| 2012 |
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The Design of Space Scanning Mirror Control System Based on Optimal Tracking Controller
Control system of space scanning mirror has high requirement of scanning accuracy. The use of optimal tracking controller, instead of traditional PID controller, can effectively improve the scanning accuracy of space scanning mirror control system. State space model of the control system is established; the control system based on optimal tracking controller is designed; simulation experiment of the control system based on optimal tracking controller is carried out. The simulation result, in comparison with the system based on a PID controller, shows that the scanning mirror control system using optimal tracking controller instead of PID controller has higher scanning accuracy and faster response.
Sui, Wen; Song, Ke; Zhang, Pei;
Published by: Advanced Materials Research Published on: 07/2012
YEAR: 2012 DOI: 10.4028/www.scientific.net/AMR.546-54710.4028/www.scientific.net/AMR.546-547.790
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Space Weather Products from UV Imagers in Low Earth Orbit-Providing Key Information about the ITM Environment
Romeo, G; Paxton, LJ; Schaefer, RK; DeMajistre, R; Comberiate, J; Hsieh, SW; Miller, ES; Weiss, M; Wolven, BC; Zhang, Y;
Published by: Published on:
YEAR: 2012 DOI:
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Ultraviolet Remote Sensing of Nitric Oxide in the Thermosphere Using the TIMED/GUVI Instrument
DeMajistre, R; Wolven, BC; Paxton, LJ; Zhang, Y; Schaefer, RK; Bailey, SM; Yonker, JD; Thurairajah, B;
Published by: Published on:
YEAR: 2012 DOI:
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Intense polar rain electrons and associated field aligned currents
Zhang, Y; Wing, S; Paxton, LJ; Kil, H;
Published by: Published on:
YEAR: 2012 DOI:
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New and Improved GUVI Data Products for ITM Research
Schaefer, RK; Paxton, LJ; DeMajistre, R; Comberiate, J; Hsieh, SW; Miller, ES; Romeo, G; Weiss, M; Wolven, BC; Zhang, Y;
Published by: Published on:
YEAR: 2012 DOI:
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Reversed two-cell convection in the northern and southern hemisphere during northward IMF
Lu, G; Li, W; Raeder, J; Deng, Y; Rich, F; Ober, D; Zhang, Y; Paxton, L; Ruohoniemi, M; Hairston, M; , others;
Published by: Published on:
YEAR: 2012 DOI:
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The Source of Tidal Signatures in the TIMED/GUVI O/N2 Ratio
Kil, H; Lee, W; Shim, J; Paxton, LJ; Zhang, Y;
Published by: Published on:
YEAR: 2012 DOI:
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Persistent longitudinal features in the low-latitude ionosphere
Kil, H; Lee, WK; Kwak, Y-S; Oh, S-J; Paxton, LJ; Zhang, Y;
Published by: Journal of Geophysical Research: Space Physics Published on:
YEAR: 2012 DOI:
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The seasonal changes in the relationship between neutral composition and NmF2 from 2002 to 2007
Burns, AG; Solomon, SC; Wang, W; Qian, L; Zhang, Y; Paxton, LJ;
Published by: Published on:
YEAR: 2012 DOI:
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A07304 Reply to comment by DJ Strickland et al. on" Long-term variation in the thermosphere: TIMED/GUVI observations"(doi 10.1029/2012JA017594)
Zhang, Yongliang; Paxton, Larry;
Published by: Journal of Geophysical Research: Space Physics Published on:
YEAR: 2012 DOI:
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| 2011 |
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Evolution in space and time of the quasi-static acceleration potential of inverted-V aurora and its interaction with Alfv\ enic boundary processes
Marklund, G.; Sadeghi, S.; Cumnock, J.; Karlsson, T.; Lindqvist, P.-A.; Nilsson, H.; Masson, A.; Fazakerley, A.; Lucek, E.; Pickett, J.; Zhang, Y.;
Published by: Journal of Geophysical Research Published on: Jan-01-2011
YEAR: 2011 DOI: 10.1029/2011JA016537
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Longitudinal variations of nighttime electron auroral precipitation in both the Northern and Southern hemispheres from the TIMED global ultraviolet imager
Luan, Xiaoli; Wang, Wenbin; Burns, Alan; Solomon, Stanley; Zhang, Yongliang; Paxton, L.; Xu, JiYao;
Published by: Journal of Geophysical Research Published on: Jan-01-2011
YEAR: 2011 DOI: 10.1029/2010JA016051
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Long-term variation in the thermosphere: TIMED/GUVI observations
Zhang, Y.; Paxton, L.;
Published by: Journal of Geophysical Research Published on: Jan-01-2011
YEAR: 2011 DOI: 10.1029/2010JA016337
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Nightside polar rain aurora boundary gap and its applications for magnetotail reconnection
Zhang, Yongliang; Paxton, L.; Kil, Hyosub;
Published by: Journal of Geophysical Research Published on: Jan-01-2011
YEAR: 2011 DOI: 10.1029/2011JA016884
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O and N 2 disturbances in the F region during the 20 November 2003 storm seen from TIMED/GUVI
Kil, H.; Kwak, Y.-S.; Paxton, L.; Meier, R.; Zhang, Y.;
Published by: Journal of Geophysical Research Published on: Jan-01-2011
YEAR: 2011 DOI: 10.1029/2010JA016227
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Reversed two-cell convection in the Northern and Southern hemispheres during northward interplanetary magnetic field
Lu, G.; Li, W.; Raeder, J.; Deng, Y.; Rich, F.; Ober, D.; Zhang, Y.; Paxton, L.; Ruohoniemi, J.; Hairston, M.; Newell, P.;
Published by: Journal of Geophysical Research Published on: Jan-01-2011
YEAR: 2011 DOI: 10.1029/2011JA017043
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The source of the longitudinal asymmetry in the ionospheric tidal structure
Kil, H.; Kwak, Y.-S.; Oh, S.-J.; Talaat, E.; Paxton, L.; Zhang, Y.;
Published by: Journal of Geophysical Research Published on: Jan-01-2011
YEAR: 2011 DOI: 10.1029/2011JA016781
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Space Technology 5 multipoint observations of transpolar arc--related field-aligned currents
Cumnock, J.; Le, G.; Imber, S.; Slavin, J.; Zhang, Y.; Paxton, L.;
Published by: Journal of Geophysical Research Published on: Jan-01-2011
YEAR: 2011 DOI: 10.1029/2010JA015912
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Temporal and spatial components in the storm-time ionospheric disturbances
Kil, Hyosub; Paxton, L.; Kim, Khan-Hyuk; Park, Sarah; Zhang, Yongliang; Oh, Seung-Jun;
Published by: Journal of Geophysical Research Published on: Jan-01-2011
YEAR: 2011 DOI: 10.1029/2011JA016750
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TIMED/GUVI observation of solar illumination effect on auroral energy deposition
Liou, K.; Zhang, Y.-L.; Newell, P.; Paxton, L.; Carbary, J.;
Published by: Journal of Geophysical Research Published on: Jan-01-2011
YEAR: 2011 DOI: 10.1029/2010JA016402
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Wave-driven variability in the ionosphere-thermosphere-mesosphere system from TIMED observations: What contributes to the "wave 4"?
Oberheide, J.; Forbes, J.; Zhang, X.; Bruinsma, S.;
Published by: Journal of Geophysical Research Published on: Jan-01-2011
YEAR: 2011 DOI: 10.1029/2010JA015911
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Ten Years of GUVI Data: The Updated GUVI Far UV Data Archive
Wolven, B; Schaefer, R; Paxton, L; Holland, D; Zhang, Y; Christensen, A;
Published by: Published on:
YEAR: 2011 DOI:
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Empirical Relationship Between LBH Auroral Emissions and Particle Precipitation
Hsieh, SW; Sotirelis, T; Korth, H; Zhang, Y; Paxton, LJ;
Published by: Published on:
YEAR: 2011 DOI:
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Longitudinal asymmetry in the crest intensity of the ionospheric tidal structure
Kil, H; Paxton, LJ; Zhang, Y; Kwak, Y; Oh, S;
Published by: Published on:
YEAR: 2011 DOI:
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O and N2 disturbances in the F region during the 20 November 2003 storm seen from TIMED/GUVI
Kil, H; Kwak, Y-S; Paxton, LJ; Meier, RR; Zhang, Y;
Published by: Journal of Geophysical Research: Space Physics Published on:
YEAR: 2011 DOI:
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Periodic Variations in Aurora, Thermosphere and Ionosphere: Solar Cycle Dependence
Zhang, Y; Paxton, LJ; Kil, H;
Published by: Published on:
YEAR: 2011 DOI:
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Mutual Neutralization of Atomic Oxygen Ions Over the Course of the Solar Cycle and Its Effects on Ionospheric Remote Sensing
Comberiate, J; DeMajistre, R; Schaefer, RK; Zhang, Y; Paxton, LJ;
Published by: Published on:
YEAR: 2011 DOI:
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| 2010 |
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Near real-time assimilation in IRI of auroral peak E-region density and equatorward boundary
Zhang, Yongliang; Paxton, L.; Bilitza, Dieter; Doe, Rick;
Published by: Advances in Space Research Published on: Jan-10-2010
YEAR: 2010 DOI: 10.1016/j.asr.2010.06.029
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Thermospheric composition variations due to nonmigrating tides and their effect on ionosphere
Zhang, Yongliang; England, Scott; Paxton, L.;
Published by: Geophysical Research Letters Published on: Jan-09-2010
YEAR: 2010 DOI: 10.1029/2010GL044313
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Auroral and thermospheric response to the 9 day periodic variations in the dayside reconnection rate in 2005
Zhang, Yongliang; Paxton, L.; Morrison, Daniel;
Published by: Space Weather Published on: Jan-01-2010
YEAR: 2010 DOI: 10.1029/2009SW000559
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Correlation between the ionospheric WN4 signature and the upper atmospheric DE3 tide
Wan, W.; Xiong, J.; Ren, Z.; Liu, L.; Zhang, M.-L.; Ding, F.; Ning, B.; Zhao, B.; Yue, X.;
Published by: Journal of Geophysical Research Published on: Jan-01-2010
YEAR: 2010 DOI: 10.1029/2010JA015527
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Ionospheric response to the initial phase of geomagnetic storms: Common features
Wang, Wenbin; Lei, Jiuhou; Burns, Alan; Solomon, Stanley; Wiltberger, Michael; Xu, JiYao; Zhang, Yongliang; Paxton, L.; Coster, Anthea;
Published by: Journal of Geophysical Research Published on: Jan-01-2010
YEAR: 2010 DOI: 10.1029/2009JA014461
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Seasonal and hemispheric variations of the total auroral precipitation energy flux from TIMED/GUVI
Luan, Xiaoli; Wang, Wenbin; Burns, Alan; Solomon, Stanley; Zhang, Yongliang; Paxton, L.;
Published by: Journal of Geophysical Research Published on: Jan-01-2010
YEAR: 2010 DOI: 10.1029/2009JA015063
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Examining the response of the lower thermosphere to solar activity and geomagnetic disturbances
Paxton, LJ; Zhang, Y; , others;
Published by: Published on:
YEAR: 2010 DOI:
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Enhanced UV Data Products-Observing the Ionosphere in Greater Fidelity
Wolven, BC; Paxton, LJ; Comberiate, J; Hsieh, SW; , Nylund; Schaefer, RK; Selby, C; Smith, D; Weiss, M; Zhang, Y;
Published by: Published on:
YEAR: 2010 DOI:
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A multi-point perspective on the formation of polar cap arcs: kinetic modeling and observations by Cluster and TIMED
de Keyser, JM; Maggiolo, R; Echim, M; Simon, C; Zhang, Y; Trotignon, J;
Published by: Published on:
YEAR: 2010 DOI:
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On and N2 disturbances in the F region during the 20 November 2003 storm seen from TIMED/GUVI
Kil, Hyosub; Paxton, Larry; Kwak, Young-Sil; Meier, Robert; Zhang, Yongliang;
Published by: 38th COSPAR Scientific Assembly Published on:
YEAR: 2010 DOI:
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Assimilation of auroral peak E-region density and equatorward boundary in IRI
Zhang, Yongliang; Paxton, Larry; Bilitza, Dieter;
Published by: 38th COSPAR Scientific Assembly Published on:
YEAR: 2010 DOI:
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The ground calibration of far ultraviolet scanning imaging spectrometer (FUSIS)
The far ultraviolet scanning imaging spectrometer (FUSIS) is used to measure the composition and distribution of the main molecules and atoms in the Earth s upper atmosphere. It is an important instrument in investigation of the physical and chemical processes in the Earth s upper atmosphere. FUSIS works between 120nm to 180nm, its spectral resolution is better than 1.0nm and its spatial resolution is 8 pixels. This paper describes a kind of ground calibration method and facility of FUSIS. The FUV light is invisible, so all works must be done in high vacuum.
Wu, Yan; Tang, Yi; Liu, Jianpeng; Zhang, Zhige; Ni, Guoqiang;
Published by: Published on:
YEAR: 2010 DOI: 10.1117/12.870475
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Night-side mid-latitude 135.6 nm intensity enhancements: TIMED/GUVI observations
Zhang, Y; Paxton, LJ; Talaat, ER; Kil, H;
Published by: Published on:
YEAR: 2010 DOI:
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Partition and Variability of the Magnetospheric Energy Input into the Polar Ionosphere
Zhang, Yongliang; Paxton, Larry;
Published by: To address questions on partition and variability of the magnetospheric energy input to the polar ionosphere, their dissipation, and their relation to the solar wind condition with multi-satellite and ground-chain measurements Published on:
YEAR: 2010 DOI:
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| 2009 |
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Variability study of the crest-to-trough TEC ratio of the equatorial ionization anomaly around 120\textdegreeE longitude
Zhang, Man-Lian; Wan, Weixing; Liu, Libo; Ning, Baiqi;
Published by: Advances in Space Research Published on: Jan-06-2009
YEAR: 2009 DOI: 10.1016/j.asr.2008.09.031
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Unusual declining phase of solar cycle 23: Weak semi-annual variations of auroral hemispheric power and geomagnetic activity
Luan, Xiaoli; Wang, Wenbin; Burns, Alan; Solomon, Stanley; Zhang, Yongliang; Paxton, L.;
Published by: Geophysical Research Letters Published on: Jan-01-2009
YEAR: 2009 DOI: 10.1029/2009GL040825
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Behavior of the Ionosphere and Thermosphere at Solar Minimum: Data and Model Comparisons and Analysis
Paxton, LJ; Zhang, Y; Kil, H; Schaefer, RK; Comberiate, J; Christensen, AB;
Published by: Published on:
YEAR: 2009 DOI:
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Variability study of the crest-to-trough TEC ratio of the equatorial ionization anomaly around 120 E longitude
Zhang, Man-Lian; Wan, Weixing; Liu, Libo; Ning, Baiqi;
Published by: Advances in Space Research Published on:
YEAR: 2009 DOI:
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The effect of non-migrating tides on the morphology of the equatorial ionospheric anomaly: seasonal variability
England, Scott; Zhang, Xiaoli; Immel, Thomas; Forbes, Jeffrey; DeMajistre, Robert;
Published by: Earth Planets Space Published on:
YEAR: 2009 DOI:
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Upward propagating tidal effects across the E-and F-regions of the ionosphere
Immel, Thomas; England, Scott; Zhang, Xiaoli; Forbes, Jeffrey; DeMajistre, Robert;
Published by: Earth, planets and space Published on:
YEAR: 2009 DOI:
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Ionospheric control of auroral occurrence
Liou, Kan; Zhang, Yongliang; Newell, Patrick; Paxton, Larry;
Published by: Published on:
YEAR: 2009 DOI:
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Global observations of the equatorial ionosphere by UV remote sensing
Paxton, Larry; Comberiate, Joseph; Kil, Hyosub; Schaefer, Robert; Wolven, Brian; Zhang, Yongliang; Morrison, Daniel;
Published by: Published on:
YEAR: 2009 DOI:
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Does the polar cap disappear under an extended strong northward IMF?
Zhang, Yongliang; Paxton, Larry; Newell, Patrick; Meng, Ching-I;
Published by: Journal of atmospheric and solar-terrestrial physics Published on:
YEAR: 2009 DOI:
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