A Distributed Scene Simulation System for Earth Observation Satellite Mission Design and Analysis

2013 ◽  
Vol 444-445 ◽  
pp. 1810-1814
Author(s):  
Sheng Gang Liu ◽  
Shao Kai Wang ◽  
Chao Han
Keyword(s):  
Simulation System ◽  
Model Management ◽  
Mission Design ◽  
Satellite Mission ◽  
Scene Simulation ◽  
The Earth ◽  
Requirements Determination ◽  
Orbit Analysis ◽  
Remote Sensing Techniques ◽  
And Performance

The primary mission objective is gathering information of the Earth by on-board instruments using remote-sensing techniques, and sending the useful information back to the ground. Its mission design and analysis involves identification of critical requirements, determination of mission orbit, analysis of relationship between satellite, the Earth and the Sun. This paper proposed a new scene simulation system based on distributed architecture, which consisted of mission design subsystem, numerical simulation subsystem, scenario display subsystem and model management subsystem. The system can show the updated mission status and performance rapidly and efficiently after user modified the initial mission parameters. Practice has proven that it can help users to make a decision and judgment for the mission design, and improve their work efficiency.

‘Man Is Ill Because He Is Badly Constructed’: Artaud, Klossowski and Deleuze in Search for the Earth Inside

2011 ◽  
Vol 5 (1) ◽  
pp. 18-34 ◽  
Author(s):  
Rick Dolphijn
Keyword(s):  
Performance Art ◽  
Holy Spirit ◽  
The Body ◽  
Deleuze And Guattari ◽  
The Earth ◽  
The Holy Spirit ◽  
Life Itself ◽  
Body Without Organs ◽  
Ways Of Thinking ◽  
And Performance

Starting with Antonin Artaud's radio play To Have Done With The Judgement Of God, this article analyses the ways in which Artaud's idea of the body without organs links up with various of his writings on the body and bodily theatre and with Deleuze and Guattari's later development of his ideas. Using Klossowski (or Klossowski's Nietzsche) to explain how the dominance of dialogue equals the dominance of God, I go on to examine how the Son (the facialised body), the Father (Language) and the Holy Spirit (Subjectification), need to be warded off in order to revitalize the body, reuniting it with ‘the earth’ it has been separated from. Artaud's writings on Balinese dancing and the Tarahumaran people pave the way for the new body to appear. Reconstructing the body through bodily practices, through religion and above all through art, as Deleuze and Guattari suggest, we are introduced not only to new ways of thinking theatre and performance art, but to life itself.

scholarly journals King-Hele orbit theory for periodic orbit and attitude variations

2020 ◽  
Vol 501 (1) ◽  
pp. 1168-1187
Author(s):  
Vishal Ray ◽  
Daniel J Scheeres
Keyword(s):  
Drag Coefficient ◽  
Dynamic Parameter ◽  
Mission Design ◽  
Fourier Series Expansion ◽  
Satellite Orbits ◽  
Physical Interaction ◽  
Satellite Mission ◽  
Simplifying Assumptions ◽  
Time Variations ◽  
Specific Factors

ABSTRACT The analytical theory of satellite orbits in an atmosphere developed by King-Hele remains widely in use for satellite mission design because of its accurate approximation to numerical integration under simplifying assumptions. Over the course of six decades, modifications to the theory have addressed many of its weaknesses. However, in all subsequent modifications of the original theory, the assumption of a constant drag-coefficient has been retained. The drag-coefficient is a dynamic parameter that governs the physical interaction between the atmosphere and the satellite and depends on ambient as well as satellite specific factors. In this work, Fourier series expansion models of the drag-coefficient are incorporated in the original King-Hele theory to capture time-variations of the drag-coefficient in averaging integrals. The modified theory is validated through simulations that demonstrate the attained improvements in approximating numerical results over the original King-Hele formulation.

Feasibility and performance study for a space-borne 1645nm OPO for French-German satellite mission MERLIN

2014 ◽  
Author(s):  
Marie J. Livrozet ◽  
Florian Elsen ◽  
Jochen Wüppen ◽  
Jens Löhring ◽  
Christian Büdenbender ◽  
...  
Keyword(s):  
Performance Study ◽  
Satellite Mission ◽  
And Performance

scholarly journals Earth System Model Evaluation Tool (ESMValTool) v2.0 – an extended set of large-scale diagnostics for quasi-operational and comprehensive evaluation of Earth system models in CMIP

2020 ◽  
Vol 13 (7) ◽  
pp. 3383-3438 ◽  
Author(s):  
Veronika Eyring ◽  
Lisa Bock ◽  
Axel Lauer ◽  
Mattia Righi ◽  
Manuel Schlund ◽  
...  
Keyword(s):  
Model Evaluation ◽  
Large Scale ◽  
Performance Metrics ◽  
Earth System Model ◽  
System Model ◽  
Earth System ◽  
Evaluation Tool ◽  
The Earth ◽  
And Performance ◽  
Earth System Models

Abstract. The Earth System Model Evaluation Tool (ESMValTool) is a community diagnostics and performance metrics tool designed to improve comprehensive and routine evaluation of Earth system models (ESMs) participating in the Coupled Model Intercomparison Project (CMIP). It has undergone rapid development since the first release in 2016 and is now a well-tested tool that provides end-to-end provenance tracking to ensure reproducibility. It consists of (1) an easy-to-install, well-documented Python package providing the core functionalities (ESMValCore) that performs common preprocessing operations and (2) a diagnostic part that includes tailored diagnostics and performance metrics for specific scientific applications. Here we describe large-scale diagnostics of the second major release of the tool that supports the evaluation of ESMs participating in CMIP Phase 6 (CMIP6). ESMValTool v2.0 includes a large collection of diagnostics and performance metrics for atmospheric, oceanic, and terrestrial variables for the mean state, trends, and variability. ESMValTool v2.0 also successfully reproduces figures from the evaluation and projections chapters of the Intergovernmental Panel on Climate Change (IPCC) Fifth Assessment Report (AR5) and incorporates updates from targeted analysis packages, such as the NCAR Climate Variability Diagnostics Package for the evaluation of modes of variability, the Thermodynamic Diagnostic Tool (TheDiaTo) to evaluate the energetics of the climate system, as well as parts of AutoAssess that contains a mix of top–down performance metrics. The tool has been fully integrated into the Earth System Grid Federation (ESGF) infrastructure at the Deutsches Klimarechenzentrum (DKRZ) to provide evaluation results from CMIP6 model simulations shortly after the output is published to the CMIP archive. A result browser has been implemented that enables advanced monitoring of the evaluation results by a broad user community at much faster timescales than what was possible in CMIP5.

scholarly journals Using Remote Sensing Techniques to Improve Hydrological Predictions in a Rapidly Changing World

2021 ◽  
Vol 13 (19) ◽  
pp. 3865
Author(s):  
Yongqiang Zhang ◽  
Dongryeol Ryu ◽  
Donghai Zheng
Keyword(s):  
Remote Sensing ◽  
Anthropogenic Impacts ◽  
The Earth ◽  
Wide Range ◽  
Important Challenge ◽  
Flood Simulations ◽  
Remote Sensing Techniques ◽  
Evapotranspiration Estimation ◽  
Ecohydrological Processes ◽  
Changing World

Remotely sensed geophysical datasets are being produced at increasingly fast rates to monitor various aspects of the Earth system in a rapidly changing world. The efficient and innovative use of these datasets to understand hydrological processes in various climatic and vegetation regimes under anthropogenic impacts has become an important challenge, but with a wide range of research opportunities. The ten contributions in this Special Issue have addressed the following four research topics: (1) Evapotranspiration estimation; (2) rainfall monitoring and prediction; (3) flood simulations and predictions; and (4) monitoring of ecohydrological processes using remote sensing techniques. Moreover, the authors have provided broader discussions, on how to make the most out of the state-of-the-art remote sensing techniques to improve hydrological model simulations and predictions, to enhance their skills in reproducing processes for the fast-changing world.

scholarly journals Erratum to: The earth system model of intermediate complexity CLIMBER-3α. Part I: description and performance for present-day conditions

2009 ◽  
Vol 34 (1) ◽  
pp. 151-151
Author(s):  
Marisa Montoya ◽  
Alexa Griesel ◽  
Anders Levermann ◽  
Juliette Mignot ◽  
Matthias Hofmann ◽  
...  
Keyword(s):  
Earth System Model ◽  
System Model ◽  
Earth System ◽  
Intermediate Complexity ◽  
The Earth ◽  
And Performance

Global Networking and the Contrapuntal Node: The Project Mercury Earth Station in Zanzibar, 1959-64

2020 ◽  
Vol 11 (2020) ◽  
Author(s):  
Lisa Parks
Keyword(s):  
Satellite Mission ◽  
Earth Station ◽  
The Earth ◽  
The Us ◽  
Us Government

In 1960, the US government and British protectorate of Zanzibar signed an agreement that allowed US contractors working for the National Aeronautics and Space Administration (NASA) to build an earth station that would support Project Mercury, the first manned US satellite mission. This article focuses on the development of the Project Mercury earth station in Zanzibar during 1959-1964. To historicize the earth station’s establishment, the focus lies on the geopolitical and sociotechnical relations that resulted in the Zanzibar station.

Nonfunctional and Domain Requirements

2003 ◽  
pp. 415-430
Author(s):  
Len Asprey ◽  
Michael Middleton
Keyword(s):  
Information Technology ◽  
System Performance ◽  
System Development ◽  
Mass Storage ◽  
Development Environment ◽  
System Administration ◽  
Performance Requirements ◽  
Operating Environments ◽  
Requirements Determination ◽  
And Performance

In this chapter, we will examine requirements determination and analysis that may be useful for defining the nonfunctional and domain requirements for an IDCM solution, including system sizing, architecture, and performance requirements. We also include a discussion on domain requirements, such as those for information technology and system administration. Our objectives are to do the following: • Document the requirements for system sizing and mass storage. • Consider the types of requirements analysis that enterprises apply to help suppliers of IDCM solutions offer an architecture solution that may meet enterprise requirements. • Define system performance requirements with known caveats and assumptions. • Define the requirements for the IDCM system to integrate with enterprise desktop, server, and network operating environments. • Define the requirements for the system development environment. • Document the system administration requirements for the system.

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