Results 81 to 90 of about 521,689 (245)

Intensity Simulation of a Fourier Transform Infrared Spectrometer

Sensors, 2020
This paper introduces an intensity simulation for the Fourier transform infrared spectrometer whose core element is the Michelson interferometer to provide support for the on-orbit monitoring of the instrument and to improve the data processing and ...
Zhuoya Ni, Qifeng Lu, Yishu Xu, Hongyuan Huo   +3 more
doaj   +1 more source

Geometric, Radiometric, Polarimetric and Along-Track Interferometric Calibration of the new F-SAR System of DLR in X-Band [PDF]

, 2008
Since November 2006, DLR operates F-SAR - a new airborne SAR sensor beside its experimental airborne SAR sensor E-SAR. F-SAR is a totally new development utilizing most modern hardware.
Nottensteiner, Anton, Horn, Ralf, Reigber, Andreas, Baumgartner, Stefan, Scheiber, Rolf, Fischer, Jens   +5 more
core  

Classification of tree species and standing dead trees in Boreal forests using UAV‐based RGB, multispectral, and LiDAR point clouds

Remote Sensing in Ecology and Conservation, EarlyView.
We evaluated single‐ and multi‐sensor UAV approaches for classifying tree species and standing dead trees in boreal forests, focusing on key biodiversity indicators such as European aspen. Using spectral and structural features extracted from RGB, multispectral (MSP), and LiDAR point clouds for 1,205 field‐measured trees, we compared classification ...
Anton Kuzmin, Lauri Korhonen, Topi Tanhuanpää, Mikko Kukkonen, Matti Maltamo, Timo Kumpula   +5 more
wiley   +1 more source

Introducing Equivalent Radar Cross Section – A First Step Toward new Radiometric Requirement Definitions [PDF]

, 2014
Stringent radiometric SAR system requirements often significantly shape the design and cost of modern SAR systems. Yet the wording in current requirement documents is ambiguous, and a diligent conformance assessment at the end of project phases currently
Döring, Björn, Schwerdt, Marco
core  

Monitoring of Crustose Coralline Algae Using Low‐Altitude Unmanned Aerial Vehicles in Intertidal Reefs

Remote Sensing in Ecology and Conservation, EarlyView.
High‐resolution visible‐light imagery from low‐altitude unmanned aerial vehicles, combined with superpixel segmentation and a Random Forest classifier, provides an efficient and scalable framework for mapping and monitoring crustose coralline algae and reef habitats.
Po‐Chien Lin, Han‐Yang Yeh, Zhi‐Cheng Huang   +2 more
wiley   +1 more source

In-flight radiometric calibration of the Metis UV H  [PDF]

Context. We present the results of the in-flight radiometric calibration performed for the ultraviolet (UV) H 
Landini, F., C. Casini, M. Fabi, Casini, C., Frassetto, F., Heinzel, P., Guglielmino, S. L., E. Magli, Bemporad, A., S. Giordano, Slemer, A., S. Fineschi, Capuano, G., Telloni, D., Andretta, V., G. Naletto, M. Casti, A. Burtovoi, Abbo, L., U. Schühle, A. Slemer, Moses, J. D., L. Teriaca, F. Landini, Massone, G., Zangrilli, L., Fineschi, S., Casti, M., F. Frassati, A. Bemporad, Grimani, C., Romano, P., Y. De Leo, Corso, A. J., Fabi, M., J. D. Moses, Naletto, G., Pancrazzi, M., V. Andretta, M. Messerotti, M. Uslenghi, Susino, R., Straus, T., Capobianco, G., Teriaca, L., D. Telloni, A. J. Corso, C. Grimani, Jerse, G., Liberatore, A., C. A. Volpicelli, Giarrusso, M., Nicolini, G., Uslenghi, M., M. Pancrazzi, G. Nicolini, G. Capobianco, Frassati, F., F. Frassetto, L. Zangrilli, G. Massone, Chioetto, P., V. Da Deppo, Magli, E., G. Capuano, G. Jerse, S. L. Guglielmino, Stangalini, M., Russano, G., Da Deppo, V., G. Russano, P. Heinzel, Burtovoi, A., P. Romano, M. G. Pelizzo, Giordano, S., P. Zuppella, C. Sasso, De Leo, Y., Pelizzo, M. G., R. Susino, Schühle, U., Volpicelli, C. A., P. Chioetto, Messerotti, M., Zuppella, P., M. Romoli, A. Liberatore, D. Spadaro, L. Abbo, M. Stangalini, M. Giarrusso, T. Straus, Romoli, M., Spadaro, D., Sasso, C., Moses, J., Volpicelli, C., Guglielmino, S., Corso, A., Pelizzo, M.   +100 more
core   +1 more source

Mapping Scytonemin Pigment Content and Biocrust Functional Indicators Using High‐Resolution Multispectral Imagery

Remote Sensing in Ecology and Conservation, EarlyView.
We demonstrate that high‐resolution multispectral imagery combined with machine learning can accurately predict key biocrust functional indicators, particularly the UV‐protective pigment scytonemin, across dryland ecosystems. Using fine‐scale imagery acquired in the Chihuahuan Desert and Colorado Plateau, we identified spectral bands strongly ...
Raúl Román, Tong Qiu, Fernando T. Maestre, Elizabeth A. La Rue, Sergio Vargas Zesati, Anthony Schaefer, Ryan V. Trexler, Nicole Pietrasiak, Estelle Couradeau   +8 more
wiley   +1 more source

Environmental Stressors Influence Spatial Complexity in a Fluvial Macrophyte meadow

Remote Sensing in Ecology and Conservation, EarlyView.
This research investigates the nonlinear relationships between environmental stressors and the fine‐scale spatial complexity of a fluvial macrophytes meadow. The use of multivariate spatial analysis allowed us to identify two major environmental gradients (nutrients and light) and two major complexity gradients (related to abundance and fragmentation).
Arthur de Grandpré, Christophe Kinnard, Andrea Bertolo   +2 more
wiley   +1 more source

Improved Cerrado Wetland Mapping Through Seasonal Moisture Metrics, Terrain Information and Semantic Segmentation

Remote Sensing in Ecology and Conservation, EarlyView.
Brazil's Cerrado valley wetlands—swamp savanna and gallery forest—are highly important for the biome's water cycle and carbon storage and are susceptible to degradation from the impacts of land use expansion and the climate crisis. In support of their detailed monitoring and assessment, we developed and tested a transferable mapping approach that ...
Felix Beer, Hugo do Nascimento Bendini, Mateus de Souza Miranda, Vu‐Dong Pham, Leila Maria Garcia Fonseca, Cássia Beatriz Rodrigues Munhoz, Sebastian van der Linden   +6 more
wiley   +1 more source

High‐Resolution Satellite Imagery Reveals Landscape‐Scale Benthic Habitat Changes in a Turbid Coral Reef

Remote Sensing in Ecology and Conservation, EarlyView.
High‐resolution satellite imagery and landscape metrics revealed a 77% decline in coral‐dominated habitats at Abrolhos Bank between 2010 and 2024, accompanied by macroalgal and zoanthid expansion. Spatial reorganisation indicates increasing fragmentation, homogenisation and loss of reef structural complexity.
Thais Andrade Galvão de Medeiros, Maria Laura Zoffoli, Gabriel Moiano, Vittorio Brando, Milton Kampel   +4 more
wiley   +1 more source