Y. S. Rao
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View article: Management of Grapevine Fungal Diseases by Using Antagonistic Endophytes - An Environment-Friendly Approach
Management of Grapevine Fungal Diseases by Using Antagonistic Endophytes - An Environment-Friendly Approach Open
Grapevine (Vitis vinifera L.) is one of the major crops grown commercially throughout the world. In recent years, there have been major losses to grapevine production due to the challenges caused mainly due to fungal diseases like downy mi…
View article: Assessment of Morphological and Physiological Traits Associated with Mustard Aphid Resistance in Brassica Genotypes
Assessment of Morphological and Physiological Traits Associated with Mustard Aphid Resistance in Brassica Genotypes Open
The present study aimed to assess the morphological and physiological traits associated with resistance to mustard aphid in seven Brassica genotypes. Mustard, a vital crop in India's agricultural sector, faces significant challenges from t…
View article: Soil Permittivity Estimation Over Croplands Using Full and Compact Polarimetric SAR Data
Soil Permittivity Estimation Over Croplands Using Full and Compact Polarimetric SAR Data Open
Soil permittivity estimation using Polarimetric Synthetic Aperture Radar (PolSAR) data has been an extensively researched area. Nonetheless, it provides ample scope for further improvements. The vegetation cover over the soil surface leads…
View article: Dual-polarimetric descriptors from Sentinel-1 GRD SAR data for crop growth assessment
Dual-polarimetric descriptors from Sentinel-1 GRD SAR data for crop growth assessment Open
Accurate and high-resolution spatio-temporal information about crop phenology obtained from Synthetic Aperture Radar (SAR) data is an essential component for crop management and yield estimation at a local scale. Crop growth monitoring stu…
View article: PolSAR tools: A QGIS plugin for generating SAR descriptors
PolSAR tools: A QGIS plugin for generating SAR descriptors Open
The demand for processing tools increases with the increasing number of Synthetic Aperture Radar (SAR) satellite missions and datasets.However, to process SAR data, a minimal number of free tools are available (PolSARpro, SNAP) that consol…
View article: A Comparison between Support Vector Machine and Water Cloud Model for Estimating Crop Leaf Area Index
A Comparison between Support Vector Machine and Water Cloud Model for Estimating Crop Leaf Area Index Open
The water cloud model (WCM) can be inverted to estimate leaf area index (LAI) using the intensity of backscatter from synthetic aperture radar (SAR) sensors. Published studies have demonstrated that the WCM can accurately estimate LAI if t…
View article: Narayana-Rao/PolSAR-tools:
Narayana-Rao/PolSAR-tools: Open
A QGIS plugin to generate polarimetric SAR descriptors.
View article: Inundation Mapping of Kerala Flood Event in 2018 using ALOS-2 and Temporal Sentinel-1 SAR Images
Inundation Mapping of Kerala Flood Event in 2018 using ALOS-2 and Temporal Sentinel-1 SAR Images Open
In August 2018, the southern Indian state of Kerala received unusually heavy rainfall leading to largescale flooding and destruction.Reliable flood inundation maps derived from remote sensing techniques help in flood disaster management ac…
View article: Change detection based flood mapping using multi-temporal Earth Observation satellite images: 2018 flood event of Kerala, India
Change detection based flood mapping using multi-temporal Earth Observation satellite images: 2018 flood event of Kerala, India Open
The future projections of climate change envisage a global increase in extreme precipitation events and subsequent flooding. The reliable and rapid flood maps are the critical parameters in preparing the disaster management plans. This stu…
View article: Rapid monitoring of cyclone induced flood through an automated approach using multi–temporal Earth Observation (EO) images in RSS CloudToolbox platform
Rapid monitoring of cyclone induced flood through an automated approach using multi–temporal Earth Observation (EO) images in RSS CloudToolbox platform Open
The new era of cloud platform technologies opens up many opportunities for near real-time dissemination of disaster information to the end-users. The present study utilizes the European Space Agency (ESA) Research and Service Support (RSS)…
View article: A Model-Free Four Component Scattering Power Decomposition for Polarimetric SAR Data
A Model-Free Four Component Scattering Power Decomposition for Polarimetric SAR Data Open
Target decomposition methods of polarimetric Synthetic Aperture Radar (PolSAR) data explain scattering information from a target. In this regard, several conventional model-based methods utilize scattering power components to analyze polar…
View article: Synergistic Use of TanDEM-X and Landsat-8 Data for Crop-Type Classification and Monitoring
Synergistic Use of TanDEM-X and Landsat-8 Data for Crop-Type Classification and Monitoring Open
Classification of crop types using Earth Observation (EO) data is a challenging task. The challenge increases many folds when we have diverse crops within a resolution cell. In this regard, optical and Synthetic Aperture Radar (SAR) data p…
View article: Novel Clustering Schemes for Full and Compact Polarimetric SAR Data: A Case Study for Rice Phenology Characterization
Novel Clustering Schemes for Full and Compact Polarimetric SAR Data: A Case Study for Rice Phenology Characterization Open
Information on rice phenological stages from Synthetic Aperture Radar (SAR)images is of prime interest for in-season monitoring. Often, prior in-situ measurements of phenology are not available. In such situations, unsupervised clustering …
View article: GEE4FLOOD: rapid mapping of flood areas using temporal Sentinel-1 SAR images with Google Earth Engine cloud platform
GEE4FLOOD: rapid mapping of flood areas using temporal Sentinel-1 SAR images with Google Earth Engine cloud platform Open
The present state of the art technologies for flood mapping are typically tested on small geographical regions due to limitation of resources, which hinders the implementation of real-time flood management activities. We proposed a unified…
View article: In-season crop classification using elements of the Kennaugh matrix derived from polarimetric RADARSAT-2 SAR data
In-season crop classification using elements of the Kennaugh matrix derived from polarimetric RADARSAT-2 SAR data Open
Accurate spatio-temporal classification of crops is of prime importance for in-season crop monitoring. Synthetic Aperture Radar (SAR) data provides diverse physical information about crop morphology. In the present work, we propose a day-w…
View article: Sentinel-1 SLC Preprocessing Workflow for Polarimetric Applications: A Generic Practice for Generating Dual-pol Covariance Matrix Elements in SNAP S-1 Toolbox
Sentinel-1 SLC Preprocessing Workflow for Polarimetric Applications: A Generic Practice for Generating Dual-pol Covariance Matrix Elements in SNAP S-1 Toolbox Open
Sentinel-1 SAR data preprocessing is essential for several earth observation applications, including land cover classification, change detection, vegetation monitoring, urban growth, natural hazards, etc. The information can be extracted f…
View article: TIME SERIES ANALYSIS OF SURFACE DEFORMATION OF BENGALURU CITY USING SENTINEL-1 IMAGES
TIME SERIES ANALYSIS OF SURFACE DEFORMATION OF BENGALURU CITY USING SENTINEL-1 IMAGES Open
Persistent Scatterer Interferometry (PSI) is an advanced technique to map ground surface displacements of an area over a period. The technique can measure deformation with a millimeter-level accuracy. It overcomes the limitations of Differ…
View article: SATELLITE BASED DROUGHT ASSESSMENT OVER LATUR, INDIA USING SOIL MOISTURE DERIVED FROM SMOS
SATELLITE BASED DROUGHT ASSESSMENT OVER LATUR, INDIA USING SOIL MOISTURE DERIVED FROM SMOS Open
Climatological variables such as rainfall, temperature have been extensively used by researchers for drought monitoring at a larger spatial region. These variables have a direct influence on the soil moisture which in turn extends the appl…
View article: COMBINED ANALYSIS OF RADARSAT-2 SAR AND SENTINEL-2 OPTICAL DATA FOR IMPROVED MONITORING OF TUBER INITIATION STAGE OF POTATO
COMBINED ANALYSIS OF RADARSAT-2 SAR AND SENTINEL-2 OPTICAL DATA FOR IMPROVED MONITORING OF TUBER INITIATION STAGE OF POTATO Open
Tuber initiation and tuber bulking stages are critical part of various phenological phases for potato production. Tuber initiation covers the period from the formation of spherical rhizome ends, the flowering and the start of tuber bulking…
View article: MAPPING SURFACE FLOW VELOCITIES OF SIACHEN AND GANGOTRI GLACIERS USING TERRASAR-X AND SENTINEL-1A DATA BY INTENSITY TRACKING
MAPPING SURFACE FLOW VELOCITIES OF SIACHEN AND GANGOTRI GLACIERS USING TERRASAR-X AND SENTINEL-1A DATA BY INTENSITY TRACKING Open
Glaciers are melting at an alarming rate due to global warming. Two major glaciers of India viz. Gangotri and the Siachen are chosen for the velocity mapping. The line-of-sight (LOS) velocity fields are derived using X-band TerraSAR-X and …
View article: SASYA: Experimental Field Campaigns at Bardhaman Test Site
SASYA: Experimental Field Campaigns at Bardhaman Test Site Open
Agricultural resources are important dynamic natural resources and a major contributor to Indian economic growth. Accurate crop condition assessment, acreage estimation and on time yield assessment helps in providing a crucial information …