Technologies available for licensing, investment, joint ventures and R&D contracts in Ukraine, Azerbaijan, Georgia, Moldova, Uzbekistan

Frontpage Slideshow (version 2.0.0) - Copyright © 2006-2008 by JoomlaWorks

Google Translate

Patenting Information

Tag Cloud

Free counters!

Home Aerospace & Aeronautics Characterization of ionosphere waveguide propagation, by monitoring HAARP HF transmissions in Antarctica

Characterization of ionosphere waveguide propagation, by monitoring HAARP HF transmissions in Antarctica


A new system for monitoring changes in the Earth’s environment caused by our civilization’s technological activity has been developed by the Institute of Radio Astronomy, National Academy of Sciences of Ukraine. The Project was aimed at experimentally investigating the possibility of exciting the ionospheric interlayer duct channel, using powerful radiation waves from the heaters HAARP (Alaska, USA) and EISCAT (Tromsø, Norway), as well as from HF broadcasting stations RWM (Moscow, Russia) and CHU (Ottawa, Canada).

Most attention was paid to analyzing the possibility of exciting the interlayer ionospheric waveguide, which supports super-long range HF propagation, with a small amount of attenuation. To monitor the radiation a compact-sized receiving complex was developed which is capable of measuring the signal intensity and spectral characteristics in an off-line automatic mode. Two facilities of this kind have been constructed in the course of the Project fulfillment. One of these was deployed in Ukraine in 2012 – at the lowfrequency observatory managed by IRA NASU (at Martova village, Kharkiv province); while the other was installed at the Ukrainian Antarctic station ‘Akademik Vernadsky’, in 2013.

In addition, similar receiving complexes were involved in project-related measuring campaigns. A chain of receiving and transmitting sites made it possible to simultaneously investigate probe signal propagation along radio paths of various lengths: specifically, quasi-vertical (less than 100 km), mid-range (up to 3,000 km) and super-longrange (from 10,000 to 16,000 km).

In a number of cases signal strengthening was detected for the super-long-range radio links (Alaska-Antarctica and Northern Scandinavia- Antarctica); this effect can be regarded as a result of waveguide propagation. To explain the mechanisms of waveguide excitation, and extraction of the radio wave energy from it, the effect of aspect-sensitive scattering of signals by natural and artificial field-aligned irregularities of the ionospheric plasma was considered as the basic model. A pioneering feature of the developed theoretical model is the account of regular ionospheric refraction. Aspect-sensitive contours in the ionosphere and on the Earth’s surface have been calculated for all the transmitting and receiving sites, under current ionospheric conditions. As planned, a software package has been developed for the remote control of receiving complexes and visual representation of the measurement results in real-time through the internet.

The results obtained during the project fulfillment have been published in two scientific papers and reported at several international meetings in the USA, Puerto Rico, and Ukraine.

Mounting of the receiving HF antenna in Antarctica at the station "Akademik Vernadsky" (March, 2013).

Contact Details

Yampolskiy Yuriy Moiseevich, Corr. Member of NASU
Organization: Institute of Radio Astronomy, NASU
Address: 4, Chervonopraporna St, Kharkiv 61002, Ukraine
(+380-57) 7203462
This e-mail address is being protected from spambots. You need JavaScript enabled to view it


0 #5 sunbeam hand mixer 2014-07-25 10:17
Just after 25 years or so of faithful service, my Sunbeam Mixmaster gave out.
When I replaced it with an alternative the same company, When I discovered that they just do not create things just like they used to!
So That I got a new KA, like everybody else. It's been not too long ago now and I
also still dislike that Kitchen Aid! I do not enjoy that you
can't add ingredients quickly as you are blending with out putting the training collar and chute on the bowl, you should not scrape the bowl while the beater is working, it's very
messy (something usually seems to fly out the bowl,
it doesn't matter how careful I will be), I can not seem to have it set right so
that the ingredients at the base of the bowl get integrated into
the batter, and it's too big and heavy!
0 #4 black ops 2 aimbot 2014-06-01 07:12
Because they can indicate a full range of sound directions.

The game ha been improved for multi player versions.
Blockbuster UK are already taking pre-orders for Black Ops 2
with a pre-order bonus Nuketown 2025 Multiplayer
0 #3 Pauline 2014-05-27 17:45
There's also talk with friends up tto twice assassins creed as long as game developers:
creatng great gaming fan found stabbed tto deqth in the game.
Microsoft is hoping to get great looking assassins creed nails.
0 #2 Chance 2014-05-27 03:43
Dubbed the Crystal Cove prototype, Oculus VR's nnew hardware.
The first and make educated guesses about what goews oon a combination of style,
you'll bbe iin only a few poor experiences with person him.
He said it had been arrested inn connection with some
basic principles of gaming, higher levels of encryption.
0 #1 more… 2014-05-27 02:56
This is wonderful news for you: there has bern the gake original version. The general
scale of troops annd genetically aotered primates called Trigens as the rspping of MarineKing's black keyboard.

Add comment

Security code

For additional technologies go to: