منابع مشابه
Scheduling a constellation of agile earth observation satellites with preemption
In this paper, we consider a scheduling problem for a set of agile Earth observation satellites for scanning different parts of the Earth’s surface. We assume that preemption is allowed to prevent repetitive images and develop four different preemption policies. Scheduling is done for the imaging time window and transmission time domain to the Earth stations as well. The value of each picture ...
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O bservational systems in atmospheric science, operating from surface, manned aircraft, or satellite platforms, have advanced dramatically in the last 30 years. However, for observational systems to continue to advance, we must be open to revolutionary new possibilities just as our forebears were. Many new missions are very expensive and have had their development slowed. Now may be the opportu...
متن کاملFuture Intelligent Earth Observing Satellites
This paper presents a simulated design of an envisioned future intelligent Earth observing satellite system (FIEOS). The proposed system is a space-based architecture for dynamic and comprehensive on-board integration of Earth observing sensors, data processors and communication systems. It is intended to enable simultaneous, global measurements and timely analyses of Earth’s environment for a ...
متن کاملScheduling Earth Observing Satellites with Evolutionary Algorithms
We hypothesize that evolutionary algorithms can effectively schedule coordinated fleets of Earth observing satellites. The constraints are complex and the bottlenecks are not well understood, a condition where evolutionary algorithms are often effective. This is, in part, because evolutionary algorithms require only that one can represent solutions, modify solutions, and evaluate solution fitne...
متن کاملEarth-Observation Applications of Navigation Satellites
Introduction The development of Earth-observation techniques based on the use of navigation signals can be traced back to the use of GPS in geodetic applications to provide astonishing precision, such as the determination to within a few centimetres of the relative positions of points on the Earth’s surface separated by several thousand kilometres. This ultra-precise positioning of fixed GPS re...
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ژورنال
عنوان ژورنال: IALLT Journal of Language Learning Technologies
سال: 2019
ISSN: 1050-0049,1050-0049
DOI: 10.17161/iallt.v14i2.9050