| 2023 | IGARSS | Next-Generation L-Band SAR Deforestation Detection for Operational Forest Early Warning in the Tropics. | Christian N. Koyama, Masanobu Shimada, Kazufumi Kobayashi, Masato Hayashi, Takeo Tadono |
| 2023 | IGARSS | Achievements of the ALOS-2 L-Band SAR Long-Term Pantropical Forest Monitoring Mission. | Christian N. Koyama, Masanobu Shimada, Kazufumi Kobayashi, Manabu Watanabe, Ake Rosenqvist, Masato Hayashi, Tsutomu Yamanokuchi, Takeo Tadono |
| 2022 | IGARSS | Advancements in Global Forest Monitoring Research Founded on ALOS-2 Long-Term Pantropical Land Observation. | Christian N. Koyama, Manabu Watanabe, Masato Hayashi, Masanobu Shimada, Kazufumi Kobayashi, Takeo Tadono |
| 2021 | IGARSS | Trial of Detection Accuracies Improvement for JJ-FAST Deforestation Detection Algorithm Using Deep Learning. | Manabu Watanabe, Christian N. Koyama, Masato Hayashi, Izumi Nagatani, Takeo Tadono, Masanobu Shimada |
| 2021 | IGARSS | Improving L-Band SAR Forest Monitoring by Big Data Deep Learning Based on ALOS-2 5 Years Pan-Tropical Observations. | Christian N. Koyama, Manabu Watanabe, Edson Eyji Sano, Masato Hayashi, Izumi Nagatani, Takeo Tadono, Masanobu Shimada |
| 2020 | IGARSS | Seasonal Change Analysis for ALOS-2 PALSAR-2 Deforestation Detection. | Izumi Nagatani, Masato Hayashi, Manabu Watanabe, Takeo Tadono, Tomohiro Watanabe, Christian N. Koyama, Masanobu Shimada |
| 2020 | IGARSS | Trial of Deforestation Detection by Using 25M Resolution PALSAR-2/ScanSAR Data. | Manabu Watanabe, Christian N. Koyama, Masato Hayashi, Izumi Nagatani, Takeo Tadono, Masanobu Shimada |
| 2020 | IGARSS | Rainfall-Induced Changes in L-Band Backscatter Over Tropical Forests and Their Impact on Deforestation Monitoring. | Christian N. Koyama, Manabu Watanabe, Masato Hayashi, Izumi Nagatani, Takeo Tadono, Masanobu Shimada |
| 2019 | IGARSS | Pixel-Based Deforestation Detection Algorithm for ALOS-2/PALSAR-2. | Izumi Nagatani, Masato Hayashi, Manabu Watanabe, Takeo Tadono, Tomohiro Watanabe, Christian N. Koyama, Masanobu Shimada |
| 2019 | IGARSS | Improvement of Deforestation Detection Algorithms Used In JJ-FAST. | Manabu Watanabe, Christian N. Koyama, Masato Hayashi, Izumi Nagatani, Takeo Tadono, Masanobu Shimada |
| 2019 | IGARSS | Advanced Polarimetric Stereo-Sar for Tsunami Debris Estimation and Disaster Mitigation. | Christian N. Koyama, Shunichi Koshimura, Motoyuki Sato |
| 2019 | IGARSS | Mapping Spatial-Temporal Forest Heterogeneity in the Tropical Belt by ALOS-2/PALSAR-2 Big Data Analysis. | Christian N. Koyama, Manabu Watanabe, Masanobu Shimada |
| 2018 | IGARSS | Forest Early Warning System Using ALOS-2/PALSAR-2 Scansar Data (JJ-FAST). | Izumi Nagatani, Masato Hayashi, Manabu Watanabe, Takeo Tadano, Tomohiro Watanabe, Christian N. Koyama, Masanobu Shimada |
| 2018 | IGARSS | Semi-Automatic Deforestation Detection Algorithm with PALSAR-2/ScanSAR HH/HV Polarizations. | Manabu Watanabe, Christian N. Koyama, Masato Hayashi, Izumi Nagatani, Takeo Tadono, Masanobu Shimada |
| 2018 | IGARSS | Monitoring of Soil Moisture Dynamics in the Semi-Arid Tropics by Means of ALOS-2/PALSAR-2 Dual-Polarization ScanSAR Data. | Christian N. Koyama, Manabu Watanabe, Masanobu Shimada |
| 2017 | IGARSS | Development of early-stage deforestation detection algorithm (advanced) with PALSAR-2/ScanSAR for JICA-JAXA program (JJ-FAST). | Manabu Watanabe, Christian N. Koyama, Masato Hayashi, Yutaka Kaneko, Masanobu Shimada |
| 2017 | IGARSS | Polarimetric characteristics of L-band SAR images of early-stage deforestation areas. | Manabu Watanabe, Christian N. Koyama, Masanobu Shimada |
| 2017 | IGARSS | The effect of precipitation and soil moisture variations on (partial) polarimetric L-band SAR backscatter in tropical forest regions. | Christian N. Koyama, Manabu Watanabe, Masato Hayashi, Masanobu Shimada |
| 2015 | IGARSS | Urban damage mapping using scattering mechanism investigation technique for fully polarimetric SAR data. | Si-Wei Chen, Yongzhen Li, Xuesong Wang, Christian N. Koyama, Motoyuki Sato |
| 2015 | IGARSS | Full polarimetric UWB GB-SAR for damage assessment of wooden building structures. | Christian N. Koyama, Yasushi Iitsuka, Kazunori Takahashi, Motoyuki Sato |
| 2015 | IGARSS | Development of a biomass corrected soil moisture retrieval model for dual-polarization ALOS-2 data based on ALOS/PALSAR and PI-SAR-L2 observations. | Christian N. Koyama, Karl Schneider, Motoyuki Sato |
| 2014 | IGARSS | Investigation on near range SAR for inspecting inner structure of buildings. | Motoyuki Sato, Kazunori Takahashi, Hai Liu, Christian N. Koyama |
| 2014 | IGARSS | Estimation of soil moisture and debris pile volume from Pi-SAR2X and Pi-SAR-L2 square-flight data. | Christian N. Koyama, Motoyuki Sato |
| 2012 | IGARSS | Vegetation effects on L-band soil moisture retrieval - Lessons learned from 5 years of ALOS PALSAR observations. | Christian N. Koyama, Karl Schneider |
| 2011 | IGARSS | Soil moisture retrieval under vegetation using dual polarized PALSAR data. | Christian N. Koyama, Karl Schneider |