Comparison of measured scattering coefficient of dry soil at X-band with the scattering coefficient estimated using the dielectric constant. - O. P. N. Calla; K. C. Harit; Rajesh Vyas; Dinesh Bohra; Sanjeev Kumar Mishra (IGARSS, 2007)

Study of Himalayas Ice using MSMR Data. - O. P. N. Calla; Sugandha Lohar (IGARSS, 2007)

Comparison of brightness temperature values over Rajasthan using OCEANSAT-1 MSMR. - O. P. N. Calla; Vikas Parihar; Naveen Dutt Joshi; Gitanjali Chakravorty; Usha Rathore (IGARSS, 2007)

Oil spill detection using multi frequency microwave sensor onboard satellite; SSM/I and AMSR-E. - O. P. N. Calla; Harendra Kumar Dadhich; Shruti Singhal (IGARSS, 2013)

Downscaling of SMOS derived soil moisture and validation with ground truth data. - O. P. N. Calla; Abhishek Kalla; Gaurav Rathore; Kishan Lal Gadri; Rahul Sharma; Sunil Kumar Agrahari (IGARSS, 2013)

Study of Variability of Complex Permittivity of Terrestrial Analogue of Lunar Soil (TALS) Having Different Percentage of Water at Microwave Frequencies. - O. P. N. Calla; Shubhra Mathur; Kishan Lal Gadri (IEEE Geosci. Remote. Sens. Lett., 2016)

Quantification of Water Ice in the Hermite-A Crater of the Lunar North Pole. - O. P. N. Calla; Shubhra Mathur; Kishan Lal Gadri (IEEE Geosci. Remote. Sens. Lett., 2016)