Journal : Acta Geophysica
Article : The IRI model residual difference and the new method of N(h)-profile determination

Authors :
Domański, B.M.
Institute of Geophysics, Polish Academy of Sciences, Warszawa, Poland,,
Gnyp, A.
Carpathian Branch of Subbotin Institute of Geophysics, National Academy of Sciences of Ukraine, Lviv, Ukraine,,
Shanker, D.
Department of Earthquake Engineering, Indian Institute of Technology Roorkee, Roorkee, India,,
Zheng, H.
Geological Science Department, University of Saskatchewan, Saskatoon, Canada,,
Majewska, Z.
AGH University of Science and Technology, Faculty of Geology, Geophysics and Environmental Protection, Kraków, Poland,,
Dooge, J.C.I.
Centre for Water Resources Research, University College, Dublin,,
Fleming, S.W.
Meteorological Service of Canada, Vancouver, Canada,,
Chattopadhyay, S.
Pailan College of Management and Technology, Kolkata, India,,
Kharol, S.K.
Atmospheric Science Section, National Remote Sensing Agency, Department of Space, Government of India, Balanagar, Hyderabad – 500 037, India,,
Cander, L.R.
Rutherford Appleton Laboratory, Chilton, United Kingdom,,
Maltseva, O.A.
Institute of Physics, Rostov State University, Rostov-on-Don, Russia,,
Maltseva, O.A.
Institute of Physics, Rostov State University, Rostov-on-Don, Russia,,
Abstract : The effectiveness of performance of the HF radio communication systems depends in many aspects on the accuracy of description of ionospheric conditions. One of possibilities of such a description is to use the IRI model. In the paper it is shown that discrepancies of the model N(h)-profile shape and the real shape can make a contribution to errors of description of ionospheric conditions by means of the IRI model. A residual difference (RD) remains even after adjusting the IRI model to the real-time parameters of foF2 and hmF2. These differences are esti-mated for the N(h)-profiles calculated from ionograms by the traditional method POLAN and the new method NeXtYZ. Estimates are given for the influence of these differences on the prediction accuracy of such parameters as the maximum usable frequency and the distance D between transmitters and receivers. An attempt was made to decrease the residual difference along the HF path by means of an analytical function approximating RD.

Keywords : ionosphere, N(h)-profile, HF radio propagation,
Publishing house : Instytut Geofizyki PAN
Publication date : 2007
Number : Vol. 55, no. 3
Page : 441 – 458

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Qute : Domański, B.M. ,Gnyp, A. ,Shanker, D. ,Zheng, H. ,Majewska, Z. ,Dooge, J.C.I. ,Fleming, S.W. ,Chattopadhyay, S. ,Kharol, S.K. ,Cander, L.R. ,Maltseva, O.A. ,Maltseva, O.A. ,Maltseva, O.A. , The IRI model residual difference and the new method of N(h)-profile determination. Acta Geophysica Vol. 55, no. 3/2007