URSI GA 2005

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Commission :  GP1

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ON A GLOBAL MODEL FOR foF2 USING NEURAL NETWORKS E.O. Oyeyem, A.W.V. Poole, L. A. McKinnell

Steep Reflectivity Structures of Mesosphere Summer Echoes Detected by Multiple-Receiver Radar Interferometry Jenn-Shyong Chen, Cheng- Hsiung Hsieh, Peter Hoffmann, Marius Zecha

DECODING OF ALTERNATING CODES USING FAST FOURIER TRANSFORMS Ingemar Häggström

CO-ORDINATED RADAR AND OPTICAL OBSERVATIONS OF EQUATORIAL SPREAD F STRUCTURES Sekar R, D. Chakrabarty, R. Narayanan, A.K. Patra

AN INVESTIGATION OF LONG-PERIOD OSCILLATIONS IN BACKSCATTER RANGE AS SEEN BY THE SANAE SUPERDARN RADAR E. Mravlag, A. D. M. Walker

Comparative Studies of the Lower Ionospheres of Earth and Mars S.A. Haider, Varun Sheel, V. Singh

VARIATIONS OF AN ADDITIONAL LAYER IN THE EQUATORIAL IONOSPHERE Nanan Balan, H. Alleyne

EXPERIMENTAL EVIDENCE OF THE SOLITARY INTERNAL GRAVITY WAVE EXISTENCE DURING THE MAJOR MAGNETIC STORM ON OCTOBER 30, 2003, AS DEDUCED FROM DATA OF GLOBAL GPS NETWORK AND GPS RECEIVER ON THE LEO SATELLITE CHAMP E.L. Afraimovich,, S.V. Voeykov,, P.V. Tatarinov

Ionosphere irregularity mathematical models from satellite radio sounding data of heights below F2 maximum Nadia Kotonaeva

Retarded lower trace (RLT) on satellite ionograms - a new method of studying of the ionospheric irregularity. N. P. Danilkin

Modeling of Indian Ionosphere using Planar Fit method with Adaptable Decorrelation Function for GAGAN A.D. Sarma, S.Ghouse Mohideen, D.Krishna Reddy

On the short term forecasting of the ionospheric critical frequency foF2 up to five hours in advance using neural networks. E.O. Oyeyem, A.W.V. Poole, L. A. McKinnell

OPTICAL AND RADIO MEASUREMENTS OF EQUATORIAL PLASMA BUBBLES OVER INDONESIA Otsuka Yuichi, Kazuo Shiokawa, KShoichiro Fukao

Study of the Equatorial and Low latitude Spread-F Occurrence Characteristics and their Possible Predictions in the Indian zone R. S. Dabas, Rupesh M. Das, V. K. Vohra, S. C. Garg, C. V. Devasia, K. S. V. Subbarao, K. Niranjan, P. V. S. Rama Rao

VALIDATION OF ION DENSITY MEASUREMENT USING RPA ONBOARD SROSS-C2 SATELLITE P Subrahmanyam, A. R. Jain, S. C. Garg, P. Chopra, N. K. Sethi, M. Bahl, H. K. Maini, T. John, Vishram Singh, Dhan Singh

Study of plasma depletions and UHF scintillations at the crest of the equatorial ionization anomaly using GPS receiver Nirvikar Dashora, R. Pandey, B. M. Vyas

MODELLING OF IONOSPHERIC ERROR CORRECTION FOR RELATIVE GNSS MEASUREMENTS Mardina Abdullah, Hal J. Strangeways, David M. A. Walsh

STUDY OF THE EQUATORIAL IONIZATION ANOMALY ALONG 75° E MERIDIAN USING GPS TEC R.R. Borah, P.K. Bhuyan

OBLIQUE IONOSPHERIC RADIOSOUNDING MEASUREMENTS OVER SOUTHERN EUROPE AND MEDITERRANEAN AREA: PRELIMINARY RESULTS AND DATA ANALYSIS Petrella marco, B. Zolesi, L. Perrone, V. Romano, Lj. R. Cander, S.S. Kouris

FROM COST271 EACOS (EFFECTS OF THE UPPER ATMOSPHERE ON TERRESTRIAL AND EARTH-SPACE COMMUNICATIONS) TO COST 296 MIERS (MITIGATION OF IONOSPHERIC EFFECTS ON RADIO SYSTEMS) : TWO EUROPEAN UNION PROJECTS ON IONOSPHERIC PHYSICS AND RADIOPROPAGATION Zolesi Bruno, Ljiljana R. Cander

THE MORPHOLOGYC ANALYSIS OF DYNAMIC AND STRUCTURE OF MIDLATITUDE COHERENT ECHOES BY USING THE DATA FROM IRKUTSK INCOHERENT SCATTER RADAR Shpynev Boris, Oleg Berngardt

A DISCUSSION ON GPS ERRORS DUE TO IONOSPHERIC SCINTILLATIONS BASED ON HF MEASUREMENTS Mauro S. Assis, Ângelo A. C. Canavitsas, Giuseppe Amendola

MAGNETIC ACTIVITY LINKED GENERATION OF NIGHTTIME EQUATORIAL SPREAD F IRREGULARITIES B. Engavale, K. Jeeva, K.U. Nair, A. Bhattacharyya

THE IMPACTS OF THE EQUATORIAL PLANETARY WAVES ON THE UPPER IONOSPHERE Oyedemi S. Oyekola, Akinremi Ojo, J. Akinrimisi

NARROW BAND NOISE ATTENUATION FOR FMCW SOUNDING Kolchev Alexey, Andrey Shiriy

THE INFLUENCE OF IONOSPHERE PLASMA HOLES ON HF RADIO WAVE PROPAGATION Cherkashin Yu. N, Egorov I.B, Kolomiitsev O.P, Popov A.V, Ruzhin Yu. Ya, Surotkin V.A.

VHF RADAR OBSERVATIONS ON METEOR INDUCED TURBULENT PLASMA IRREGULARITY LAYERS Raman Selvamurugan, D Narayana Rao

Ionospheric slab thickness over Kokubunji during solar maximum G. Ma

Detection of 2004 Leonid Meteor Shower from Kolkata through its Effects on VLF Transmission S. S. De, B. K. De, A. Guha, P. K. Mandal

The effects of the pre-reversal E×B drift, the EIA asymmetry, and magnetic activity on the equatorial spread F during solar maximum Chien-Chih Lee, Jann-Yenq Liu, Wei-Sheng Chen, Fang-Dar Chu

Studies on VLF propagation in relation to solar and geo-physical events Pinaki Pal, B.K. De

Nighttime Zonal Plasma Drifts and Neutral Winds in the Low Latitude Ionosphere B. G. Fejer, J. Emmert, J. Jensen

OBSERVATION OF GEMINID METEOR SHOWER 2004 USING VLF SFERICS AT 21.5 kHz Soma Banik, Barin Kumar De

COMPARISON OF THE TRUE QUIET ELECTRON DENSITY OF TWO DIFFERENT HIGH LATITUDE SITES G. Egger, M. Friedrich

Planetary-scale perturbations on ionosphere F-region at equatorial and tropical latitude Oyedemi S. Oyekola, J. Akinrimisi, Dora Pancheva

A STUDY OF THE VARIABILITY OF ELECTRON TEMPERATURE AND ELECTRON DENSITY AT ~ 500 KM ALTITUDE OVER INDIAN EQUATORIAL AND LOW LATITUDES A. Borgohain, P. K. Bhuyan

Temporal Kurtosis of Electromagnetic Pulsed Waves Propagating Through the Turbulent Ionosphere Zhensen WU, Zhengwen XU, Jian WU

Electrodynamics of the Evening Equatorial Ionosphere: Model Simulation of Es-layer Influences on the Prereversal Vertical Drift Enhancement Inez S. Batista, A. J. Carrasco, M. A. Abdu, B. W. Renisch

Study of Total Electron Content Variations Which Affect to Satellite Signals of High Accuracy Clock (HAC) Project. Manus Pengnoo, Suthichai Noppanakeepong

A STUDY OF THE SOLAR ECLIPSE EVENTS AND THEIR IMPRINTS IN THE IONOSPHERE OVER AHMEDABAD Sharma Som Kumar, H. S. S. Sinha, H. Chandra

IONOSPHERIC ERROR IN GPS APPLICATIONS Iyiade Adeniyi

DYNAMICS OF LOW LATITUDE IONOSPHERE BY DIGISONDE 256 IN IONOSPHERIC RESEARCH Gomez Enzo, Rios, V.H, B Reinisch

REJUVENATING IONOSPHERIC AND GEOMAGNETIC RESEARCH IN MALAYSIA Mohd. Zain Ahmad Faizal, Mohd. Khair Othman, Sabirin Abdullah, Mohd. Kamal Jaafar

Application of dynamical equilibrium model to topside ionosphere specification Reiko Yoshimura, Takashi Maruyama, Seiji Kawamura

QUASI-PERIODIC OSCILLATIONS IN THE VARIABILITY OF THE HEIGHT OF THE MAXIMUM IONOSPHERIC PLASMA DENSITY AND THE IONOSPHERIC VERTICAL PLASMA DRIFTS NEAR THE EQUATOR Oyedemi S. Oyekola, J. Akinrimisi

GPS OBSERVATION OF TEC AND SCINTILLATION STUDY DURING STORM OF 25- 27 JULY 2004 AT BHOPAL Kalpana Maski, S.K. Vijay, Sudhir Jain, A.K. Gwal

IONOSPHERIC PERTURBATIONS OVER DELHI CAUSED BY THE DECEMBER 26, 2004 SUMATRA EARTHQUAKE H.N. Dutta, R.S. Dabas, Rupesh M. Das, Bhupender Singh

LOW LATITUDE GEOMAGNETIC FIELD AND IONOSPHERIC RESPONSE TO THE INTENSE MAGNETIC STORMS Veenadhari Bhaskara, S. Alex, R.S. Dabas

SEVERE MAGNETIC STORM EFFECTS ON EQUATORIAL AND LOW LATITUDE IONOSPHERE Veenadhari B, S. Alex

Development of Grid Based Model for GAGAN Rajat Acharya, P.D. Yadav, Vipin Chandra Pant, M.R. Sivaraman

SIGNATURE OF VELOCITY VORTEX DURING POST-SUNSET PERIOD AT EQUATORIAL F - REGION AND ITS SEASONAL VARIATIONS S.R.Prabhakaran Nayar, C.V. Sreehari

FOURIER AND WAVELET BASED CHARACTERIZATION OF THE ACOUSTIC-GRAVITY WAVES OBSERVED IN THE ELECTRON CONCENTRATION VARIATION MEASURED THROUGH VERTICAL IONOSPHERIC SOUNDING Šauli P., P. Abry, J. Boška

EFFECT OF IONOSPHERIC SCINTILLATION ON GPS RECEIVER AT EQUATORIAL ANOMALY REGION BHOPAL Smita Dubey, Rashmi Wahi, A.K. Gwal

STUDY OF IONOSPHERIC DELAY DURING STORM PERIOD Wahi Rashmi, Smita Dubey, A.K Gwal

IONOSPHERIC EFFECTS OF HIGH SOLAR AND GEOMAGNETIC ACTIVITY Boška J, Burešová D, Kouba D, Šauli P

SOLAR EUV FLUX DURING SOLAR CYCLES 21, 22 & 23 AND ITS REALTIME PREDICTION FOR AERONOMICAL STUDIES A.K. Dwivedi, K.K. Mahajan

ANALOG AND DIGITAL IONOGRAM SCALING Kouba D, Boška J, Šauli P

IN-SITU F-REGION PLASMA MEASURAEMENTS OVER INDIAN REGION FROM RPA AERONOMY PAYLOAD ONBOARD SROSS-C2 INDIAN SATELITE S.C. Garg, A.R. JaIn, M. Bahl, H.K. Maini, P. Subrahmanyam, P. Chopra, T. John, Vishram Singh, Dhan Singh, U.N. Das

Prediction of maximum amplitude of the next Solar Cycle 24 Using Precursor method P. Chopra, R. S. Dabas

Rocket-borne radio beacon experiment for electron density measurements in the ionosphere M. F. Sarango, R. F. Woodman, J. L. Chau, J. A. Chocos, C. De La Jara, K. Kuyeng, Carlos Minchola

Determining electron Coulomb collision effects on incoherent scatter via the full Foker Plank operator Wesley E. Swartz

Time Histories of Formation, Sustenance and Decay of ES Echoes using HF Doppler Radar C Raghava Reddi, MSSRKN Sarma

The role of different electrodynamical conditions in the E and F regions of the ionosphere for the generation of ESF: A study using radio beacon measurements Smitha V Thampi, Sudha Ravindran, C V Devasia, Tarun K Pant, P Sreelatha, G. Manju, R Sridharan

Studies on the strength and movement of EIA under varying geophysical conditions – Results from CRABEX Smitha V Thampi, Sudha Ravindran, C V Devasia, Tarun K Pant, P Sreelatha, G. Manju, R Sridharan

THE CHANGING IONSOPEHRE: AN UPDATE K.K. Mahajan

Application of Thermospheric Temperature Measurements using Fabry - Perot Interferometry S. D. Sharma

STUDY OF BOTTOMSIDE TOTAL ELECTRON CONTENT AT A LOW LATITUDE STATION DERIVED FROM DIGITAL IONOSONDE MEASUREMENTS N.K. Sethi, R.S. Rabas

A method for automatic sealing of E-sporadic critical frequency from ionograms Carlo Scotto, Michael Pezzopane

Electron density variations during a high solar activity storm at different phases at various altitudes M.K. Goel, S.K. Bhatia, V.K. Pandey

ALTERNATE METEOR AND INCOHERENT SCATTER OBSERVATIONS USING MU RADAR N. Balan, S. Kawamura, T. Nakamura, M. Yamamoto, S. Fukao, H. Alleyne

CLUSTER AND GROUND-BASED OBSERVATIONS OF THE EFFECTS OF STRONG SOLAR WINDS DURING GEOMAGNETIC STORMS N. Balan, H. Alleyne, S. Walker, H. Reme, A. Balogh, N. Cornilleau, S.R. Zhang, T.van Eyken, A.N. Fazakerley, P.M.E. Decreau

GPS imaging of the Earth’s ionosphere at low-, mid- and high-latitudes Cathryn N Mitchell, Robert W Meggs, Ping Yin, Richard Dear, Bettina Zapfe

IONOSPHERIC AND GEOMAGNETIC RESPONSE TO CHANGES IN IMF Subhash C. Kaushik, Hari Mohan Rajput, Sonia Sharma

VHF & L-band scintillation characteristics over an Indian Low latitude Station, Waltair (17.7oN, 83.3oE) PVS Rama Rao, K Niranjan, DSVVD Prasad, S Tulasi Ram, S Gopi Krishna

On the validity of the effective altitude of 350Km used in the conversion of the Slant TEC to Vertical TEC using GPS measurement in the India equatorial and low latitude sectors DSVVD Prasad, PVS Rama Rao, K Niranjan, G Uma, NKM Lakshmi

The solar wind control of ionosphere dynamics during magnetic storms L.Z. Biktash, T. Maruyama, K. Nozaki

The INGV method for the automatic Scaling Frequency foF2 and MUF(3000)F2 from ionograms:a performance comparison with the IPS system Michael Pezzopane, Phil Wilkinson, Carlo Scotto

HIGH SENSITIVE DETECTION OF SOLAR X-RAY FLARES, IONOSPHERIC PLASMA AND NEUTRAL TURBULENCES USING 1.98 MHZ RADAR IN THE INDIAN GEOMAGNETIC EQUATORIAL REGION T. K. Ramkumar, S. Gurubaran, R. Rajaram, D. Narayana Rao

New version of INGV software for automatic scaling of ionograms Carlo Scotto, Michael Pezzopane

POSITIONING OF SMALL-SCALE IRREGULARITIES OF THE AURORAL OVAL WITH HELP OF MID-LATITUDE LFM HF RADAR BISTATIC CONFIGURATION* V.P. Uryadov, G.G. Vertogradov, V.G. Vertogradov, A.A. Ponyatov

FORECASTING OF HF PROPAGATION WITH USE OF ARTIFICIAL NEURAL NETWORKS* N.A. Barkhatov, S.E. Revunov, V.P. Uryadov, G.G. Vertogradov, V.G. Vertogradov

EFFECTS OF DENSITY STRUCTURE ON TRANSIONOSPHERIC HF PROPAGATION H.G. James, P. Prikryl

Modeling of Indian Ionosphere using Planar Fit method with Adaptable Decorrelation Function for GAGAN A.D. Sarma, S. Ghouse Mohideen, D. Krishna Reddy

THE INFLUENCE OF IONOSPHERE PLASMA HOLES ON HF RADIO WAVE PROPAGATION Yu.N. Cherkashin, I.B. Egorov, O.P. Kolomiitsev, A.V. Popov, Yu.Ya. Ruzhin, V.A. Surotkin

Mesospheric Measurements from Dynasonde Ionograms J. W. Wright, N. A. Zabotin, M. T. Rietveld, M. L. V. Pitteway

IONOSPHERIC DISTURBANCE DUE TO TSUNAMIS Kaushika Narendra

Ionospheric Effects on Near Equatorial Space Based Augmentation Systems (SBAS) Partica H. Doherty, C.E. Valladares, S.H. Delay, M. Babu-Dihar

Relations between proton fluxes and D-region electron densities during solar proton events Hangreaves, M.J. Birch

RADIO AMATEURS EFFORTS IN IONOSPHERIC STUDIES Fabio Azzarello, Florio Dalla Vedova

NONLINEAR TIME SERIES ANALYSIS OF THE FLUCTUATIONS OF TOTAL ELECTRON CONTENT OF THE IONOSPHERE G. Renuka, Benny George, C.V. Anilkumar, K. Satheeshkumar, Suja Eapen

A method for automatic scaling of F1 critical frequency from ionograms Carlo Scotto, Michael Pezzopane

SIMULATOR FOR THE TRANSIONOSPHERIC CHANNEL INCLUDING STRONG SCINTILLATIONS Strangeways Hal, N.N. Zernov, V.E. Gherm