Results 261 to 270 of about 3,019,942 (301)
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Volcano monitoring by satellite
Geology Today, 1989‘St Pierre, in the morning throbbing with life, thronged with people, is no more. Its ruins stretch before us, wrapped in their shroud of smoke and ashes, gloomy and silent, a city of the dead’. Thus was St Pierre described by the Vicar‐General of Martinique in the aftermath of the 8 May 1902 eruption of Mt Pelée.
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Landslide Mapping and Monitoring with Satellite Interferometry
2020The potential of multi-interferometric approach applied to the Sentinel-1 acquisitions for the analysis of slope instabilities is presented and discussed through two different landslides of very different nature. In the first case, Sentinel-1 data, systematically acquired with short revisiting time and promptly processed allows for the quick ...
Raspini F. +3 more
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Aerosol Monitoring by Satellite Horizon Scanning
Journal of Spacecraft and Rockets, 1971A newly adapted horizon-scanning technique can simultaneously monitor the vertical distribution of aerosols, as well as ozone and neutral atmospheric density, in the stratosphere and mesosphere for both meteorological and ecological application in a global satellite-monitoring program. The horizon-inversion technique permits the conversion of scattered
C. GRAY, H. MALCHOW, D. MERRITT, R. VAR
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Satellite clocks characterization and monitoring for global navigation satellite systems
2011 XXXth URSI General Assembly and Scientific Symposium, 2011In Global Navigation Satellite Systems (GNSS) the user's position is determined measuring the time of flight of the signals broadcast from satellites, which is proportional to the distance between the user and each satellite of the constellation. Time and frequency metrology has an essential role in satellite navigation systems: since a distance can be
A. CERNIGLIARO, SESIA, ILARIA
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10th International Conference on Digital Satellite Communications (ICDSC-10), 1995
To effectively manage a satellite communications network, it is necessary to monitor the performance of the carriers within that network. The carrier power, center frequency, and bandwidth of each carrier must be monitored to fully utilize the space segment resources.
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To effectively manage a satellite communications network, it is necessary to monitor the performance of the carriers within that network. The carrier power, center frequency, and bandwidth of each carrier must be monitored to fully utilize the space segment resources.
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Satellite monitoring of phenological events
International Journal of Biometeorology, 1976A technique used to investigate broad scale phenological events by means of repetitive satellite observations is described. The temporal sequence of leaf development and senescence of deciduous forest and crop canopies is characterized by changes in their reflectance of solar energy at several wavelength intervals.
W. W. Knapp, B. E. Dethier
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Satellite rainfall monitoring: An overview
Remote Sensing Reviews, 1994Abstract The rarity of rainfall, and its broad and varied significance, are affirmed, followed by a review of the problems of rainfall measurement and monitoring. The general state of knowledge of the global rainfall distribution is then discussed. Satellite methods for improving this knowledge are introduced by reference to the available satellites ...
Barrett, EC, Beaumont, MJS
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Collision monitoring within satellite clusters
IEEE Transactions on Control Systems Technology, 2005An autonomous online collision avoidance methodology for satellite clusters is developed and simulated. Contours of probability, defined using state uncertainty ellipsoids, are used to monitor and predict potential collisions over time. The methodology integrates three approaches in order to reduce online computation for autonomous operations while ...
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Satellite Techniques: New Perspectives for the Monitoring of Dams
2014Dam deformation detection, analysis, and monitoring represent a growing issue for a large part of commercial companies and research groups at national and international levels. Although dam failures are usually sudden, in the majority of cases it is possible to predict when structural damage conditions might become serious.
CORSETTI, MARCO +5 more
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On the aerosols monitoring by satellite observations
Clean Technologies and Environmental Policy, 2008Particulate matter is the general term used to identify a complex mixture of organic and inorganic particles (aerosols) that can be found suspended in the atmosphere in solid, liquid or both physical states. The presence of particulate of non-natural origin is linked to important climatic and environmental effects.
ORTORE, EMILIANO, FRANCIONE, VALERIO
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