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SPIE Proceedings, 2008
The Wide-field Infrared Survey Explorer mission will be executed by an earth-orbiting spacecraft carrying an infrared telescope cooled by a solid hydrogen cryostat. The purpose of the mission is to conduct an allsky survey at infrared wavelengths of 3.3, 4.7, 12 and 23 microns. The 7-month period of on-orbit operations includes one month of in-orbit
Beth Fabinsky +3 more
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The Wide-field Infrared Survey Explorer mission will be executed by an earth-orbiting spacecraft carrying an infrared telescope cooled by a solid hydrogen cryostat. The purpose of the mission is to conduct an allsky survey at infrared wavelengths of 3.3, 4.7, 12 and 23 microns. The 7-month period of on-orbit operations includes one month of in-orbit
Beth Fabinsky +3 more
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On-orbit calibration of HALOE detector linearity
Applied Optics, 2007The Halogen Occultation Experiment (HALOE) conducted satellite solar occultation measurements for 14 years ending on 21 November 2005. HALOE contained a calibration wheel, which included three neutral density filters that were used to examine response linearity through a combination of ground and on-orbit measurements.
Mark, Hervig +5 more
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In orbit calibrations of XMM-Newton telescopes
SPIE Proceedings, 2003We describe in-orbit measurements of the mirror vignetting in the XMM-Newton Observatory, using observations of SNR G21.5-09 with the EPIC imaging cameras. The instrument features that complicate these measurements are briefly described. We show the spatial and energy dependences of measured vignetting, outlining assumptions made in deriving the ...
Lumb, D. +6 more
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VIIRS on-orbit calibration activities and performance
2013 IEEE International Geoscience and Remote Sensing Symposium - IGARSS, 2013The Visible Infrared Imaging Radiometer Suite (VIIRS) onboard the Suomi National Polar-orbiting Partnership (S-NPP) spacecraft was launched on October 28, 2011. The S-NPP is orbiting the Earth in a sun-synchronous plane with nominal 13:30 local equatorial crossing time.
Xiaoxiong Xiong +9 more
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WindSat on-orbit warm load calibration
IEEE Transactions on Geoscience and Remote Sensing, 2006Postlaunch calibration of the WindSat polarimetric microwave radiometer indicates the presence of thermal gradients across the calibration warm load during some portions of the year. These gradients are caused by reflected solar illumination or eclipse and increase total calibration errors.
Elizabeth M. Twarog +4 more
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In-orbit performace and calibration of SMILES
35th International Conference on Infrared, Millimeter, and Terahertz Waves, 2010Superconducting Submillimeter-Wave Limb-Emission Sounder (SMILES) is a sensor for atmospheric observation at 640 GHz from the International Space Station. Since the launch in Sep. 2009, SMILES has been showing the excellent observation performance. The results of SMILES development are summarized.
Satoshi Ochiai +8 more
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MICROSCOPE On-ground and In-orbit Calibration
Space Science Reviews, 2010The MICROSCOPE mission, to be launched in 2011, will perform the test of the universality of free fall (Equivalence Principle) to an accuracy of 10−15. The payload consists of two sensors, each controlling the free fall of a pair of test masses: the first for the test of the Equivalence Principle (titanium/platinum), the second for performance ...
Vincent Josselin +3 more
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MODIS on-orbit calibration and characterization
Metrologia, 2003The MODIS Protoflight Model, launched on-board the NASA EOS Terra spacecraft on 18 December 1999, has been in operation for more than two years, providing the science community with calibrated data sets for global studies of the Earth's land, oceans and atmosphere.
X Xiong +4 more
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NOAA-20 VIIRS on-Orbit Calibration Improvements
IGARSS 2020 - 2020 IEEE International Geoscience and Remote Sensing Symposium, 2020The NOAA-20 (N-20) VIIRS has successfully operated for more than two years since its launch in November 2017. Shortly after completing its initial instrument check-outs and post-launch testing (PLT) activities, the N-20 VIIRS sensor data records (SDR) achieved the beta, provisional, and validated maturity status in January, February, and April 2018 ...
Xiaoxiong Xiong +12 more
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Journal of Guidance, Control, and Dynamics, 1996
The resulting force \(F_c\) from a set of thruster commands \(T_c\) is \(F_c=AT_c\), where the \(6\times 1\) vector \(F_c\) is composed of force and moment components, and the \(6\times n\) thruster configuration matrix \(A\) contains information on the output direction and magnitude of each thruster. The aim is to identify the coefficients of \(A\) by
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The resulting force \(F_c\) from a set of thruster commands \(T_c\) is \(F_c=AT_c\), where the \(6\times 1\) vector \(F_c\) is composed of force and moment components, and the \(6\times n\) thruster configuration matrix \(A\) contains information on the output direction and magnitude of each thruster. The aim is to identify the coefficients of \(A\) by
openaire +2 more sources