Comparison of the IPS HF Skywave Propagation Model With Ionospheric Sounding Data

Details Comparison of the IPS HF Skywave Propagation Model With Ionospheric Sounding Data Comparison of the IPS HF Skywave Propagation Model With Ionospheric Sounding Data

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsm21a0350n&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #SM21A-0350

Computer Science

Sound

2400 Ionosphere (6929), 6900 Radio Science

Scientific paper

The availability of radio sounding data through the ionosphere, particularly oblique paths with spaced transmitter and receiver, has allowed testing of the IPS propagation model. The model is at the core of Space Weather prediction systems in the Regional Warning Center (RWC), the Advanced Stand Alone Prediction Service (ASAPS) software used worldwide and the high-frequency (HF) system planning facility used in a consultancy role to determine the coverage and availability of skywave communications for over the horizon (OTH) communication or surveillance networks. The ionospheric sounding using the IPSNET array, particularly an oblique Trans-Tasman path between New Zealand and the east coast of Australia, indicates the usable HF frequency range supported for propagation by the ionosphere. The maximum first-hop oblique frequency may be compared with that produced from real time vertical radio sounding and converted to an oblique equivalent via the propagation model. The relation between the observed and modeled data is examined as a function of Space Weather proxies of ionospheric and solar activity (e.g. the T index), local time and the ionospheric gradient between the transmitter and receiver.

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