Now showing items 11-20 of 86
Spacecraft surface charging induced by severe environments at geosynchronous orbit
(SpringerWiley Periodicals, Inc., 2018-01)
Severe and extreme surface charging on geosynchronous spacecraft is examined through the analysis of 16Â years of data from particles detectors onâ board the Los Alamos National Laboratory spacecraft. Analysis shows that ...
Miniature probe for allâ optical double gradientâ index lenses photoacoustic microscopy
(WILEYâ VCH Verlag GmbH & Co. KGaA, 2018-12)
Midlatitude Plasma Bubbles Over China and Adjacent Areas During a Magnetic Storm on 8 September 2017
(Wiley Periodicals, Inc., 2018-03)
This paper presents observations of postsunset super plasma bubbles over China and adjacent areas during the second main phase of a storm on 8 September 2017. The signatures of the plasma bubbles can be seen or deduced ...
Task selection for radar resource management in dynamic environments
(The Institution of Engineering and TechnologyWiley Periodicals, Inc., 2018-01)
An Ionosphere Specification Technique Based on Data Ingestion Algorithm and Empirical Orthogonal Function Analysis Method
(DarmstadtWiley Periodicals, Inc., 2018-09)
A data ingestion method in reproducing ionospheric electron density and total electron content (TEC) was developed to incorporate TEC products from the Madrigal Database into the NeQuick 2 model. The method is based on ...
Measures of Model Performance Based On the Log Accuracy Ratio
(John Wiley, 2018-01)
Quantitative assessment of modeling and forecasting of continuous quantities uses a variety of approaches. We review existing literature describing metrics for forecast accuracy and bias, concentrating on those based on ...
Warm-Starting Fixed-Point Based Control Synthesis
(2018-12-12)
In this work we propose a patching algorithm to incrementally modify controllers, synthesized to satisfy a temporal logic formula, when some of the control actions become unavailable. The main idea of the proposed algorithm ...
Effects of Uncertainties in the Atmospheric Density on the Probability of Collision Between Space Objects
(Aerospace PressWiley Periodicals, Inc., 2018-05)
The rapid increase of the number of objects in orbit around the Earth poses a serious threat to operational spacecraft and astronauts. In order to effectively avoid collisions, mission operators need to assess the risk of ...
Update on the Worsening Particle Radiation Environment Observed by CRaTER and Implications for Future Human Deep‐Space Exploration
(Wiley Periodicals, Inc.National Academy Press The National Academies Press, 2018-03)
Over the last decade, the solar wind has exhibited low densities and magnetic field strengths, representing anomalous states that have never been observed during the space age. As discussed by Schwadron, Blake, et al. ...
The SPASE Data Model: A Metadata Standard for Registering, Finding, Accessing, and Using Heliophysics Data Obtained From Observations and Modeling
(The National Academies PressWiley Periodicals, Inc., 2018-12)
The Space Physics Archive Search and Extract Consortium has developed and implemented the SPASE Data Model that provides a common language for registering a wide range of Heliophysics data and other products. The Data Model ...