Hee You
Yong-Min Lee
Cheol-Oh Jeong

Keywords: Ionogram; Ionosonde; Vertical sounding; Oblique sounding; Trace extraction; Ionobgram conversion; Vector tracking

Abstract:
Many of radio wave applications require real-time determination of the 2-dimensional structure of the ionospheric electron density along the path, or at least of the mid-path electron density profile. Since it is often impractical to deploy a vertical ionosonde at the point of interest, such as across oceans, the idea of reconstructing an average mid-path profile from oblique incidence measurements is very appealing. In this paper, we present methods for estimate vertical ionosphere profile without vertical ionospheric measurement. This can be achieved by ionogram conversion from the oblique to equivalent vertical at the midpoint between the measurement stations. To get vertical ionogram from the measured oblique ionogram, two steps processing are necessary. The first step is a trace extraction from the ionogram and vector tracking algorithm is used in this phase. Second step is an ionogram conversion from the oblique to equivalent vertical. In order to verify ionogram conversion algorithm, converted vertical ionograms are compared with the measured ionograms. The comparison results show that ionogram conversion methods can be used for the midpoint vertical ionogram estimation without vertical ionospheric measurements.

Pages: 5 to 9

Copyright: Copyright (c) IARIA, 2014

Publication date: February 23, 2014

Published in: conference

ISSN: 2308-4480

ISBN: 978-1-61208-317-9

Location: Nice, France

Dates: from February 23, 2014 to February 27, 2014