Dr.SIVAKRISHNA KONDAVEETI

Papers Published

1.An improved NeQuick-G global ionospheric TEC model with a machine learning approach Sivakrishna, K.Venkata Ratnam, D.Sivavaraprasad, G.GPS SolutionsThis link is disabled., 2023, 27(2), 85,(SCI Indexed)

2.Support Vector Regression model to predict TEC for GNSS signals Sivakrishna, K.Ratnam, D.V.Sivavaraprasad, G.Acta GeophysicaThis link is disabled., 2022, 70(6), pp. 2827–2836.(SCI Indexed)

3.A novel hybrid Machine learning model to forecast ionospheric TEC over Low-latitude GNSS stations Sivavaraprasad, G.Lakshmi Mallika, I.Sivakrishna, K.Venkata Ratnam, D.Advances in Space ResearchThis link is disabled., 2022, 69(3), pp. 1366–1379.(SCI Indexed)

4.A Bidirectional Deep-Learning Algorithm to Forecast Regional Ionospheric TEC Maps Sivakrishna, K.Ratnam, D.V.Sivavaraprasad, G.IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingThis link is disabled., 2022, 15, pp. 4531–4543.(SCI Indexed)

5.Responses of the Indian Equatorial Ionization Anomaly to two CME-induced geomagnetic storms during the peak phase of solar cycle 24 Simi, K.G.Akala, A.O.Siva Krishna, K.Venkata Ratnam, D.Oyedokun, O.J.Advances in Space ResearchThis link is disabled., 2021, 68(8), pp. 3417–3434.(SCI Indexed)

6.Broadcast ionospheric delay correction algorithm using reduced order adjusted spherical harmonics function for single-frequency GNSS receiversAbhigna, M.S.R.Sridhar, M.Harsha, P.B.S.Krishna, K.S.Ratnam, D.V.Acta GeophysicaThis link is disabled., 2021, 69(1), pp. 335–351.(SCI Indexed)

7.Review Onspace based Ionospheric Probes and Payloads for Monitoring Ionospheric WeatherSuneetha, E.Ratnam, D.V.Sivakrishna, K.Proceedings – 2021 3rd International Conference on Advances in Computing, Communication Control and Networking, ICAC3N 2021, 2021, pp. 1844–1850.

8.GPS Positioning Performance Analysis under St. Patrick’s Day 2015 Geomagnetic Storm Conditions,Lakshatha, K.S.Ratnam, D.V.SivaKrishna, K. Proceedings – 2021 3rd International Conference on Advances in Computing, Communication Control and Networking, ICAC3N 2021, 2021, pp. 1265–1270

9.Analysis of differential code biases and inter-system biases for GPS and NavIC satellite constellationsSiva Krishna, K.Venkata Ratnam, D. AIMS Electronics and Electrical EngineeringThis link is disabled., 2021, 5(3), pp. 194–205.(SCI Indexed)

10.Modelling and forecasting of ionospheric TEC irregularities over a low latitude GNSS station,Sivavaraprasad, G.Venkata Ratnam, D.Sridhar, M.Sivakrishna, K. Astrophysics and Space ScienceThis link is disabled., 2020, 365(10), 168.(SCI Indexed)

11.Determination of NavIC differential code biases using GPS and NavIC observations KS Krishna, DV Ratnam Geodesy and Geodynamics 11 (2), 97-105.(SCI Indexed)

12.Performance evaluation of adjusted spherical harmonics ionospheric model over Indian region KS Krishna, DV Ratnam, M Sridhar, PBS Harsha, G Sivavaraprasad IEEE Access 8, 172610-172622.(IEEE,SCI Indexed)

13.Applicability of NeQuick G ionospheric model for single-frequency GNSS users over India KS Lakshatha, DV Ratnam, K Sivakrishna AIMS Geosciences 8 (1), 127-136 WOS, Indexed)

14.”Intend And Functioning Of Handheld Secured Electronic Bank For Sanctuary Purpose.” KS DIVYA, L. (IJITR) INTERNATIONAL JOURNAL OF INNOVATIVE TECHNOLOGY AND RESEARCH Volume.

15.Modelling and forecasting of ionospheric TEC irregularities over a low latitude GNSS station MSKS G. Sivavaraprasad, D. Venkata Ratnam Astrophys Space Sci 365 (168), 1-14.

16.K.Sivakrishna, P. Sai Keerthi, T. D. L. N. Prathyusha, M. Bhanu Prakash Reddy, D.V.Ratnam “Estimation Of Gps Receiver Dcb’sBy Using Gagan Observations”, International Journal Of Scientific & Technology Research Volume 8, Issue 01, January 2020. (Scopus Indexed) .

17.Kumar, M. Ravi, M. Sridhar, J. Lakshmi Prasanna, K. Sivakrishna, and G. Gnana Priya “IONOSPHERIC ANOMALY DETECTION ALGORITHM USING AAD TECHNIQUE” Journal of Critical Reviews 7, no. 13 (2020): 395-401. (Scopus Indexed)

18.V.Venkata Krishna, B.Venkatesh, M. Vara Sai Ram, K. Sivakrishna, D.V.Ratnam “Viability of Identifying The Disturbance of Geomagnetic Field With Smart Phone Technology, International Journal Of Scientific & Technology Research Volume 8, Issue 01, January 2020. (Scopus Indexed) .

19.ean De Dieu Nibigira , D Venkata Ratnam and K.sivakrishna, Performance Analysis of NeQuick-G, IRI-2016, IRI-Plas 2017 and AfriTEC models over African region, “geomagnetism and aeronomy.” (SCI Indexed)

Subjects Taught

MACHINE LEARNING FOR DATASCIENCE

DATA ANALYTICS WITH PYTHON

DEEP LEARNING

DEEP NETWORK ARCHITECURE

INTRODUCTION TO PYTHON

OPTIMIZATION TECHNIQUES FOR MACHINE LEARNING

Books Published