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Integration of space weather into space situational awareness

Reeves, Geoffrey D

Proceedings of the Advanced Maui Optical and Space Surveillance ; September 13, 2010

TRN: US201211%%198

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  • Nhan đề:
    Integration of space weather into space situational awareness
  • Tác giả: Reeves, Geoffrey D
  • Chủ đề: Classical And Quantum Mechanics, General Physics Astrophysics, Cosmology And Astronomy Mathematical Methods And Computingarchitecture ; Distribution ; Dose Rates ; Electrons ; Goes Satellites ; Lanl ; Probability ; Radiation Belts ; Radiations ; Resolution ; Satellites ; Shielding ; Weather
  • Là 1 phần của: Proceedings of the Advanced Maui Optical and Space Surveillance ; September 13, 2010
  • Mô tả: Rapid assessment of space weather effects on satellites is a critical step in anomaly resolution and satellite threat assessment. That step, however, is often hindered by a number of factors including timely collection and delivery of space weather data and the inherent com plexity of space weather information. As part of a larger, integrated space situational awareness program, Los Alamos National Laboratory has developed prototype operational space weather tools that run in real time and present operators with customized, user-specific information. The Dynamic Radiation Environment Assimilation Model (DREAM) focuses on the penetrating radiation environment from natural or nuclear-produced radiation belts. The penetrating radiation environment is highly dynamic and highly orbit-dependent. Operators often must rely only on line plots of 2 MeV electron flux from the NOAA geosynchronous GOES satellites which is then assumed to be representative of the environment at the satellite of interest. DREAM uses data assimilation to produce a global, real-time, energy dependent specification. User tools are built around a distributed service oriented architecture (SOA) which will allow operators to select any satellite from the space catalog and examine the environment for that specific satellite and time of interest. Depending on the application operators may need to examine instantaneous dose rates and/or dose accumulated over various lengths of time. Further, different energy thresholds can be selected depending on the shielding on the satellite or instrument of interest. In order to rapidly assess the probability that space weather was the cause of anomalous operations, the current conditions can be compared against the historical distribution of radiation levels for that orbit. In the simplest operation a user would select a satellite and time of interest and immediately see if the environmental conditions were typical, elevated, or extreme based on how often those conditions occur in that orbit. This allows users to rapidly rule in or out environmental causes of anomalies. The same user interface can also allow users to drill down for more detailed quantitative information. DREAM can be run either from a distributed web-based user interface or as a stand-alone application for secure operations. In this paper we discuss the underlying structure of the DREAM model and demonstrate the user interface that we have developed . We also present some prototype data products and user interfaces for DREAM and discuss how space environment information can be seamlessly integrated into operational SSA systems. Conference.
  • Nơi xuất bản: Los Alamos National Laboratory (LANL)
  • Năm xuất bản: 2010
  • Ngôn ngữ: English
  • Số nhận dạng: TRN: US201211%%198

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