Listed in reverse-chronological order.
Ben Gorr, Alan Aguilar Jaramillo, Huilin Gao, Daniel Selva, Ankur Mehta, Yizhou Sun, Vinay Ravindra, Cédric H. David, and George H. Allen. “Decentralized Satellite Constellation Replanning for Event Observation." Journal of Spacecraft and Rockets (Jan 2025): 1-19.
Ben Gorr, Vinay Ravindra, Amer Melebari, Alan Aguilar Jaramillo, Sreeja Nag, Mahta Moghaddam, and Daniel Selva. “Multi-Objective Optimization of an Intelligent Soil-Moisture-Monitoring Satellite Constellation." Journal of Spacecraft and Rockets 60, no. 4 (July 2023): 1284-1296.
R. Ketzner, V. Ravindra and M. Bramble, “A Robust, Fast, and Accurate Algorithm for Point in Spherical Polygon Classification with Applications in Geoscience and Remote Sensing”, Computers & Geosciences, Volume 167, 2022.
R. Lammers, A.S. Li, S. Nag, V. Ravindra, “Prediction Models for Urban Flood Evolution for Satellite Remote Sensing”, Journal of Hydrology (Elsevier), 2021.
V. Ravindra, S. Nag and A. Li, “Ensemble-Guided Tropical Cyclone Track Forecasting for Optimal Satellite Remote Sensing”, in IEEE Transactions on Geoscience and Remote Sensing, vol. 59, no. 5, pp. 3607-3622, May 2021.
V. Ravindra and S. Nag, “Fast Methods of Coverage Evaluation for Tradespace Analysis of Constellations”, in IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, vol. 13, pp. 89-101, 2020,
B. Pyne, R. Naruse, H. Saito, J. Hirokawa, V. Ravindra and P. R. Akbar, “Robust Contactless Noncircular Choke Flange for Wideband Waveguide Applications”, in IEEE Transactions on Microwave Theory and Techniques, vol. 67, no. 3, pp. 861-867, March 2019.
B. Pyne, P. R. Akbar, V. Ravindra, H. Saito, J. Hirokawa and T. Fukami, “Slot-Array Antenna Feeder Network for Space-Borne$X$-Band Synthetic Aperture Radar”, in IEEE Transactions on Antennas and Propagation, vol. 66, no. 7, pp. 3463-3474, July 2018.
V. Ravindra, H. Saito, J. Hirokawa, M. Zhang, A. Tomiki, “A TM010 Cavity Power-Combiner with Microstrip Line Inputs”, IEICE Transaction on Electronics , Vol.E100-C, No.12, pp.1087-1096, Dec 2017.
H. Saito, P. Akbar, H. Watanabe, V. Ravindra, J. Hirokawa, K. Ura and P. Budhaditya, “Compact X-band Synthetic Aperture Radar for 100kg Class Satellite”, in IEICE Transactions on Communications, Vol.E100-B, No.9, Sep. 2017.
V. Ravindra, P. R. Akbar, M. Zhang, J. Hirokawa, H. Saito and A. Oyama, “A Dual-Polarization X-Band Traveling-Wave Antenna Panel for Small-Satellite Synthetic Aperture Radar”, in IEEE Transactions on Antennas and Propagation, vol. 65, no. 5, pp. 2144-2156, May 2017.
Richard Levinson, Vinay Ravindra, Jeremy Frank, and Meghan Saephan, “Time-dependent Orienteering for High Altitude UAVs to Monitor Greenhouse Gases: Mixed Integer Programming vs. Monte Carlo Tree Search", accepted at 22nd International Conference on the Integration of Constraint Programming, Artificial Intelligence, and Operations Research (CPAIOR), Mebourne, Australia, Nov 2025.
Sreeja Roy-Singh, Vinay Ravindra, Richard Levinson, Mahta Moghaddam, Jan Mandel, Adam Kochanski, Angel Farguell Caus et al. “Optimal Planning and Machine Learning for Responsive Tracking and Enhanced Forecasting of Wildfires using a Spacecraft Constellation." arXiv preprint arXiv:2508.06687 (2025).
Richard Levinson, Vinay Ravindra and Sreeja Nag. “Optimal Planning to Coordinate Science Data Collection and Downlink for a Constellation of Agile Satellites with Limited Storage." accepted in the 34th International Joint Conference on Artificial Intelligence (IJCAI-25), Montreal, Canada, 2025.
Sreeja Roy-Singh, Vinay Ravindra, Richard Levinson, Mahta Moghaddam, Jan Mandel, Adam Kochanski, Angel Farguell Caus, Kurtis Nelson, Samira Alkaee Taleghan, Archana Kannan, Amer Melebari, “Optimal Planning and Machine Learning for Responsive Tracking and Enhanced Forecasting of Wildfires using a Spacecraft Constellation" accepted in the Artificial Intelligence & Sustainability Workshop 14, IJCAI25, Montreal, Canada, 2025.
David Fornos, Daniel Selva, Alexander Demagall, Paul Grogan, Vinay Ravindra, “Flexible Open-Source Tool Ecosystem for Automated Tradespace Analysis and Exploration of Earth Observation Missions", accepted at 2025 IEEE International Geoscience and Remote Sensing Symposium, Australia, August 2025.
Kurtis Nelson, Sreeja Roy-Singh, Vinay Ravindra, Mahta Moghaddam, Archana Kannan, Amer Melebari, “Integration of GNSS-R Derived Soil Moisture into the USGS Wildland Fire Potential Index", accepted at 2025 IEEE International Geoscience and Remote Sensing Symposium, Australia, August 2025.
Archana Kannan, Amer Melebari, Grigorios Tsagkatakis, Angel Farguell, Kurtis Nelson, Adam Kochanski, Vinay Ravindra, Sreeja Nag, Chris Ruf, Mahta Moghaddam, “Enhanced Mapping of Wildfire-Burned Areas using GNSS-Reflectometry RAW Intermediate Frequency Data", accepted at 2025 IEEE International Geoscience and Remote Sensing Symposium, Australia, August 2025.
Vinay Ravindra, Molly Stroud, George Allen, Daniel Selva, Sarah Godsey, Ken Fritz, Jacob Honsen, Michelle Busch, and Shang Gao. “Optimizing Monitoring Routes for Electric Vehicles With Access to Multiple Charging Stations Using Mixed Integer Programming: Case Study With Non-Perennial Rivers." In AIAA SCITECH 2025 Forum, p. 2284. Jan 2025.
Alan Aguilar Jaramillo, Ben J. Gorr, Huilin Gao, Ankur Mehta, Yizhou Sun, Vinay Ravindra, Cedric David, George Allen, and Daniel Selva. “Decentralized Consensus-Based Algorithms for Satellite Observation Reactive Planning With Complex Dependencies." In AIAA SCITECH 2025 Forum, p. 1148. Jan 2025.
Jan Mandel, Samira Alkaee Taleghan, Angel Farguell, Archana Kannan, Adam Kochanski, James Haley, Cheng Da, Farnoush Banaei-Kashani, Basma Tumi, Sreeja Roy-Singh, Kyle A. Hilburn, Mahta Moghaddam, and Vinay Ravindra. “Machine Learning-Based Data Assimilation of Satellite Data in the Coupled Atmosphere-Fire Model WRF-SFIRE." In 2025 AMS Denver Summit, May 2025.
Sarah A. Strode, Meghan Saephan, Douglas A. Caldwell, Bryan N. Duncan, Kristen Manies, Vinay Ravindra, William H. Swartz, and Kate Bartlett. “Scientific Target Prioritization with the Intelligent Long Endurance Observing System (ILEOS)." Poster presented at the American Geophysical Union Fall Meeting, Washington, D.C., December 9–13, 2024.
Alan Aguilar, Benjamin J. Gorr, Huilin Gao, Ankur Mehta, Vinay Ravindra, Cedric H. David, George H. Allen, and Daniel Selva. “Decentralized Consensus-based Planning Algorithms for Monitoring Inland Bodies of Water with Autonomous Sensor Webs." Poster presented at the American Geophysical Union Fall Meeting, Washington, D.C., December 9–13, 2024.
Vinay Ravindra, Douglas Caldwell, Meghan Chandarana Saephan, Bryan Duncan, Sarah Strode, William Swartz, Kristen Manies, Jeremy Frank, Richard Levinson, and Eugene Turkov. “Science Target Prioritization Framework for Remote Sensing." In IGARSS 2024-2024 IEEE International Geoscience and Remote Sensing Symposium, pp. 689-693. IEEE, July 2024.
Sreeja Nag, Vinay Ravindra, Richard Levinson, Mahta Moghaddam, Kurtis Nelson, Jan Mandel, Adam Kochanski et al. “Distributed Spacecraft with Heuristic Intelligence to Monitor Wildfire Spread for Responsive Control." In IGARSS 2024-2024 IEEE International Geoscience and Remote Sensing Symposium, pp. 699-703. IEEE, Jul 2024.
Archana Kannan, Amer Melebari, Grigorios Tsagkatakis, Kurtis Nelson, Vinay Ravindra, Sreeja Nag, and Mahta Moghaddam. “Mapping Wildfire Burned Area Using GNSS-Reflectometry in Densely Vegetated Regions with Complex Topography: A Machine Learning Approach." In IGARSS 2024-2024 IEEE International Geoscience and Remote Sensing Symposium, pp. 2072-2076. IEEE, July 2024.
Meghan Saephan, Jeremy Frank, Richard Levinson, Vinay Ravindra, Douglas Caldwell, Bryan Duncan, Sarah Strode, William Swartz, and Eugene Turkov. “ILEOS: A Novel Intelligent Observing System Enabled by High Altitude Long Endurance Uncrewed Aerial Systems." In AIAA Aviation Forum And Ascend 2024, p. 4399. Jul 2024.
Ryan Ketzner, Vinay Ravindra, and Tarek A. Elgohary. “Cell-Based Preprocessing Algorithm for Fast Satellite Coverage Calculation." In 2024 IEEE Aerospace Conference, pp. 1-13. IEEE, Mar 2024.
Bryan Duncan, Meghan Chandarana, Jeremy Frank, Richard Levinson, Eugene Turkov, Douglas Caldwell, Vinay Ravindra, Sarah Strode, William Swartz, and Kristen Manies. “Intelligent Long Endurance Observing System (ILEOS)." In 104th American Meteorological Society (AMS) Annual Meeting. Jan 2024.
Bryan N. Dunan, Meghan Chandarana, Kate Bartlett, Douglass Caldwell, Jeremy Frank, Richard Levinson, Vinay Ravindra, Sarah Strode, and William H. Swartz. “Intelligent Long Endurance Observing System." In AGU Fall Meeting, vol. 2023, pp. A12A-08. Dec 2023.
Archana Kannan, Amer Melebari, Grigorios Tsagkatakis, Kurtis Nelson, Vinay Ravindra, Sreeja Nag, and Mahta Moghaddam. “Mapping Wildfire Burned Area using GNSS Reflectometry with Machine Learning." In AGU Fall Meeting, vol. 2023, no. 781, pp. GC51M-0781. Dec 2023.
Ben Gorr, Alan Aguilar Jaramillo, Zida Wu, Wooyeong Cho, Kewei Cheng, Molly Stroud, Vinay Ravindra, Cedric David, Huilin Gao, Yizhou Sun, Ankur Mehta, George Allen, Daniel Selva, “Multi-instrument Flood Monitoring with a Distributed, Decentralized, Dynamic and Context-Aware Satellite Sensor Web", IEEE International Geoscience and Remote Sensing Symposium, Pasadena, California, July 2023
Alan Aguila Jaramillor, Ben Gorr, Vinay Ravindra, Cedric David, Molly Stroud, Ankur Mehta, George Allen et al. “Decentralized Market-Based Observation Assignment Strategy for Dynamic Networks in Sensor Web Mission Concepts." In IGARSS 2023-2023 IEEE International Geoscience and Remote Sensing Symposium, pp. 4748-4751. IEEE, 2023.
V. Ravindra, S. Roy Singh, M. Moghaddam, K. Nelson, R. Levinson, A. Melabari, A. Kannan, “Distributed Spacecraft with Heuristic Intelligence to Enable Logistical Decisions for Global Navigation Satellite System Reflectometry (GNSS-R) of Wildfires”, NASA Earth Science Technology Forum, Pasadena CA, June 2023.
Selva, D., Allen, G.H., Gao, H., Gorr, B.J., Aguilar, A., Viros-i-Martin, A., Sun, Y., Mehta, A., Ravindra, V., David, C.H. and Stroud, M., “Simulating A Context-aware Heterogeneous Sensor System for Monitoring Inland Waters and Ecosystems with 3D-CHESS”, in AGU Fall Meeting, Vol. 2022, pp. IN12C-0275, December 2022.
A. Melebari, S. Nag, V. Ravindra, M. Moghaddam, “Soil Moisture Retrieval from Multi-Instrument and Multi-Frequency Simulated Measurements in Support of Future Earth Observing Systems”, IEEE International Geoscience and Remote Sensing Symposium, Kuala Lumpur, Malaysia, July 2022
Kannan, A., Tsagkatakis, G., Akbar, R., Selva, D., Ravindra, V., Levinson, R., Nag, S. and Moghaddam, M., 2022, July. “Forecasting Soil Moisture Using a Deep Learning Model Integrated with Passive Microwave Retrieval”. In IGARSS 2022-2022 IEEE International Geoscience and Remote Sensing Symposium (pp. 6112-6114). IEEE.
Levinson, R., Niemoeller, S., Nag, S., Ravindra, V., “Planning Satellite Swarm Measurements for Earth Science Models: Comparing Constraint Processing and MILP Methods”, Proceedings of the International Conference on Automated Planning and Scheduling, 32(1), 471-479, 2022.
V. Ravindra, R.Ketzner, S. Nag, “EO-Sim: An open-source library for design and evaluation of space observation systems; a discussion on the software design and development”, American Geophysical Union Fall Meeting, San Francisco CA, December 2021.
L. Rogers, J. Carden, Blake Clark,S. Schollaert Uz, T. Huang, V. Tsontos, S. Nag, V. Ravindra, J. Scott, “Merging Analytic Collaborative Frameworks with New Observing Strategies Toward a Digital Twin: Earth – Episodic Pulse Event Impacts on Ocean Carbon Cycle as an Example”, American Geophysical Union Fall Meeting, December 2021
A. Kannan, G. Tsagkatakis, R. Akbar, D. Selva, V. Ravindra, R. Levinson, S. Nag, M. Moghaddam, “Forecasting Geophysical States using a Deep Learning Model for Spacecraft Constellation Scheduling and Planning”, American Geophysical Union Fall Meeting, December 2021.
S. Nag, M. Moghaddam, D. Selva, V. Ravindra, R. Levinson, A. Azemati, B.J. Gorr, R. Akbar, “Simulating the Impact of Agile, Heterogeneous, Distributed Spacecraft with Intelligent Scheduling (D-SHIELD) to reduce global Soil Moisture Uncertainty”, American Geophysical Union Fall Meeting, December 2021
R. Levinson, S. Nag, V. Ravindra, “Agile Satellite Planning for Multi-Payload Observations to aid Earth Science”, International Workshop on Planning and Scheduling for Space, Virtual Forum, July 2021.
V. Ravindra, R. Ketzner, S. Nag, “Earth Observation Simulator (EO-SIM): An Open-Source Software for Observation Systems Design”, IEEE International Geoscience and Remote Sensing Symposium, Brussels Belgium, July 2021.
S. Nag, M. Moghaddam, D. Selva, J. Frank, V. Ravindra, R. Levinson, A. Azemati, B. Gorr, A. Li, R. Akbar, “Soil Moisture Monitoring using Autonomous and Distributed Spacecraft (D-SHIELD)”, IEEE International Geoscience and Remote Sensing Symposium, Brussels Belgium, July 2021.
B. Gorr, A. Aguilar, D. Selva, V. Ravindra, M. Moghaddam, S. Nag, “Heterogeneous Constellation Design for a Smart Soil Moisture Radar Mission”, IEEE International Geoscience and Remote Sensing Symposium, Brussels Belgium, July 2021.
E. Sin, M. Arcak, A. S. Li, V. Ravindra, S. Nag, “Attitude Trajectory Optimization for Agile Satellites in Autonomous Remote Sensing Constellations”, AIAA Science and Technology Forum and Exposition (SciTech Forum), Nashville, January 2021
V. Ravindra, S. Nag, A. S. Li, “Optimal Sensing of Tropical Cyclones by Constellation of Low Earth Orbiting Satellites, Guided by Numerical Weather Prediction Model Ensemble Track Forecasts and Assimilation of Observed/ Missed TC Center Measurements”, American Geophysical Union Fall Meeting, San Francisco CA, December 2020.
S. Nag, M. Moghaddam, D. Selva, J. Frank, V. Ravindra, R. Levinson, A. Azemati, A. Aguilar, A. Li, R. Akbar, “Distributed Spacecraft with Heuristic Intelligence to Enable Logistical Decisions (D-SHIELD) for Soil Moisture Monitoring”, American Geophysical Union Fall Meeting, San Francisco CA, December 2020.
S. Nag, M. Sanchez Net, A. S. Li, V. Ravindra, “Designing a Disruption Tolerant Network for Reactive Spacecraft Constellations”, AIAA ASCEND Conference, Las Vegas, November 2020.
S. Nag, M. Moghaddam, D. Selva, J. Frank, V. Ravindra, R. Levinson, A. Azemati, A. Aguilar, A. Li, R. Akbar, “D-SHIELD: Distributed Spacecraft with Heuristic Intelligence to Enable Logistical Decisions”, IEEE International Geoscience and Remote Sensing Symposium, Hawaii USA, July 2020.
V. Ravindra, S. Nag, “Instrument Data Metrics Evaluator for Tradespace Analysis of Earth Observing Constellations”, IEEE Aerospace Conference, Big Sky, Montana, March 2020.
S. Nag, A. S. Li, V. Ravindra, M. Sanchez Net, K. Cheung, R. W. Lammers, B. P. Bledsoe, “Autonomous Scheduling of Agile Spacecraft Constellations with Delay Tolerant Networking for Monitoring Transient Precipitation and Urban Floods”, American Geophysical Union Fall Meeting, San Francisco CA, December 2019.
S. Nag, A. S. Li, V. Ravindra, M. Sanchez Net, K.M. Cheung, R. Lammers, B. Bledsoe, “Autonomous Scheduling of Agile Spacecraft Constellations with Delay Tolerant Networking for Reactive Imaging”, International Conference on Automated Planning and Scheduling SPARK Workshop, Berkeley CA, July 2019.
S. Nag, P. Dabney, V. Ravindra, C. Anderson, “Planning a Reference Constellation for Radiometric Cross-Calibration of Commercial Earth Observing Sensors”, International Workshop on Planning and Scheduling for Space, Berkeley CA, July 2019.
S. Nag, J. Verville, P. Dabney, P. Dutta, P. Grogan, J. Gurganus, D. Selva, P.G. Buzzi, S. Hughes, E. Magliarditi,V. Ravindra, A. Siddiqi, M. Stark, “Constellation Operations and Instrument Analysis for Earth Science Missions using TAT-C”, NASA Earth Science Technology Forum, Mountain View, California, June 2019.
S. Nag, A.S. Li, V. Ravindra, M. Sanchez Net, K.M. Cheung, R. Lammers, B. Bledsoe, “Autonomous Scheduling of Agile Spacecraft Constellations with Delay Tolerant Networking for Reactive Imaging”, NASA Earth Science Technology Forum, Mountain View, California, June 2019.
S. Nag, V. Ravindra, J.J. LeMoigne, “Instrument Modeling Concepts for Tradespace Analysis of Satellite Constellations”, IEEE Sensors Conference, Delhi, India, October 2018.
H. Saito, P.R. Akbar, K. Tanaka, M. Mita, V. Ravindra, B. Pyne, J. Hirokawa, S. Shirasaka, H. Watanabe, K. Ura, and K. Ichiji, “Development Status of Compact X-band Synthetic Aperture Radar Compatible with a100kg-class SAR Satellite and Its Future Plan”, Proceedings of the 31st Annual AIAA/USU Conference on Small Satellites, 2017.
B. Pyne, V. Ravindra, P. A. Riziki, H. Saito and J. Hirokawa, “Performance analysis of edge-feed rectangular parallel plate slot-array antenna panel for compact space-borne X-band SAR system”, 2017 International Conference on Electromagnetics in Advanced Applications (ICEAA), Verona, 2017, pp. 407-410.
H. Saito, P.R. Akbar, V. Ravindra, A. Tomiki, H. Watanabe, J. Hirokawa, M. Zhang and S. Shirasaka, “Compact X-band Synthetic Aperture Radar with Deployable Plane Antenna and RF Feeding System through Non-contact Waveguides-Project of a 100kg-class SAR Satellite”, Proceedings of the AIAA/USU Conference on Small Satellite, 2016.
V. Ravindra, P. Akbar, H. Saito, M. Zhang and J. Hirokawa, “A parallel plate slot-pair array dual polarization antenna for small satellite SAR”, 2015 International Symposium on Antennas and Propagation (ISAP), Hobart, TAS, 2015, pp. 1-4.
V. Ravindra, H. Saito, P. Akbar, M. Zhang and J. Hirokawa, “Optimal cross-range pattern synthesis using multi-objective genetic algorithm for a passive antenna in small satellite SAR”, 2015 International Symposium on Antennas and Propagation (ISAP), 2015
V. Ravindra, H. Saito, J. Hirokawa and M. Zhang, “Cylindrical cavity microwave power combiner with microstrip line inputs and rectangular waveguide output”, 2015 IEEE MTT-S International Microwave Symposium, Phoenix, AZ, 2015, pp. 1-4.
B. Pyne, V. Ravindra and H. Saito, “An improved pulse repetition frequency selection scheme for synthetic aperture radar”, 2015 European Radar Conference (EuRAD), 2015, pp. 257-260.
V. Ravindra, H. Saito and J. Hirokawa, “Optimal power coupling coefficient distribution determination for dual feed leaky waveguide array using multi objective genetic algorithm”, The 8th European Conference on Antennas and Propagation (EuCAP 2014), The Hague, 2014, pp. 1507-1511.