Bibliography

Mars Reconnaissance Orbiter observation of Comet C/2013 A1 (Siding Spring)

Tamppari, Leslie; Zurek, Richard; Cantor, Bruce; Delamere, WA; Egan, Anthony; Humm, David; Kass, David; McEwen, Alfred; McGovern, Andy; Phillips, Roger; , others;

Published by:       Published on:

YEAR: 2014     DOI:

MRO/CRISM observations of Phobos and Deimos

Murchie, SL; Choo, T; Humm, D; Rivkin, AS; Bibring, J-P; Langevin, Y; Gondet, B; Roush, TL; Duxbury, T; team, CRISM; , others;

Published by:       Published on:

YEAR: 2008     DOI:

GUVI: a hyperspectral imager for geospace

The Global Ultraviolet Imager (GUVI) is an imaging spectrometer on the NASA TIMED spacecraft which was launched on December 7, 2001. This instrument produces a far ultraviolet (FUV) data cube of spatial and spectral information at each step of a scan mirror - that scan mirror covers 140 deg in the cross track direction - a span that includes on limb. GUVI produces simultaneous monochromatic images at five "colors" (121.6 nm, 130.4 nm, 135.6 nm, and in broader bands at 140-150 nm and 165-180 nm) as its field of view is scanned from horizon to horizon. The instrument consists of a scan mirror feeding a parabolic telescope and Rowland circle spectrometer, with a wedge-and-strip detector at the focal plane. We describe the design, and give an overview of the environmental parameters that will be measured. GUVI is a modified version of the Special Sensor Ultraviolet Spectrographic Imager (SSUSI), which was launched on the DMSP Block 5D3 F16 satellite on October 18, 2003 and is slated to fly on DMSP satellites F17 through F20, as well. We present some results the science analysis of the GUVI data to demonstrate its relevance to the space weather community.

Paxton, L.; Christensen, Andrew; Morrison, Daniel; Wolven, Brian; Kil, Hyosub; Zhang, Yongliang; Ogorzalek, Bernard; Humm, David; Goldsten, John; DeMajistre, Robert; Meng, Ching-I.;

Published by:       Published on:

YEAR: 2004     DOI: 10.1117/12.579171

Advanced time-of-flight system-on-a-chip for remote sensing instruments

Paschalidis, Nicholas; Stamatopoulos, Nick; Karadamoglou, Kosta; Kottaras, George; Paschalidis, Vasilis; Sarris, Emmanuel; Mitchell, Donald; Humm, David; Paxton, Larry; McNutt, Ralph;

Published by:       Published on:

YEAR: 2003     DOI:

Initial observations with the Global Ultraviolet Imager (GUVI) in the NASA TIMED satellite mission

The Global Ultraviolet Imager (GUVI) instrument carried aboard the NASA TIMED satellite measures the spectral radiance of the Earth\textquoterights far ultraviolet airglow in the spectral region from 120 to 180 nm using a cross-track scanning spectrometer design. Continuous operation of the instrument provides images of the Earth\textquoterights disk and limb in five selectable spectral bands. Also, spectra at fixed scanning mirror position can be obtained. Initial results demonstrate the quantitative functionality of the instrument for studies of the Earth\textquoterights dayglow, aurora, and ionosphere. Moreover, through forward modeling, the abundance of the major constituents of the thermosphere, O, N₂, and O₂\ and thermospheric temperatures can be retrieved from observations of the limb radiance. Variations of the column O/N₂\ ratio can be deduced from sunlit disk observations. In regions of auroral precipitation not only can the aurora regions be geographically located and the auroral boundaries identified, but also the energy flux Q, the characteristic energy E_o, and a parameter f_o\ that scales the abundance of neutral atomic oxygen can be derived. Radiance due to radiative recombination in the ionospheric F region is evident from both dayside and nightside observations of the Earth\textquoterights limb and disk, respectively. Regions of depleted F-region electron density are evident in the tropical Appleton anomaly regions, associated with so-called ionospheric \textquotedblleftbubbles.\textquotedblright Access to the GUVI data is provided through the GUVI website\ www.timed.jhuapl.edu\guvi.

Christensen, AB; Paxton, LJ; Avery, S; Craven, J; Crowley, G; Humm, DC; Kil, H; Meier, RR; Meng, C-I; Morrison, D; , others;

Published by: Journal of Geophysical Research: Space Physics (1978\textendash2012)      Published on:

YEAR: 2003     DOI: 10.1029/2003JA009918

airglow; AURORA; ultraviolet; imaging; satellite; atmosphere

On-Orbit Characterization of the TIMED Global UltraViolet Imager (GUVI)

Wolven, BC; Paxton, LJ; Morrison, D; Humm, DC; Ogorzalek, BS; Kil, H; Zhang, Y; Meng, C; Christensen, A;

Published by:       Published on:

YEAR: 2002     DOI:

GUVI Instrument Performance: Validation and Evaluation of Ability to Meet Science Objectives

Paxton, LJ; Morrison, D; Wolven, BC; Humm, DC; Ogorzalek, BS; Zhang, Y; Kil, H; Meng, C; Christensen, AB;

Published by:       Published on:

YEAR: 2002     DOI:

Imaging Space Weather in the Far Ultraviolet with NASA TIMED GUVI

Paxton, L; Morrison, D; Zhang, Y; Kil, H; Wolven, B; Humm, D; Ogorzalek, B; Weiss, M; Wood, W; Barnes, R; , others;

Published by:       Published on:

YEAR: 2002     DOI:

On-Orbit Calibration and Characterization of the Global Ultraviolet Imager on TIMED

Paxton, L; Morrison, D; Wolven, B; Kil, H; Humm, D; Ogorzalek, B; Zhang, Y; Meng, C; Christensen, A;

Published by:       Published on:

YEAR: 2002     DOI:

Validation of the Environmental Data Products from the Global Ultraviolet Imager (GUVI) on NASA s TIMED Mission

Paxton, L; Morrison, D; Zhang, Y; Kil, H; Wolven, B; Humm, D; Ogorzalek, B; Weiss, M; Wood, W; Barnes, R; , others;

Published by:       Published on:

YEAR: 2002     DOI:

On-orbit calibration of the Special Sensor Ultraviolet Scanning Imager (SSUSI): a far-UV imaging spectrograph on DMSP F-16

Morrison, Daniel; Paxton, Larry; Humm, David; Wolven, Brian; Kil, Hyosub; Zhang, Yongliang; Ogorzalek, Bernard; Meng, Ching-I;

Published by:       Published on:

YEAR: 2002     DOI:

Validation of remote sensing products produced by the Special Sensor Ultraviolet Scanning Imager (SSUSI): a far UV-imaging spectrograph on DMSP F-16

Operational sensors are designed and intended to reliably produce the measurements needed to develop high-value key environmental parameters. The Special Sensor Ultraviolet Spectrographic Imager (SSUSI) is slated to fly on the next five Defense Meteorological Satellite Program launches (beginning with the launch of F16 in Fall 2001). SSUSI will routinely produce maps of ionospheric and upper atmospheric composition and image the aurora. In this paper we describe these products and our validation plans and the process through which we can assure our sponsors and data products users of the reliability and accuracy of these products.

Paxton, L.J.; Morrison, Daniel; Zhang, Yongliang; Kil, Hyosub; Wolven, Brian; Ogorzalek, Bernard; Humm, David; Meng, Ching-I.;

Published by:       Published on:

YEAR: 2002     DOI: 10.1117/12.454268

On-orbit calibration of the Special Sensor Ultraviolet Scanning Imager (SSUSI): a far-UV imaging spectrograph on DMSP F-16

The Special Sensor Ultraviolet Spectrographic Imager (SSUSI) is currently slated for launch on the Defense Meteorological Satellite Program (DMSP) F-16 in November 2001. This instrument consists of a scanning imaging spectrograph (SIS) whose field-of-view is scanned from horizon-to-horizon and a nadir-looking photometer system (NPS). It will provide operational information about the state of the atmosphere above 100 km. The unique problems incurred by the observational requirements (e.g. that we be able to make daytime and nighttime observations) and the design trade-offs needed to meet those requirements were strong drivers on calibration requirements. Those design trade-offs and the expectation that the instrument calibration will change appreciably in-flight have led to the requirement to perform a large instrument characterization in-flight using only natural sources. We focus, in this paper, on the flight characterization of the SSUSI instrument. This includes discussions of the stellar calibration approach for radiometric calibration, measurements of internally scattered light, sensitivity to the South Atlantic Anomaly, measurements of changing pulse height distributions, and measuring changing reflectivity of a nadir viewing scan mirror. In addition, the calibration of the NPS system using natural sources is addressed.

Morrison, D.; Paxton, L.J.; Humm, D.~C.; Wolven, B.; Kil, H.; Zhang, Y.; Ogorzalek, B.~S.; Meng, C.-I.;

Published by:       Published on:

YEAR: 2002     DOI:

On-orbit calibration of the Special Sensor Ultraviolet Scanning Imager (SSUSI): a far-UV imaging spectrograph on DMSP F-16 [4485-55]

Morrison, D; Paxton, LJ; Humm, DC; Wolven, B; Kil, H; Zhang, Y; Ogorzalek, BS; Meng, C-I;

Published by:       Published on:

YEAR: 2001     DOI:

Global ultraviolet imager (GUVI): Measuring composition and energy inputs for the NASA Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) mission

Paxton, Larry; Christensen, Andrew; Humm, David; Ogorzalek, Bernard; Pardoe, Thompson; Morrison, Daniel; Weiss, Michele; Crain, W; Lew, Patricia; Mabry, Dan; , others;

Published by:       Published on:

YEAR: 1999     DOI:

Performance of the wedge-and-strip microchannel plate detectors and electronics for the Global Ultraviolet Imager

Goldsten, John; Humm, David; Paxton, Larry; Ogorzalek, Bernard; Gary, Stephen; Hayes, John; Boldt, John;

Published by:       Published on:

YEAR: 1999     DOI:

Optical calibration of the global ultraviolet imager (GUVI)

Humm, David; Ogorzalek, Bernard; Elko, Michael; Morrison, Daniel; Paxton, Larry;

Published by:       Published on:

YEAR: 1999     DOI:

Performance of the wedge-andstrip microchannel plate detectors and electronics for the Global Ultraviolet Imager (GUVI)[3765-44]

Humm, JO; Paxton, LJ; Ogorzalek, BS; Gary, SA; , Hayes; Boldt, JD;

Published by: SPIE EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy X      Published on:

YEAR: 1999     DOI:

Global ultraviolet imager (GUVI): measuring composition and energy inputs for the NASA Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) mission

The Global Ultraviolet Imager (GUVI) on the NASA Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) mission will determine the variability in thermospheric composition, and its response to auroral inputs as well as measuring those inputs. GUVI is the result of twenty years of work in designing large field of regard far ultraviolet (110 - 180 nm) imagers for spaceflight. These systems are based on the concept of a horizon-to-horizon \textquoterightmonochromatic\textquoteright imager. The field of view of a spectrograph is swept from horizon to horizon using a scan mirror. The spectrograph uses a grating to spectrally disperse the light. A two-dimensional detector is used to record spatial and spectral information simultaneously. Images are obtained at discrete wavelengths without the use of filters; this reduces if not eliminates much of the concern about instrumental bandpasses, out-of-band rejection, and characterization of filter responses. Onboard processing is used to bin the spectral information into \textquoterightcolors\textquoteright thereby reducing the overall data rate required. The spectral bandpass is chosen to lie in the far ultraviolet so that the sunlit and dark aurora can be imaged. We review the instrument\textquoterights as delivered performance and the TIMED science requirements. TIMED will be launched May 18, 2000 and will inaugurate the Solar-Terrestrial Connections program at NASA.

Paxton, L.J.; Christensen, A.~B.; Humm, D.~C.; Ogorzalek, B.~S.; Pardoe, C.~T.; Morrison, D.; Weiss, M.~B.; Crain, W.; Lew, P.~H.; Mabry, D.~J.; Goldsten, J.~O.; Gary, S.~A.; Persons, D.~F.; Harold, M.~J.; Alvarez, E.~B.; Ercol, C.~J.; Strickland, D.~J.; Meng, C.-I.;

Published by:       Published on:

YEAR: 1999     DOI:

Design and performance of the Global Ultraviolet Imager (GUVI)

Humm, David; Paxton, Larry; Christensen, Andrew; Ogorzalek, Bernard; Pardoe, Thompson; Meng, Ching-I; Morrison, Daniel; Strickland, Douglas; Evans, Scott; Weiss, Michele; , others;

Published by:       Published on:

YEAR: 1998     DOI:

Design and performance of the Global Ultraviolet Imager (GUVI)

The Global UV imager (GUVI) is an imaging spectrometer on the NASA TIMED spacecraft. GUVI produces simultaneous monochromatic images at five \textquoterightcolors\textquoteright as its field of view is scanned from horizon to horizon. The instrument consists of a scan mirror feeding a parabolic telescope and Rowland circle spectrometer, with a wedge-and-strip detector at the focal plane. We describe the design, and give an overview of the environmental parameters that will be measured. GUVI is a modified version of the Special Sensor UV Spectrographic Imager (SSUSI), which will fly on the DMSP Block 5D3 satellites S-16 through S-20, We present some results from the optical calibration of the five SSUSI units.

Humm, D.~C.; Paxton, L.J.; Christensen, A.~B.; Ogorzalek, B.~S.; Pardoe, C.~T.; Meng, C.-I.; Morrison, D.; Strickland, D.~J.; Evans, J.~S.; Weiss, M.~B.; Crain, W.; Lew, P.~H.; Mabry, D.~J.; Goldsten, J.~O.; Gary, S.~A.; Peacock, K.; Persons, D.~F.; Harold, M.~J.; Alvarez, E.~B.; Ercol, C.~J.;

Published by:       Published on:

YEAR: 1998     DOI: