Multi-Objective Optimization of Irrigation Canal Network Using Geospatial Computing: A Case Study of the Kadi Narmada Main Canal, Gujarat Janki Adhvaryu, Parul Patel ISPRS Annals of the Photogrammetry Remote Sensing and Spatial Information Sciences, 2025 This study develops and applies a geospatially driven computational framework to enhance the operational efficiency of irrigation canals, demonstrated through the Kadi branch of the Narmada Main Canal in Gujarat, India. Canal seepage and subsequent waterlogging are major contributors to reduced irrigation efficiency and secondary salinization in command areas. To characterize these processes, multi-temporal Landsat datasets (1990–2024), high-resolution UAV Ortho-mosaics, and ground-based geophysical measurements were analysed to generate long-term vegetation and surface-moisture indices, specifically the Normalized Difference Vegetation Index (NDVI) and the Normalized Difference Water Index (NDWI). A multi-objective optimization model, formulated on the principles of the Non-Dominated Sorting Genetic Algorithm II (NSGA-II), was implemented to identify intervention strategies that minimize seepage losses and waterlogged area while sustaining irrigation deliveries. The analysis revealed recurring moisture persistence and vegetative anomalies adjacent to the canal alignment, confirming progressive seepage patterns. Optimization results indicated that selective lining of high-loss segments combined with targeted sub-surface drainage could achieve approximately 20% reduction in seepage without adversely affecting supply reliability. The study demonstrates how the integration of remote sensing, UAV data, and evolutionary algorithms can support data-driven, cost-effective canal management, contributing to more sustainable and resilient irrigation infrastructure planning in India.
Assessment of EOS-04 (RISAT-1A) data calibration Shweta Sharma, Saurabh Tripathi, B. Sowkhya, Pragya Arora, Shivani Tyagi, et al. Current Science, 2024 Radar imaging SATellite (RISAT-1A), also known as Earth observation satellite-04 (EOS-04), is a follow-on mission of India's first indigenously developed spaceborne C-band synthetic aperture radar (SAR) on-board RISAT-1 satellite.This article provides a description of the post-launch calibration and data quality evaluation of EOS-04 launched on 14 February 2022.Calibration devices (corner reflectors) of different shapes and sizes were deployed at Ahmedabad and Amrapur calibration sites in Gujarat, India from 2 to 24 April 2022, and their response in the EOS-04 data was used to assess the radiometric and polarimetric calibration.The results of the analysis showed satisfactory radiometric and polarimetric data quality.Geolocation accuracy was assessed using the ground-surveyed position of the corner reflectors and was found to be in accordance with the specified values of less than 50 m.
Radiometric calibration stability assessment of Sentinel-1B using point targets at Surat Basin, Australia Sowkhya Badatala, Shweta Sharma, Saurabh Tripathi, Parul R. Patel, Aloke K. Mathur International Journal of Microwave and Wireless Technologies, 2022 The launch of the Sentinel-1B satellite in April 2016 completed the two-satellite synthetic aperture radar (SAR) constellation of the European Copernicus Sentinel-1 mission. The European Space Agency executed the calibration of this sensor during the commissioning phase and an independent calibration by the German Aerospace Center (DLR) in 2016. The calibration parameters must be monitored to assess the stability of the instrument. This study reports the temporal stability assessment of radiometric calibration and image quality parameters of Sentinel-1B SAR data using the corner reflector (CR) array, Surat Basin, Australia. Impulse response functions generated from the CRs in the satellite images were used to derive the image quality parameters. The average radar cross-section difference between estimated and theoretical values (38.40 dB m2) was 0.53 dB m2 for 1.5 m CRs, which is accordant with the absolute radiometric accuracy specified for the Sentinel-1 SAR system. Derived image quality parameters viz. the mean peak-to-side lobe ratio, mean integrated side lobe ratio, and spatial resolutions in the range and azimuth directions were found to be accordant with the specified value for the Sentinel-1 SAR system. The results indicate the excellent quality of the Sentinel-1B data.
Neural network-based approach for estimation of downwelling longwave radiation flux under cloudy-sky conditions Dhwanilnath Gharekhan, Bimal K. Bhattacharya, Devansh Desai, Parul R. Patel Journal of Applied Remote Sensing, 2021 Net surface radiation defines the availability of radiation energy on and near the surface to drive many physical and physiological processes such as latent heat, sensible heat fluxes, and evapotranspiration. One of the prime challenges of modeling radiation budget is estimation of net longwave radiation. Incoming or downwelling longwave radiation (LWin) flux is one of the two key components of net longwave radiation. Its estimation in cloudy conditions has always been a challenge due to lack of instrumentation and regular measurements at different spatial scales. In this study, two artificial neural network (ANN) multi-layer perceptron (MLP) models were developed for LWin flux estimation under cloudy-sky during daytime and nighttime using half-hourly flux measurements over different agro-climatic settings and several atmospheric parameters from measurements, satellite-based observations, and model outputs. A comparative evaluation was made between existing or newly developed multivariate linear regression (MVR) models and ANN-based models. The latter set of models were found to be superior to the best MVR model during both daytime and nighttime. The ANN models were found to have consistent performance across different sites and cloud types except less accuracy in sub-humid or humid climate and in deep convection cloud. The ANN models showed overall accuracies of 2.7% and 3.3% of measured mean and R2 of 0.86 and 0.85 for daytime and nighttime, respectively, when compared with independent data of in-situ measurements.
Accessibility of BRTS station in Ahmedabad city using GIS: A case study Technologies for Sustainable Development Proceedings of the 7th Nirma University International Conference on Engineering Nuicone 2019, 2019
Modelling of daytime incoming longwave radiation under cloudy sky over a semi-arid agro-climatic zone of India Technologies for Sustainable Development Proceedings of the 7th Nirma University International Conference on Engineering Nuicone 2019, 2019
Extraction methods for sar imagery: A review for road features Proceedings 39th Asian Conference on Remote Sensing Remote Sensing Enabling Prosperity Acrs 2018, 2018
Retrieval of crop biophysical-biochemical variables from airborne AVIRIS-NG data using hybrid inversion of PROSAIL-D J Ravi, R Nigam, BK Bhattacharya, D Desai, P Patel Advances in Space Research 73 (2), 1269-1289 , 2024 2024 Citations: 8
Radiometric calibration stability assessment of Sentinel-1B using point targets at Surat Basin, Australia S Badatala, S Sharma, S Tripathi, PR Patel, AK Mathur International Journal of Microwave and Wireless Technologies 14 (10), 1262-1269 , 2022 2022 Citations: 4
Estimating regional-scale daytime net surface radiation in cloudless skies from GEO-LEO satellite observations using data fusion approach D Gharekhan, R Nigam, BK Bhattacharya, D Desai, P Patel Journal of Earth System Science 131 (2), 73 , 2022 2022 Citations: 3
Modelling of downwelling longwave radiation over multiple agro-climate settings of India under foggy sky conditions–A neural network approach D Gharekhan, BK Bhattacharya, D Desai, PR Patel Remote Sensing Applications: Society and Environment 25, 100684 , 2022 2022 Citations: 2
Hyperspectral Data Assimilation and Road Material Extraction A Chandelia, PR Patel, D Gharekhan 2021 IEEE International India Geoscience and Remote Sensing Symposium … , 2021 2021 Citations: 1
Effect of diurnal and angular thermal infrared measurements on field-scale evapotranspiration R Nigam, D Desai, J Ravi, P Patel, BK Bhattacharya 2021 IEEE International India Geoscience and Remote Sensing Symposium … , 2021 2021 Citations: 3
Neural network-based approach for estimation of downwelling longwave radiation flux under cloudy-sky conditions D Gharekhan, BK Bhattacharya, D Desai, PR Patel Journal of Applied Remote Sensing 15 (2), 024515-024515 , 2021 2021 Citations: 6
Modelling of Incoming Longwave Radiation Under Foggy Sky over Multiple Agro-Climate Settings of India D Gharekhan, BK Bhattacharya, R Nigam, D Desai, PR Patel 2020 IEEE Bangalore Humanitarian Technology Conference (B-HTC), 1-6 , 2020 2020 Citations: 1
Technologies for Sustainable Development: Proceedings of the 7th Nirma University International Conference on Engineering (NUiCONE 2019), November 21-22, 2019, Ahmedabad, India A Mahajan, P Patel, P Sharma CRC Press , 2020 2020 Citations: 3
Modelling of daytime incoming longwave radiation under cloudy sky over a semi-arid agro-climatic zone of India D Gharekhan, BK Bhattacharya, R Nigam, D Desai, PR Patel Technologies for Sustainable Development, 79-83 , 2020 2020
Accessibility of BRTS station in Ahmedabad city using GIS: A case study PR Patel, F Electricwala Technologies for Sustainable Development, 95-100 , 2020 2020
Image quality characterization of fine resolution RISAT-1 data using impulse response function G Dadhich, S Sharma, M Rambhia, AK Mathur, PR Patel, A Shukla Geocarto International 34 (6), 586-596 , 2019 2019 Citations: 9
Optimization of Bus Transit Station Using GIS E Fatima, P Patel Journal of Engineering Technology (ISSN. 0747-9964) 8 (1), 314-329 , 2019 2019
Farm level land suitability assessment for wheat and mustard crops using geomatics: a case study of Badipur village in Patan district, Gujarat G Dadhich, PR Patel, MH Kaluberne Technology Drivers: Engine for Growth, 93-98 , 2018 2018 Citations: 1
Technology Drivers: Engine for Growth: Proceedings of the 6th Nirma University International Conference on Engineering (NUICONE 2017), November 23-25, 2017, Ahmedabad, India A Mahajan, BA Modi, P Patel CRC Press , 2018 2018 Citations: 2
Radiometric calibration stability assessment for the RISAT-1 SAR sensor using a deployed point target array at the Desalpar site, Rann of Kutch, India S Sharma, G Dadhich, M Rambhia, AK Mathur, RP Prajapati, PR Patel, ... International Journal of Remote Sensing 38 (23), 7242-7259 , 2017 2017 Citations: 23
Agriculture Land Suitability Evaluation for Wheat Cultivation using Geomatics for Patan District, India G Dadhich, PR Parul, K Manik H. Int. J. Agricultural Resources, Governance and Ecology 13 (1), 91-108 , 2017 2017 Citations: 35
Development of Decision Support System for Land Suitability Evaluations for Crops Using ICT Tools G DADHICH, PR Patel, MH Kalubarme, M Pandya Engineering and Technology in India 8, 65 , 2017 2017 Citations: 4
Development of decision support system for land suitability evaluations for crops using ICTtools PRP DADHICH, GAUTAM 2017
Site Suitability Analysis of Solid Waste Dumping for Jaipur City Using Remote Sensing and GIS R Tah, PR Patel, G Dadhich Multi-discipl. Sustain. Eng. Curr. Futur. Trends, 147-154 , 2016 2016 Citations: 1
MOST CITED SCHOLAR PUBLICATIONS
Soil moisture estimation using gravimetric technique and FDR probe technique: a comparative analysis A Shukla, H Panchal, M Mishra, PR Patel, HS Srivastava, P Patel, ... American International Journal of Research in Formal, Applied & Natural … , 2014 2014 Citations: 127
Agriculture Land Suitability Evaluation for Wheat Cultivation using Geomatics for Patan District, India G Dadhich, PR Parul, K Manik H. Int. J. Agricultural Resources, Governance and Ecology 13 (1), 91-108 , 2017 2017 Citations: 35
Absolute radiometric calibration of FRS-1 and MRS mode of RISAT-1 synthetic aperture radar (SAR) data using corner reflectors MD Mishra, P Patel, HS Srivastava, PR Patel, A Shukla, AK Shukla International Journal of Advanced Engineering Research and Science 1 (6), 78-89 , 2014 2014 Citations: 26
Radiometric calibration stability assessment for the RISAT-1 SAR sensor using a deployed point target array at the Desalpar site, Rann of Kutch, India S Sharma, G Dadhich, M Rambhia, AK Mathur, RP Prajapati, PR Patel, ... International Journal of Remote Sensing 38 (23), 7242-7259 , 2017 2017 Citations: 23
Approach for absolute radiometric calibration of RISAT-1 SAR data using standard target MD Mishra, P Patel, HS Srivastava, A Shukla, PR Patel, AK Shukla Int. J. Remote Sens. Geosci 4 (1), 28-32 , 2015 2015 Citations: 14
Image quality characterization of fine resolution RISAT-1 data using impulse response function G Dadhich, S Sharma, M Rambhia, AK Mathur, PR Patel, A Shukla Geocarto International 34 (6), 586-596 , 2019 2019 Citations: 9
Retrieval of crop biophysical-biochemical variables from airborne AVIRIS-NG data using hybrid inversion of PROSAIL-D J Ravi, R Nigam, BK Bhattacharya, D Desai, P Patel Advances in Space Research 73 (2), 1269-1289 , 2024 2024 Citations: 8
Neural network-based approach for estimation of downwelling longwave radiation flux under cloudy-sky conditions D Gharekhan, BK Bhattacharya, D Desai, PR Patel Journal of Applied Remote Sensing 15 (2), 024515-024515 , 2021 2021 Citations: 6
Preliminary Results of GPS Studies for Monitoring Land Subsidence Over the Shallow Gas Reservoir in India PR Patel, MN Kulkarni Survey Review 40 (310), 356-365 , 2008 2008 Citations: 5
Radiometric calibration stability assessment of Sentinel-1B using point targets at Surat Basin, Australia S Badatala, S Sharma, S Tripathi, PR Patel, AK Mathur International Journal of Microwave and Wireless Technologies 14 (10), 1262-1269 , 2022 2022 Citations: 4
Development of Decision Support System for Land Suitability Evaluations for Crops Using ICT Tools G DADHICH, PR Patel, MH Kalubarme, M Pandya Engineering and Technology in India 8, 65 , 2017 2017 Citations: 4
Estimating regional-scale daytime net surface radiation in cloudless skies from GEO-LEO satellite observations using data fusion approach D Gharekhan, R Nigam, BK Bhattacharya, D Desai, P Patel Journal of Earth System Science 131 (2), 73 , 2022 2022 Citations: 3
Effect of diurnal and angular thermal infrared measurements on field-scale evapotranspiration R Nigam, D Desai, J Ravi, P Patel, BK Bhattacharya 2021 IEEE International India Geoscience and Remote Sensing Symposium … , 2021 2021 Citations: 3
Technologies for Sustainable Development: Proceedings of the 7th Nirma University International Conference on Engineering (NUiCONE 2019), November 21-22, 2019, Ahmedabad, India A Mahajan, P Patel, P Sharma CRC Press , 2020 2020 Citations: 3
Modelling of downwelling longwave radiation over multiple agro-climate settings of India under foggy sky conditions–A neural network approach D Gharekhan, BK Bhattacharya, D Desai, PR Patel Remote Sensing Applications: Society and Environment 25, 100684 , 2022 2022 Citations: 2
Technology Drivers: Engine for Growth: Proceedings of the 6th Nirma University International Conference on Engineering (NUICONE 2017), November 23-25, 2017, Ahmedabad, India A Mahajan, BA Modi, P Patel CRC Press , 2018 2018 Citations: 2
Hyperspectral Data Assimilation and Road Material Extraction A Chandelia, PR Patel, D Gharekhan 2021 IEEE International India Geoscience and Remote Sensing Symposium … , 2021 2021 Citations: 1
Modelling of Incoming Longwave Radiation Under Foggy Sky over Multiple Agro-Climate Settings of India D Gharekhan, BK Bhattacharya, R Nigam, D Desai, PR Patel 2020 IEEE Bangalore Humanitarian Technology Conference (B-HTC), 1-6 , 2020 2020 Citations: 1
Farm level land suitability assessment for wheat and mustard crops using geomatics: a case study of Badipur village in Patan district, Gujarat G Dadhich, PR Patel, MH Kaluberne Technology Drivers: Engine for Growth, 93-98 , 2018 2018 Citations: 1
Site Suitability Analysis of Solid Waste Dumping for Jaipur City Using Remote Sensing and GIS R Tah, PR Patel, G Dadhich Multi-discipl. Sustain. Eng. Curr. Futur. Trends, 147-154 , 2016 2016 Citations: 1
