Results 71 to 80 of about 623,780 (223)

Beyond SMAP: Can GNSS‐R Platforms Ensure Continuity of Global Soil Moisture Observations?

Water Resources Research, Volume 62, Issue 9, September 2026.
Abstract The absence of a definitive follow‐on strategy for the Soil Moisture Active Passive (SMAP) mission, which has already surpassed its planned mission lifetime, presents a significant challenge for the hydrological science community. GNSS‐Reflectometry (GNSS‐R), which exploits reflected satellite navigation signals, has emerged as a rapidly ...
Ehsan Jalilvand, Sujay V. Kumar, Rajat Bindlish, Jerry W. Wegiel, Mehmet Kurum, Hyunglok Kim, Pang‐Wei Liu, Mahdi Navari   +7 more
wiley   +1 more source

Spaceborne to UAV Bistatic Radar System for High-resolution Imaging and Autonomous Navigation [PDF]

, 2010
Bistatic radars offer several advantages when compared to their monostatic counterparts. In addition to increased per- formance, sensitivity, coverage and revisit times, all of them parameters which are mainly dependent on their spatial configuration ...
del Monte, Luca, Younis, Marwan, Rodriguez-Cassola, Marc, Krieger, Gerhard, Oswald, Michael   +4 more
core  

Asynchronous Coupling Between China's Forest Canopy Structure and Belowground Biomass Carbon in the 21st Century

Land Degradation &Development, Volume 37, Issue 14, Page 10127-10146, 30 August 2026.
ABSTRACT The spatio‐temporal relationship between Forest Canopy Structure (FCS) and Belowground Biomass Carbon (BGBC) is fundamental to determining how optimizing spatial structure can maximize forest carbon‐sink potential in land management. However, the lidar data resolution over the space and time exists limitation, causing the coupling relationship
Chengyin Liu, Hongpeng Liu, Yan Xu, Yiyun Zhang, Chengyuan Wang, Yao Yao, Binyu Wang, Hairui Yu, Yuzhu Zhao, Mingze Li, Xuegang Mao   +10 more
wiley   +1 more source

Airborne Road Traffic Monitoring with Radar [PDF]

, 2007
To ensure mobility, future road traffic management needs actual and reliable information about the traffic over wide areas. Nowadays, outside of motorways the actual traffic situation is almost unknown due to the lack of sensor installations.
Bethke, Karl-Heinz, Baumgartner, Stefan, Gabele, Martina   +2 more
core  

Airborne Synthetic Aperture Radar: Models, Focusing and Experiments [PDF]

, 2006
Synthetic Aperture Radar (SAR) is a remote sensing technique that allows the generation of microwave images of the Earth surface, independently of weather condition and of sun illumination.
Perna, Stefano
core   +1 more source

Clutter Modeling and Characteristics Analysis for GEO Spaceborne-Airborne Bistatic Radar

Remote Sensing
The spaceborne-airborne bistatic radar (SABR) system employs a spaceborne transmitter and an airborne receiver, offering significant advantages, such as wide coverage, outstanding anti-stealth capabilities, and notable resistance to jamming.
Shuo Zhang, Shuangxi Zhang, Tianhua Guo, Ruiqi Xu, Zicheng Liu, Qinglei Du   +5 more
doaj   +1 more source

Lidar Ratios and Fluorescence Properties of Stratospheric Volcanic Sulfate

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract From January to June 2025, a stratospheric sulfate layer originating from the eruptions of the Ruang volcano in April 2024 could be observed with a multi‐wavelength Raman and fluorescence lidar over Leipzig, Germany. The aerosol‐optical depth of the stratospheric volcanic sulfate was <0.02 ${< } 0.02$, decreasing with time.
Benedikt Gast, Cristofer Jimenez, Albert Ansmann, Holger Baars, Ulla Wandinger   +4 more
wiley   +1 more source

The TanDEM-X mission: A satellite formation for high resolution SAR interferometry [PDF]

, 2007
TanDEM-X (TerraSAR-X add-on for Digital Elevation Measurements) is an innovative spaceborne radar interferometer mission that was approved for full implementation by the German Space Agency in spring 2006.
Hajnsek, Irena, H. Fiedler, J. Hueso Gonzalez, A. Moreira, M. Zink, M. Bachmann, Fiedler, Hauke, Krieger, Gerhard, Hueso Gonzalez, Jaime, Werner, Marian, I. Hajnsek, Huber, Sigurd, Zink, Manfred, S. Huber, Moreira, Alberto, Younis, Marwan, G. Krieger, Bachmann, Markus, M. Werner, M. Younis   +19 more
core   +1 more source

The Role of Lightning in Atmospheric Chemistry

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 16, 28 August 2026.
Abstract Lightning has important effects on atmospheric constituents in primarily the middle and upper troposphere. We summarize the effects of lightning on atmospheric chemistry that have been published since the last major review in 2007. The estimates of NOx production by lightning (LNOx) are based on five methods: theoretical/laboratory estimates ...
Kenneth E. Pickering, Dale J. Allen, Heidi Huntrieser   +2 more
wiley   +1 more source

New processing approach and results for bistatic TerraSAR-X/F-SAR spaceborne-airborne experiments [PDF]

, 2009
Following the success of the first bistatic spaceborne-airborne experiment between TerraSAR-X and FSAR carried out in November 2007, DLR has performed a second bistatic experiment in July 2008 with new challenging acquisitions.
Nottensteiner, Anton, Hajnsek, Irena, Horn, Ralf, Moreira, Alberto, Prats, Pau, Baumgartner, Stefan, Rodriguez-Cassola, Marc, Krieger, Gerhard   +7 more
core