2026 Journal Issues 4 days ago
Special Issue: Earth Remote Sensing and Data Processing
Volume 114, Issue 2
February 2026
Guest Editors
Leung Tsang, Joel T. Johnson, Jiancheng Shi, Irena Hajnsek, and Jeff Dozier
Special Issue Papers
By L. Tsang, J. T. Johnson, J. Shi, I. Hajnsek, and J. Dozier
By A. Moreira et al.
This article provides an overview of current and future synthetic aperture radar sensors and technologies. Both “NewSpace” and “full fledged” sensor categories are included and described in detail.
By K. Scipal et al.
This article describes the pre-launch status of ESA’s BIOMASS mission, the first P-band SAR system to be operated from Earth orbit.
By W. J. Blackwell et al.
This article describes results from the TROPICS constellation of “small sat” microwave radiometers designed for atmospheric and tropical cyclone measurements. The mission objectives and accomplishments are discussed in detail.
By G. Macelloni et al.
This article presents progress in an emerging concept in microwave radiometry: the use of 0.4-2-GHz observations. The future utility of these observations in characterizing Earth’s polar regions is described along with plans for future Earth observing missions.
By P. Zhang et al.
This article describes the newly launched China’s Fengyun3G precipitation mission that includes a dual-frequency Ku/Ka band precipitation radar, a multifrequency microwave radiometer, visible/IR, and radio occultation measurements. The article summaries its instruments characteristics, and some results with the combined active and passive microwave observations are described.
By C. Ruf and S. Gleason
This article provides an overview of the use of global navigation satellite system-reflectometry for performing “signals of opportunity” Earth observations. Results from NASA’s CYGNSS constellation of small satellites are reviewed, and plans for future developments and deployments are presented.
By H. Guo et al.
This article overviews the SDGSAT-1 mission of China, which combines a thermal infrared spectrometer, multispectral optical/NIR imager, and glimmer multispectral imager focused on nighttime applications. The mission’s sensors and their multiple derived products are reviewed.
By B. J. Drouin et al.
This article presents an overview of and results from the 2-satellite constellation of the PREFIRE mission. The mission operates broadband thermal spectrometers having <2-µm-wide channels from 5 to 54 µm that reveal new insights into the utility of far infrared (FIR) spectrometry.
By X. Li et al.
This article reviews the use of artificial intelligence techniques in satellite ocean remote sensing. The results demonstrate the utility of artificial intelligence and provide recommendations for future development.
By M. Muller et al.
This article presents hybrid deep learning methods for traditional optical image processing tasks. The article describes how hybrid combinations of classical physics-based models and deep learning methods can avoid the limitations of physics-only or machine-learning-only methods and provide improved sensing performance.