| 2024 | IGARSS | Profiling of Mars Atmospheric Carbon Dioxide Isotopologues Using 2-Micron Orbiting Lidar. | Tamer F. Refaat, Upendra N. Singh |
| 2019 | IGARSS | Frequency Control of Multi-Pulse 2-micron Laser Transmitter for Atmospheric Carbon Dioxide Measurement. | Mulugeta Petros, Tamer F. Refaat, Upendra N. Singh, Charles W. Antill, Ruben G. Remus, Teh-Hwa Wong, Jane Lee, Syed Ismail |
| 2019 | IGARSS | Ground Testing of 2μm Triple-Pulse IPDA Lidar for Carbon Dioxide and Water Vapor Measuremets. | Tamer F. Refaat, Mulugeta Petros, Upendra N. Singh, Charles W. Antill, Ruben G. Remus, Syed Ismail |
| 2019 | IGARSS | Active Optical Remote Sensing Sensors and Instrumentation for NASA's Future Earth and Space Science Measurements/Missions. | Upendra N. Singh |
| 2018 | IGARSS | MCT Avalanche Photodiode Detector FOR Two-MICRON Active Remote Sensing Applications. | Tamer F. Refaat, Upendra N. Singh, Mulugeta Petros, Ruben G. Remus |
| 2018 | IGARSS | Water Vapor Column Measurements With Infrared Active Optical IPDA Lidar. | Upendra N. Singh, Syed Ismail, Tamer F. Refaat, Mulugeta Petros |
| 2017 | IGARSS | Triple-pulse integrated path differential absorption lidar for carbon dioxide measurement - Novel lidar technologies and techniques with path to space. | Upendra N. Singh, Tamer F. Refaat, Mulugeta Petros |
| 2017 | IGARSS | Integrating a Doppler wind lidar into a network of wind observing systems: Capitalizing on synergisms with a high precision, cloud scene penetrating lidar. | G. David Emmitt, Michael J. Kavaya, Upendra N. Singh |
| 2010 | IGARSS | Nasa's Laser Risk Reduction Program: A risk reduction approach for technology development. | Eduardo Torres-Martinez, William S. Heaps, Upendra N. Singh |
| 2004 | IGARSS | An overview of NASA's Laser Risk Reduction Program. | Anne Marie Novo-Gradac, William S. Heaps, Upendra N. Singh |
| 2003 | IGARSS | 2-micron coherent Doppler lidar for space-based global wind field mapping. | Farzin Amzajerdian, Michael J. Kavaya, Upendra N. Singh, Jirong Yu |