by Srivani, I., Siva Vara Prasad, G., Venkata Ratnam, D.
Published in IEEE geoscience and remote sensing letters (01.08.2019)

by Shafi, Shaik, Venkata Ratnam, D.
Published in Wireless personal communications (01.10.2023)

by Sivavaraprasad, G., Venkata Ratnam, D.
Published in Advances in space research (15.07.2017)

by Sivakrishna, K., Venkata Ratnam, D., Sivavaraprasad, Gampala
Published in GPS solutions (01.04.2023)

by Shafi, Shaik, Venkata Ratnam, D.
Published in Wireless personal communications (01.10.2022)

by Shafi, Shaik, Venkata Ratnam, D.
Published in Wireless personal communications (01.08.2019)

by Emmela, Suneetha, Venkata Ratnam, D, Otsuka, Yuichi, Shinbori, Atsuki, Sori, Takuya, Nishioka, Michi, Perwitasari, Septi
Published in IEEE geoscience and remote sensing letters (01.01.2023)

by Kiruthiga, S., Mythili, S., Mukesh, R., Vijay, M., Venkata Ratnam, D.
Published in Astrophysics and space science (01.08.2021)

by Sivavaraprasad, G., Padmaja, R. Sree, Ratnam, D. Venkata
Published in IEEE geoscience and remote sensing letters (01.03.2017)

by Mallika, I. Lakshmi, Ratnam, D. Venkata, Raman, Saravana, Sivavaraprasad, Gampala
Published in IEEE access (2020)

by Ratnam, D Venkata, Rao, K Nageswara
Published in AIMS electronics and electrical engineering (2021)

by Sivavaraprasad, G., Ratnam, D. Venkata, Otsuka, Yuichi
Published in Journal of navigation (01.05.2019)

by Venkata Ratnam, D., Sarma, A. D.
Published in IEEE transactions on geoscience and remote sensing (01.03.2012)

by Rao, T. Venkateswara, Sridhar, M., Ratnam, D. Venkata
Published in IEEE access (2022)

by Harsha, P. Babu Sree, Ratnam, D. Venkata
Published in IEEE access (2020)

by Shaik, Shafi, Venkata Ratnam, D., Bhandari, B. N.
Published in Wireless personal communications (01.06.2018)

by Dabbakuti, J.R.K. Kumar, Venkata Ratnam, D.
Published in Advances in space research (15.10.2017)

by Vishnu Vardhan, A., Babu Sree Harsha, P., Venkata Ratnam, D., Upadhayaya, A. K.
Published in Astrophysics and space science (01.12.2020)

by Dabbakuti, J.R.K. Kumar, Venkata Ratnam, D.
Published in Advances in space research (15.06.2016)

by Sridhar, K. M., Sridhar, M., Raghunath, Swapna, Venkata Ratnam, D.
Published in Acta geodaetica et geophysica (01.06.2020)