Results 101 to 110 of about 694,763 (254)

Insights From the Alphasat Aldo Paraboni Experiment at Tito Scalo and Spino d'Adda: Characterizing Scintillation and Rain Attenuation at Ka‐ and Q‐Band Frequencies

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT We present experimental results on the relationship between rain attenuation and simultaneous scintillation during rain events, based on beacon signal measurements at 19.7 (Ka‐band) and 39.4 GHz (Q‐band) from the geosynchronous Alphasat satellite (25° E), received at two Italian ground stations, Spino d'Adda (42.1° slant path) and Tito Scalo ...
Miles Turner, Alef Comisso, Carlo Riva, Lorenzo Luini, Giuseppe Codispoti, Giorgia Parca   +5 more
wiley   +1 more source

Experimental assessment of large mammal population estimates from airborne thermal videography

Wildlife Biology, EarlyView.
Wildlife resource management requires reliable, fast, and affordable methods of surveying wildlife populations to develop and adaptively adjust policies. Thermal video from drones can yield high rates of detection over large areas with relative speed and safety.
Julia S. McElhinny, Gregory D. Larsen, Maxwell Messinger, Chad H. Newbolt, Andrew Whitworth, Stephen S. Ditchkoff, Miles R. Silman, Jared T. Beaver   +7 more
wiley   +1 more source

Spatial Resolution Enhancement of Microwave Radiation Imager (MWRI) Data

Remote Sensing
A spaceborne microwave radiometer has a low spatial resolution limited by its antenna size. Enhancing the spatial resolution of data acquired by such sensors can improve the quality of subsequent applications.
Yihong Bai, Zhaojun Zheng, Jie Shen, Na Xu, Guangzhen Cao, Hongyi Xiao   +5 more
doaj   +1 more source

Radiometric Calibration of UAV Remote Sensing Image with Spectral Angle Constraint

Remote Sensing, 2019
In recent years, the acquisition of high-resolution multi-spectral images by unmanned aerial vehicles (UAV) for quantitative remote sensing research has attracted more and more attention, and radiometric calibration is the premise and key to the ...
Kai Xu, Yan Gong, Shenghui Fang, Ke Wang, Zhiheng Lin, Feng Wang   +5 more
semanticscholar   +1 more source

Facilitating macrosystem biology with organismal‐scale airborne remote sensing: Challenges and opportunities

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Emergent ecosystem properties, such as population and trait distributions, biodiversity and energy and water fluxes, occur because of the dynamic interactions of individuals in their environment.
Sarah J. Graves, Ritesh Chowdhry, Meilun Zhou, Ira Harmon, Ben Weinstein, S. K. Morgan Ernest, Alina Zare, Ethan P. White, Stephanie A. Bohlman   +8 more
wiley   +1 more source

A reappraisal of the Middle to Later Stone Age prehistory of Morocco Réévaluer la préhistoire du Maroc, du Middle Stone Age au Later Stone Age

Journal of the Royal Anthropological Institute, EarlyView.
Over the last 25 years, perceptions of the early prehistory of Northwest Africa have undergone radical changes due to new fieldwork projects and a corresponding growth in scientific interest in the region. Much of this work has been focused in Morocco, known for its extremely rich fossil and archaeological records in caves and rock shelters.
Nick Barton, Abdeljalil Bouzouggar, Stacy Carolin, Louise Humphrey   +3 more
wiley   +1 more source

Laboratory Radiometric Calibration Technique of an Imaging System with Pixel-Level Adaptive Gain. [PDF]

Sensors (Basel), 2023
Li Z, Wei J, Huang X, Xu F.
europepmc   +1 more source

Classification of North Africa for Use as an Extended Pseudo Invariant Calibration Sites (EPICS) for Radiometric Calibration and Stability Monitoring of Optical Satellite Sensors

Remote Sensing, 2019
Pseudo invariant calibration sites (PICS) have been extensively used for the radiometric calibration and temporal stability monitoring of optical satellite sensors.
M. Shrestha, L. Leigh, D. Helder
semanticscholar   +1 more source

Divergence Linked to Possible Ecological Speciation in Blind Mole Rats: Integration of Thermal Biology and Bite Force in the Upper Galilee Blind Mole Rat (Nannospalax galili)

Integrative Zoology, EarlyView.
Basalt‐dwelling blind mole rats maintain lower body temperatures, show greater post‐digging thermal increases, and dig more efficiently than those from rendzina soils. Although metabolic rates and bite force did not differ between populations, these thermal and physiological shifts align with the greater mechanical resistance and seasonal hypoxia of ...
Matěj Lövy, Jan Okrouhlík, František Vejmělka, Pavlína Schwarzová, Maja Rendulić, Eviatar Nevo, Radim Šumbera   +6 more
wiley   +1 more source

Absolute radiometric calibration with lunar surface reflectance as reference for earth-observing VNIR camera. [PDF]

Heliyon, 2022
Tan W, Wang X, He H, Qi W.
europepmc   +1 more source