Habitable-zone Exoplanet observatory (HabEx) baseline 4-m telescope design and predicted performance
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HabEx, Space Telescope, STOP Modeling↗
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Results for “Baseline”
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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A Space Beam Combiner for Long-Baseline Interferometry
An experimental beam combiner (BC) is being developed to support the space interferometry program at the Jet Propulsion Laboratory.
beam↗
Terrestrial Planet Finder coronagraph pointing control system design and evaluation for flight baseline 1.
The Terrestrial Planet Finder mission will search for Earth-like, extrasolar planets. The Coronagraph architecture option (TPF-C) will use contrast imaging to suppress the bright starlight in order to detect reflected visible light from the planet. To achieve the required contrast ratio stability of 2e-11, the payload pointing stability must be maintained to better than 4 milli-asec (1σ). The passive TPF-C pointing architecture uses a 3-stage control system combined with a 2- stage passive isolation system to achieve the required pointing accuracy. The active pointing stage includes reaction wheels used for coarse pointing of the spacecraft, a position controlled secondary mirror that provides intermediate alignment, and a Fine Guidance Mirror that provides fine steering control.
Dewell, Larry↗
Estimating Ocean Coherence Time Using Dual-Baseline Interferometric Synthetic Aperture Radar
A new technique for measuring the coherence time of the ocean surface at radar wavelengths has been developed and tested.
ocean↗
Navigation tracking with multiple baselines Part 1: high-level theory and system concepts
We describe a system concept that detects and locates dead and non-cooperatively spacecraft in the Geostationary Orbit (GEO). This can be done by making use of an existing GEO satellite with accurately known location as a reference, and/or by placing a dedicated “reference” spacecraft into an eccentric geosynchronous orbit over a region of interest (e.g. above North America).
Lee, Charles↗
ISS Safety Requirements Documents: International Space Station Program (Baseline)
The International Space Station (ISS) Program (ISSP) establishes the technical requirements for the safe design, development, test and operation of end items. End items include, but are not limited to: ISS hardware/elements (inclusive of Contractor Furnished Equipment (CFE) and Government Furnished Equipment (GFE)), payload/science hardware, Visiting Vehicles (VV), logistics, crew psychological support items, tools, spare instruments and assemblies, including waste. SSP 41000, System Specification for the International Space Station, provides performance and design requirements for ISS and contains many ISS level safety and design requirements that must be considered when developing end item specification documents for ISS end items. SSP 51721, ISS Safety Requirements, exists to further define the safety requirements to be applied to end items developed for ISS
ISS↗