1. Uma, G., P.S. Brahmanandam, S.T. Ram, K.H. Wu and Y.H. Chu, 2019. A complete solar cycle (2006-2016) studies of scale heights derived using COSMIC radio occultation retrieved electron density profiles. J. Atmos. Solar-Terrestrial Phys., 182: 101-118.
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2. Kumar, V.N., P.S. Brahmanandam, M.P. Rao, G.A. Kumar, K. Samatha and L.R. Dhanasri, 2018. A study of Atmospheric Boundary Layer (ABL) height estimation using various analytical methods-COSMIC RO measured temperature profiles. Indian J. Sci. Technol., 11: 1-12.
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3. Brahmanandam, P.S., V.N. Kumar, M.P. Rao, G.A. Kumar and K. Samatha, 2018. A study of temperature profiles and trends as revealed by COSMIC RO technique and balloon-borne radiosonde instrument. Satellite Oceanogr. Meteorol., 3: 1-12.
4. Babu, A.N., V.N. Kumar, P.S. Brahmanandam, M.P. Rao, M.R. Raman and K. Sreedhar, 2018. Anomalous wind circulation over Taipei, Taiwan during the northern winter seasons of 2004 and 2005-A case study. Satellite Oceanogr. Meteorol., 3: 1-12.
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5. Uma, G., P.S. Brahmanandam, V.K.D. Srinivasu, D.S.V.V.D. Prasad and P.R. Rao, 2017. Daytime VHF amplitude scintillations recorded at an Indian low-latitude station, Waltair (17.7°N, 83.3°E) during 1997-2003. Adv. Space Res., (In Press). 10.1016/j.asr.2017.07.004.
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6. Srinivasu, D., V. Kanaka, P.S. Brahmanandam, G. Uma, D.S.V.V.D. Prasad, P.V.S.R. Rao and S. Mukherjee, 2017. Long-term morphological and power spectral studies of VHF amplitude scintillations recorded over Waltair (17.7°N, 83.3°E), India. Terr. Atmos. Oceanic Sci., 28: 385-394.
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7. Brahmanandam, P.S., G. Uma and T.K. Pant, 2017. Ionosphere VHF scintillations over vaddeswaram (16.31||⁰ N, 80.3⁰ E, Dip 18⁰ N), a latitude Indian station-First time results. J. ASR, 60: 1688-1697.
8. Brahmanandam, P.S., G. Uma and T.K. Pant, 2017. Ionosphere VHF scintillations over Vaddeswaram (geographic latitude 16.31°N, Geographic Longitude 80.30°E, Dip 18°N), a latitude Indian station-A case study. Adv. Space Res., (In Press). 10.1016/j.asr.2017.06.051.
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9. Upadhayaya, A.K., S. Gupta and P.S. Brahmanandam, 2016. F2 region response to geomagnetic disturbances across Indian latitudes: O(1S) dayglow emission. J. Geophys. Res.: Space Phys., 121: 2595-2620.
10. Uma, G., P.S. Brahmanandam and Y.H. Chu, 2016. A long-term study on the deletion criterion of questionable electron density profiles caused by ionospheric irregularities-COSMIC radio occultation technique. Adv. Space Res., 57: 2452-2463.
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11. Mastanaiah, R., P.S. Brahmanandam, G. Uma, A.N. Babu and K.K. Reddy, 2016. Studies of two important stability indices of earth’s atmosphere determined by using the COSMIC GPS radio occultation technique. Indian J. Sci. Technol., 9: 1-9.
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12. Mastanaiah, R., P.S. Brahmanandam, G. Uma, A.N. Babu and K.K. Reddy, 2016. Studies of two important stability indices of earth's atmosphere determined by using the COSMIC GPS radio occultation technique. Indian J. Sci. Technol., 9: 1-9.
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13. Kumar, G.A., N. Babu, P.S. Brahmanandam, G. Uma and K.V. Kumar, 2014. Seasonal and diurnal variations of convective available potential energy (CAPE) measured with COSMIC radio occultation (RO) retrieved data products during 2007-2012-first results. Int. J. Applied Eng. Res., 9: 6239-6256.
14. Brahmanandam, P.S., G. Uma, A. Rajababu, A.B. Tejaswani, Y.H. Chu and A.S. Rao, 2014. Typical comparisons between plasma bubble and blob distributions at different altitudes over the Indian sector using a unique combination of satellite-based observations-a case study. Int. J. Remote Sens., 35: 6173-6189.
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15. Anisetty, S.P.R., P.S. Brahmanandam, G. Uma, A.N. Babu and C.Y. Huang et al., 2014. Planetary-scale wave structures of the earth’s atmosphere revealed from the COSMIC observations. J. Meteorol. Res., 28: 281-295.
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16. Anil, G., P.S. Brahmanandam and G Uma, 2014. Global trends of tropopause observed from COSMIC RO technique during 2007-2012. IJSER., 5: 1318-1328.
17. Madhav, B.T.P., D.U.H. Khan, Y.B. Sankar, M. Kandepi, A.S.N. Reddy and D. Nagajyothi, 2013. CPW fed serrated antenna performance based on substrate permittivity. Int. J. Applied Eng. Res., 8: 1349-1354.
18. Dmitriev, A.V., C.M. Huang, P.S. Brahmanandam, L.C. Chang, K.T. Chen and L.C. Tsai, 2013. Longitudinal variations of positive dayside ionospheric storms related to recurrent geomagnetic storms. J. Geophys. Res.: Space Phys., 118: 6806-6822.
19. Devi, N.S.M.P.L., P.S. Brahmanandam, K.S. Ramesh and G. Uma, 2013. A comparative study on ionospheric parameter (h’F) measured with ionosonde and predicted using IRI-2007 model at Japanese longitudes during low solar activity years. Int. J. Applied Eng. Res., 8: 59-64.
20. Brahmanandam, P.S., Y.H. Chu, C.L. Su and L. Ting-Han, 2013. Daytime E-region irregularities during the 22 July 2009 solar eclipse over Chung-Li (24.9 N, 121.2 E), a moderate mid-latitude station. Terrestrial Atmos. Oceanic Sci., 24: 1021-1032.
21. Brahmanandam, P.S. and G. Uma, 2013. Studies on Ionospheric Irregularities Using Remote Sensing Techniques. LAP Lambert Academic Publishing, Germany, ISBN-13: 978-3-659-46005-0, Pages: 164.
22. Uma, G., P.S. Brahmanandam, Y. Kakinami, A. Dmitriev and N.L. Devi et al., 2012. Ionospheric responses to two large geomagnetic storms over Japanese and Indian longitude sectors. J. Atmos. Solar-Terrestrial Phys., 74: 94-110.
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23. Uma, G., J.Y. Liu, S.P. Chen, Y.Y. Sun, P.S. Brahmanandam and C.H. Lin, 2012. A comparison of the equatorial spread F derived by the international reference ionosphere and the S₄ index observed by FORMOSAT-3/COSMIC during the solar minimum period of 2007-2009. Earth Planets Space, 64: 467-471.
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24. Ratnam, D.V., S. SivaKumar, R. Sneha, N.S. Reddy, P.S. Brahmanandam and S.G. Krishna, 2012. A Study on performance evaluation of Reed-Solomon (RS) codes through an AWGN channel model in a communication system. Int. J. Comput. Sci. Commun., 3: 37-40.
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25. Ratnam, D.V., N. Vanga, P.S. Brahmanadam, B.S.S. Rao and K.S. Kumar, 2012. Auto regressive ionospheric prediction model for GPS applications. Int. J. Comput. Applic., 48: 7-9.
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26. Ratnam, D.V., B.V. Dinesh, B. Tejaswi, D.P. Kumar, T.V. Ritesh, P.S. Brahmanadam and G. Vindhya, 2012. TEC prediction model using neural networks over a low latitude GPS station. Int. J. Soft Comput. Eng., 2: 517-521.
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27. Ranjana, R., P.S. Brahmanandam, R. Yathiraju and T.R. Vishnu, 2012. Adaptive antenna array approach in the processing of weakest GPS signals. J. Emerg. Trends Comput. Inform. Sci., 3: 572-576.
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28. Meduri, S.R. and P.S. Bramhanandam, 2012. Dilution of precision estimationusing single frequency global positioning system receiver. Int. J. Eng. Res. Applic., 2: 2205-2208.
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29. Karthik, P., N.A. Ratnesh, V. Nagireddy, K. Nagamallik and S.G. Krishna et al., 2012. Study of cycle slips and signal to noise ratio in dual frequency GPS receiver. Int. J. Adv. Eng. Technol., 3: 582-590.
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30. Brahmanandam, P.S., G. Uma, J.Y. Liu, Y.H. Chu, N.S.M.P.L. Devi and Y. Kakinami, 2012. Global S4 index variations observed using FORMOSAT‐3/COSMIC GPS RO technique during a solar minimum year. J. Geophys. Res.: Space Phys., Vol. 117. 10.1029/2012JA017966.
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31. Vishnu, T. and P.S. Brahmanandam, 2011. Uniplanar quasi Yagi antenna for channel measurements at X band. JETEIS., 2: 525-528.
32. Revathi, R., P.S. Brahmanandam, T.R. Vishnu and G. Uma, 2011. Possible prediction of earthquakes by utilizing multi precursor parameters in association with ground and satellite-based remote sensing techniques. Int. J. Earth Sci. Eng., 4: 978-981.
33. Ranjana, A., P.S. Brahmanandam and G. Uma, 2011. A perceptual approach for speech enhancement based on MMSE error estimators and masking in an auditory system. JETCI., 2: 525-528.
34. Potula, B.S., Y.H. Chu, G. Uma, H.P. Hsia and K.H. Wu, 2011. A global comparative study on the ionospheric measurements between COSMIC radio occultation technique and IRI model. J. Geophys. Res.: Space Phys., Vol. 116. 10.1029/2010JA015814.
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35. Nagireddy, V., P. Karthik, D.V. Ratnam, P.S. Brahmanadam, B.S.S. Rao, K.S. Kumar and M.R. Kumar, 2011. Autocovariance Ionospheric prediction model for GAGAN applications. Int. J. Soft Comput. Eng., 2: 24-27.
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36. Hemanth, C.H., A.S. Ram, N. Krishna and P. Brahmanandam, 2011. Non linear and non-stationary data analysis using Hilbert-Huang transform. J. Theor. Applied Inform. Technol., 29: 74-84.
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37. Chu, Y.H., P.S. Brahmanandam, C.Y. Wang, C.L. Su and R.M. Kuong, 2011. Coordinated sporadic E layer observations made with Chung-Li 30 MHz radar, ionosonde and FORMOSAT-3/COSMIC satellites. J. Atmos. Solar-Terrestrial Phys., 73: 883-894.
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38. Brahmanandam, P.S., Y.H. Chu, K.H. Wu, H.P. Hsia, C.L. Su and G. Uma, 2011. Vertical and longitudinal electron density structures of equatorial E-and F-regions. Ann. Geophys., 29: 81-89.
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39. Brahmanandam, P.S., Y.H. Chu and J. Liu, 2010. Observations of equatorial Kelvin wave modes in FORMOSAT-3/COSMIC GPS RO temperature profiles. Terr. Atmos. Ocean. Sci., 21: 829-840.
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40. Pan, C.J. and P.S. Brahmanandam, 2009. Range rate variation studies of the low-altitude quasi-periodic radar echoes during SEEK-2 campaign. Indian J. Radio Space Phys., 38: 50-56.
41. Brahmanandam, P.S., C.J. Pan, C.C. Lee and W.C. Tsai, 2009. E-region irregularity observed by the tanegashima frequency agile radar during SEEK-2 campaign. Indian J. Radio Space Phys., 38: 42-49.
42. Niranjan, K., P.S. Brahmanandam and B. Srivani, 2006. Signatures of equatorial midnight temperature maximum as observed from in situ and ground‐based ionospheric measurements in the Indian sector. J. Geophys. Res.: Space Phys., Vol. 111. 10.1029/2005JA011386.
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43. Rao, P.V.S.R., K. Niranjan, D.S.V.V.D. Prasad, P.S. Brahmanandam and S. Gopikrishna, 2005. Features of additional stratification in ionospheric F₂ layer observed for half a solar cycle over Indian low latitudes. J. Geophys. Res.: Space Phys., Vol. 110. 10.1029/2004JA010646.
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44. Niranjan, K., B.M. Rao, P.S. Brahmanandam, B.L. Madhavan, V. Sreekanth and K.K. Moorthy, 2005.. Spatial characteristics of aerosol physical properties over the northeastern parts of peninsular India. Ann. Geophys., 23: 3219-3227.
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45. Moorthy, K.K., S.V. Sunilkumar, P.S. Pillai, K. Parameswaran and P.R. Nair et al., 2005. Wintertime spatial characteristics of boundary layer aerosols over peninsular India. J. Geophys. Res.: Atmos., Vol. 110. 10.1029/2004JD005520.
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46. Prasad, D.S.V.V.D. and P.S. Brahmanandam, 2004. Characteristics of VHF scintillations in the Indian equatorial and low latitude stations. Indian J. Radio Space Phys., 33: 158-169.
47. Niranjan, K., P.S. Brahmanandam, P.R. Rao, G. Uma, D.S.V.V.D. Prasad and P.R. Rao, 2003. Post midnight spread-F occurrence over Waltair (17.7 N, 83.3 E) during low and ascending phases of solar activity. Ann. Geophys., 21: 745-750.
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