Articles Archive

Insights of SAR Raw Data Processing: EOS-4 SAR Data

Ashish Joshi | August 12, 2024 | 747 Views
In optical sensors, the features can be seen in the raw data with some radiometric and geometric distortions but SAR raw data are unfocused images where no feature can be seen in the image. Unlike optical sensors, signal processing algorithms are required to focus the SAR raw data. The processing of SAR raw data is always a challenge because it Continue Reading »

Kenya Crack in 2018: Magma inflation led to continental rifting or huge torrential rainfall led to subsurface cavity formation followed by roof collapse?

R S Chatterjee | August 6, 2024 | 440 Views
In March 2018, a large fissure suddenly appeared across the Nairobi-Narok highway near Mai Mahiu town in the southwestern part of Kenya. The alignment of the fissure closely along the eastern branch of the East African Rift (EAR) system led to a debate regarding its linkage with the rifting process, which is believed to split the African continent slowly. Widening Continue Reading »

A comparison of MODIS and PACE derived chlorophyll product over the northern Arabian Sea

Dr. Sachiko Mohanty | July 30, 2024 | 547 Views
In February 2024, National Aeronautics and Space Administration (NASA) launched the most advanced Earth-observation satellite namely PACE (Plankton, Aerosol, Cloud, ocean Ecosystem), for the better understanding of ocean productivity and the impact of global warming induced climate change. The mission carries a hyperspectral radiometer along with multi-angle polarimeters. The Ocean Color Instrument (OCI) is a hyperspectral imaging radiometer gives the Continue Reading »

Detected Surface Flooding due to Rice Irrigation over Punjab and Haryana, India from passive microwave radiometer

Dr. R.P. Singh | July 22, 2024 | 1322 Views
Introduction of irrigated rice in the semi-arid northwest Indian region is one the major changes in Indian agriculture.  Punjab and Haryana has witnessed significant change in cropping pattern during the last few decades.  Increase in rice area is of particular significance. The State of Punjab occupies a special place in Indian agriculture. Rice- wheat rotation followed in Punjab leaves little Continue Reading »

Fundamental Approach for Quantum Remote Sensing

Ashutosh Kumar Jha | July 15, 2024 | 405 Views
Current sensing technology operates within the electromagnetic spectrum, covering wavelengths ranging from tens of micrometers to meters. However, newer Remote Sensing (RS) instruments utilizing quantum sensing at the Nano to Femto scale are set to unveil internal structures of objects, necessitating a shift towards quantum spectral domain in Remote Sensing. Quantum remote sensing involves theories and methods that observe energy Continue Reading »