Results 61 to 70 of about 105,450 (150)

Obtención de energía solar y uso eficiente en la orientación de pequeños satélites

open access: yes, 2016
Una de las tecnologias mas efectivas para estudiar la Tierra ese sondeo remoto por medio de satelites que la orbita en el espacio. El satelite estudiado en este libro es denominado Libertad 2 y sera una mision de observacion de la tierra que aportara a ...
J. G. Llorente   +4 more
semanticscholar   +1 more source

Nueva estación terrena para seguimiento de satélites LEO [PDF]

open access: yes, 2008
Since earth stations for downloading data from LEO (Low Earth Orbit) satellites use large reflector antennas has a number of impairments in terms of cost and mechanical complexity; furthermore, reflector antennas can track only one satellite at a time ...
Haro Ariet, Leandro de   +3 more
core  

Microclimate refugia shape microclimatic niches and predict individual variability in post‐breeding migration in a partially migratory species

open access: yesJournal of Animal Ecology, Volume 94, Issue 12, Page 2527-2541, December 2025.
The niche is characterized along a gradient of temperature and microclimate refugia. Individuals in breeding areas with low microclimate refugia availability are more likely to cover larger distances to post‐breeding areas, increasing exposure to risks.
Rita F. Ramos   +4 more
wiley   +1 more source

Aplicaciones civiles del GPS [PDF]

open access: yes, 1995
Peer ...
Closa Soteras, Josep   +2 more
core   +3 more sources

Antena Compacta para Aplicaciones en Satélites de Reducido Tamaño

open access: yes, 2016
Este articulo presenta el desarrollo de una antena de parche en anillo circular cortocircuitado con polarizacion circular a izquierda (LHCP), con mejoramiento de la relacion axial mediante el uso de hendiduras (slits) y prolongaciones (stubs).
Carlos Arturo Suarez   +2 more
semanticscholar   +1 more source

Impact of Filtering Methods in the Assessment of COSMIC Electron Density Profiles Over the Brazilian Region: Excluding Profiles With Negative Values Is the Best Strategy?

open access: yesRadio Science, Volume 60, Issue 11, November 2025.
Abstract Global Navigation Satellite Systems radio occultation (RO) is a valuable and relevant source of information from the atmosphere. Many efforts have been made to provide methods of validation of RO profiles, however, no clear methodology for filtering the profiles from RO can be easily found.
Gabriel O. Jerez   +3 more
wiley   +1 more source

Geopolítica del Espacio Exterior [PDF]

open access: yesRevista UNISCI
En el campo militar hemos pasado a considerar el espacio como un dominio más, a añadir a los tradicionales (tierra, mar y aire, y, si acaso, el ciberespacio).
Josep Baqués Quesada
doaj  

Uso de Diferentes Sensores de Satélite na Discriminação de Alvos Naturais [PDF]

open access: yesAnuário do Instituto de Geociências, 2016
As particularidades nos instrumentos de sensoriamento remoto, mesmo quando possuem características semelhantes, torna as imagens geradas por estes, diferentes entre si.
Gustavo Ferreira de Souza   +7 more
doaj   +1 more source

Ciudades satélites periurbanas en Santiago de Chile: paradojas entre la satisfacción residencial y precariedad económica del periurbanita de clase media

open access: yes, 2015
La expansion periurbana de Santiago de Chile se relaciona al desarrollo de ciudades satelites privadas. Los proyectos construidos en la comuna de Lampa resultan interesantes de analizar dado que dan cuenta de la periurbanizacion de grupos socioeconomicos
César Cáceres Seguel
semanticscholar   +1 more source

The Role of Protected Areas in Combating Tropical Dry Forest Loss: Insights From Kirindy Mitea National Park, Madagascar

open access: yesBiotropica, Volume 57, Issue 6, November 2025.
Tropical dry forests face severe threats from deforestation, endangering both people and wildlife. This study examines the effectiveness of Kirindy Mitea National Park (KMNP) in Madagascar in preventing forest loss from 1993 to 2023 using satellite imagery.
Domenic Romanello   +4 more
wiley   +1 more source

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