All Stories

  1. Kriging-based ionospheric TEC, ROTI and amplitude scintillation index (S 4) maps for India

    Article • IET Radar Sonar & Navigation, August 2020, the Institution of Engineering and Technology (the IET)

    Professor Venkata Ratnam Devanaboyina

  2. Improvement of Indian-Regional Klobuchar Ionospheric Model Parameters for Single-Frequency GNSS Users

    Article • IEEE Geoscience and Remote Sensing Letters, January 2018, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Venkata Ratnam Devanaboyina, Dr. J R K KUMAR DABBAKUTI

  3. Linear time series modeling of GPS-derived TEC observations over the Indo-Thailand region

    Article • Journal of Geodesy, December 2017, Springer Science + Business Media

    Professor Venkata Ratnam Devanaboyina, Dr. J R K KUMAR DABBAKUTI

  4. Modeling of Ionospheric Time Delays Based on a Multishell Spherical Harmonics Function Approach

    Article • IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, December 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Venkata Ratnam Devanaboyina, Dr. J R K KUMAR DABBAKUTI

  5. Modeling and analysis of GPS-TEC low latitude climatology during the 24th solar cycle using empirical orthogonal functions

    Article • Advances in Space Research, October 2017, Elsevier

    Professor Venkata Ratnam Devanaboyina, Dr. J R K KUMAR DABBAKUTI

  6. Performance evaluation of linear time-series ionospheric Total Electron Content model over low latitude Indian GPS stations

    Article • Advances in Space Research, October 2017, Elsevier

    Professor Venkata Ratnam Devanaboyina, Dr. J R K KUMAR DABBAKUTI

  7. Ionospheric forecasting model using fuzzy logic-based gradient descent method

    Article • Geodesy and Geodynamics, September 2017, Elsevier

    Professor Venkata Ratnam Devanaboyina, Dr. J R K KUMAR DABBAKUTI

  8. Ionospheric scintillation forecasting model based on NN-PSO technique

    Article • Astrophysics and Space Science, August 2017, Springer Science + Business Media

    Professor Venkata Ratnam Devanaboyina

  9. Detection of ionospheric scintillation effects using LMD–DFA

    Article • Acta Geophysica, July 2017, Springer Science + Business Media

    Professor Venkata Ratnam Devanaboyina

  10. Maximum–Minimum Eigen Detector for Ionospheric Irregularities Over Low-Latitude Region

    Article • IEEE Geoscience and Remote Sensing Letters, June 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Venkata Ratnam Devanaboyina

  11. Pathloss Study for 61 GHZ Wave D2D Communications in Indoor Environment

    Article • Wireless Personal Communications, May 2017, Springer Science + Business Media

    Professor Venkata Ratnam Devanaboyina

  12. Short-term Forecasting of Ionospheric Total Electron Content over a Low-latitude Global Navigation Satellite System Station

    Article • IET Radar Sonar & Navigation, April 2017, the Institution of Engineering and Technology (the IET)

    Mr Sivavaraprasad G, Professor Venkata Ratnam Devanaboyina

  13. Mitigation of Ionospheric Scintillation Effects on GNSS Signals Using Variational Mode Decomposition

    Article • IEEE Geoscience and Remote Sensing Letters, March 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Mr Sivavaraprasad G, Professor Venkata Ratnam Devanaboyina

  14. Application of SST to forecast ionospheric delays using GPS observations

    Article • IET Radar Sonar & Navigation, February 2017, the Institution of Engineering and Technology (the IET)

    Mr Sivavaraprasad G, Professor Venkata Ratnam Devanaboyina

  15. Performance evaluation of ionospheric time delay forecasting models using GPS observations at a low-latitude station

    Article • Advances in Space Research, January 2017, Elsevier

    Mr Sivavaraprasad G, Professor Venkata Ratnam Devanaboyina

  16. Detection of ionospheric anomalies during intense space weather over a low-latitude GNSS station

    Article • Acta Geodaetica et Geophysica, December 2016, Springer Science + Business Media

    Mr Sivavaraprasad G, Professor Venkata Ratnam Devanaboyina

  17. Implementation of Advanced Carrier Tracking Algorithm Using Adaptive-Extended Kalman Filter for GNSS Receivers

    Article • IEEE Geoscience and Remote Sensing Letters, September 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Venkata Ratnam Devanaboyina

  18. Analysis of ionosphere variability over low-latitude GNSS stations during 24th solar maximum period

    Article • Advances in Space Research, September 2016, Elsevier

    Mr Sivavaraprasad G, Professor Venkata Ratnam Devanaboyina

  19. Ionospheric Spatial Gradient Detector Based on GLRT Using GNSS Observations

    Article • IEEE Geoscience and Remote Sensing Letters, June 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Venkata Ratnam Devanaboyina

  20. Analysis of local ionospheric variability based on SVD and MDS at low-latitude GNSS stations

    Article • Earth Planets and Space, June 2016, Springer Science + Business Media

    Professor Venkata Ratnam Devanaboyina, Dr. J R K KUMAR DABBAKUTI

  21. Characterization of ionospheric variability in TEC using EOF and wavelets over low-latitude GNSS stations

    Article • Advances in Space Research, June 2016, Elsevier

    Professor Venkata Ratnam Devanaboyina, Dr. J R K KUMAR DABBAKUTI

  22. An improved cross layer cooperative routing for vehicular networks

    Article • May 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Venkata Ratnam Devanaboyina

  23. Modelling of ionospheric time delays based on adjusted spherical harmonic analysis

    Article • Aviation, January 2016, Vilnius Gediminas Technical University

    Professor Venkata Ratnam Devanaboyina, Dr. J R K KUMAR DABBAKUTI

  24. Mitigation of ionospheric scintillations for GPS signals under geomagnetic storm conditions using LMS adaptive filter

    Article • International Journal of Information and Communication Technology, January 2016, Inderscience Publishers

    Professor Venkata Ratnam Devanaboyina

  25. Spectrum Sensing for Cognitive Radio using Hilbert- Huang Transform Average Ratio Detector

    Article • Indian Journal of Science and Technology, December 2015, Indian Society for Education and Environment

    Professor Venkata Ratnam Devanaboyina

  26. Detection of Low-Latitude Ionospheric Irregularities From GNSS Observations

    Article • IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, November 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Venkata Ratnam Devanaboyina

  27. Complementary Phase Power Divider Feed for Dipole Antenna Specific to GSM 900 Base Station Applications

    Article • September 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Venkata Ratnam Devanaboyina

  28. Automatic ionospheric scintillation detector for global navigation satellite system receivers

    Article • IET Radar Sonar & Navigation, July 2015, the Institution of Engineering and Technology (the IET)

    Professor Venkata Ratnam Devanaboyina, Mr Sivavaraprasad G

  29. Detection of ionospheric anomalies based on FFT Averaging Ratio (FAR) algorithm

    Article • March 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Venkata Ratnam Devanaboyina

  30. Characterization of low latitude ionospheric scintillations using EEMD - DFA method

    Article • March 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Venkata Ratnam Devanaboyina

  31. Faster Acquisition Technique for Software-defined GPS Receivers

    Article • Defence Science Journal, February 2015, Defence Scientific Information and Documentation Centre

    Professor Venkata Ratnam Devanaboyina

  32. Ionospheric gradient detection methods for ground based augmentation system

    Article • February 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Venkata Ratnam Devanaboyina

  33. Forecasting of ionospheric time delays using ARMA model under Geomagnetic storm conditions

    Article • February 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Venkata Ratnam Devanaboyina

  34. Spectral analysis of ionospheric phase scintillations using Hilbert — Huang transform at a low-latitude GNSS station

    Article • January 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Venkata Ratnam Devanaboyina

  35. Enhancing the performance of AOA estimation in wireless communication using the MUSIC algorithm

    Article • January 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Venkata Ratnam Devanaboyina

  36. Analysis of path loss models of 4G femtocells

    Article • September 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Venkata Ratnam Devanaboyina

  37. Implementation of ionospheric prediction algorithm based on huang hilbert transform

    Article • July 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Venkata Ratnam Devanaboyina

  38. Ionospheric scintillation monitoring at a low latitude Indian station during geo-magnetic storm

    Article • February 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Venkata Ratnam Devanaboyina

  39. Faster GPS/IRNSS acquisition via sub sampled fast Fourier transform (ssFFT) and thresholding

    Article • December 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Venkata Ratnam Devanaboyina

  40. Acquisition of GPS L1 signals using Cooley-tukey FFT algorithm

    Article • September 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Venkata Ratnam Devanaboyina

  41. Estimation and analysis of user IPP delays using bilinear model for satellite-based augmented navigation systems

    Article • Aviation, June 2013, Vilnius Gediminas Technical University

    Professor Venkata Ratnam Devanaboyina

  42. Modeling of Low-Latitude Ionosphere Using GPS Data With SHF Model

    Article • IEEE Transactions on Geoscience and Remote Sensing, March 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Venkata Ratnam Devanaboyina

  43. Performance evaluation of selected ionospheric delay models during geomagnetic storm conditions in low-latitude region

    Article • Radio Science, June 2011, American Geophysical Union (AGU)

    Professor Venkata Ratnam Devanaboyina

  44. Modelling of low-latitude ionosphere using modified planar fit method for GAGAN

    Article • IET Radar Sonar & Navigation, January 2009, the Institution of Engineering and Technology (the IET)

    Professor Venkata Ratnam Devanaboyina

  45. Coherent Radio Beacon Experiment (CRABEX) for tomographic imaging of the equatorial ionosphere in the Indian longitudes – Preliminary results

    Article • Advances in Space Research, January 2007, Elsevier

    Professor Venkata Ratnam Devanaboyina