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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Operations Coordination Plan Status
This presentation provides the history of the Constellation Operations Coordination Plan and a summary of the changes since the previous version was published in 2011.
Aqua Spring 2016 IAM Campaign and No-Slew DMU Results
Status of the Spring 2016 Aqua and Aura IAM Series results.
Constellation Coordination System (CCS) Status
Operational Status update of the Constellation Coordination System (CCS) releases and developmental status of future releases.
EOS Terra: Mission Status at Earth Science Constellation MOWG Meeting @ Boulder, CO
This presentation describe the present status and future plans for operating the Terra Spacecraft. Specific details are providing about the constellation exit plan and NASA HQ decision process.
Earth Observation System Flight Dynamics System Covariance Realism
This presentation applies a covariance realism technique to the National Aeronautics and Space Administration (NASA) Earth Observation System (EOS) Aqua and Aura spacecraft based on inferential statistics. The technique consists of three parts: collection calculation of definitive state estimates through orbit determination, calculation of covariance realism test statistics at each covariance propagation point, and proper assessment of those test statistics.
The Legacy and Future of the International Earth Science Constellation (ESC)
The most recent Decadal Survey placed high value on continuing constellation science. The ESC has evolved by seeing new missions joining and old missions retiring. Most recently, GCOM-W1, Landsat-8, and OCO-2 joined during 2012-2014. Landsat-9 is set to join in 2020. Each new mission provides new and improved suite of sensors. The new sensors also benefit both from the multitude of other existing on-orbit sensors as well as from the long-term cross-calibrated climate observations from the sensors that preceded them. At the same time, existing missions leave the constellation due to low fuel reserves or aging spacecraft subsystems. For example, CloudSat and CALIPSO left the ESC orbits in 2018, although they plan to continue making coordinated science observations at their new lower altitudes. This ESC evolution is expected to continue and this paper will discuss the opportunities for other new missions to join the ESC.