Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Leif Harcke"'
Autor:
Paul B. Willis, Yonggyu Gim, Leif Harcke, Insoo Jun, A. Moussessian, Elaine Chapin, Scotty Allen, Donald D. Blankenship, Fei Chen, Laura Newlin, D. L. Kirchner, Michael McEachen, Kim M. Aaron
Publikováno v:
Advances in Space Research. 57:2013-2021
The potential for habitability puts stringent requirements on planetary protection for a mission to Europa. A long-wavelength radar sounder with a large antenna is one of the proposed instruments for a future Europa mission. The size and construction
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f2570a01f16ac44a18df02e348c54ba
https://doi.org/10.1016/j.asr.2015.08.015
https://doi.org/10.1016/j.asr.2015.08.015
Autor:
William M. Folkner, Luisa F. Zambrano-Marin, John K. Harmon, Patrick A. Taylor, Philip Perillat, Joseph G. McMichael, Agata Rozek, Linda A. Rodriguez-Ford, Martin A. Slade, Christopher Magri, Leif Harcke, Michael C. Nolan, Marina Brozovic, Robert A. Jacobson, A. A. Hine, James E. Richardson, Jon D. Giorgini, Steven J. Ostro, Lance A. M. Benner, Shantanu P. Naidu
Publikováno v:
The Astronomical Journal. 159:149
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::80c01a0cbcda93efd0e0abd020e52500
https://doi.org/10.3847/1538-3881/ab7023
https://doi.org/10.3847/1538-3881/ab7023
Autor:
Anthony Colaprete, M. A. Slade, Eric Gurrola, Brian Kennedy, David E. Smith, Barbara Wilson, Gregory A. Neumann, William Marshall, Scott Hensley, Leif Harcke, Zachary Moratto, Mark Shirley
Publikováno v:
Space Science Reviews. 167:71-92
The Lunar CRater Observations and Sensing Satellite (LCROSS) mission impacted a spent Centaur rocket stage into a permanently shadowed region near the lunar south pole. The Sheperding Spacecraft (SSC) separated \sim9 hours before impact and performed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::16fb1d1e719217970f715aaf131fb827
https://doi.org/10.1007/s11214-011-9765-0
https://doi.org/10.1007/s11214-011-9765-0
Autor:
Elaine Chapin, Yunling Lou, Ronald J. Muellerschoen, Thierry Michel, Scott Hensley, Michael Tope, Kean W. Tham, Joanne Shimada, Laila Moreira, Brian Hawkins, Leif Harcke
Publikováno v:
2015 IEEE Radar Conference (RadarCon).
The AirMOSS airborne SAR operates at UHF and produces fully polarimetric imagery [1]. The AirMOSS radar data are used to produce Root Zone Soil Moisture (RZSM) depth profiles. The absolute radiometric accuracy of the imagery, ideally of better than 0
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3e08c097d9ef2016038f6e4ad6d4ac85
https://doi.org/10.1109/radar.2015.7131276
https://doi.org/10.1109/radar.2015.7131276
Autor:
C. Le, Leif Harcke
Publikováno v:
2014 IEEE Radar Conference.
The NASA AirMOSS instrument is a P-band (UHF) fully polarimetric synthetic aperture radar designed to measure root-zone soil moisture. The radar currently operates in the 420-440 MHz band in North America. Narrowband communications signals are second
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::006423ad3b267501601068e7bca8c4ff
https://doi.org/10.1109/radar.2014.6875691
https://doi.org/10.1109/radar.2014.6875691
Autor:
Leif Harcke, Hirad Ghaemi, William L. Johnson, Richard Hodges, Neil Chamberlain, Rolando L. Jordan, Louise Veilleux, Yuhsyen Shen, James Hoffman, Louis Giersch, S. Shaffer, Patrick Wu, Paul A. Rosen, G. Sadowy, Behrouz Khayatian
Publikováno v:
2010 IEEE International Symposium on Phased Array Systems and Technology.
DESDynI is a mission being developed by NASA with radar and lidar instruments for Earth-orbit remote sensing. This paper focuses on the design of a large-aperture antenna for the radar instrument. The antenna comprises a deployable reflector antenna
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ace582e26727301ae2b9ec6d8254ebb
https://doi.org/10.1109/array.2010.5613339
https://doi.org/10.1109/array.2010.5613339
Autor:
Scott Hensley, Nicholas Marechal, Leif Harcke, Eric Gurrola, Sang-Ho Yun, Richard Dickinson, Lawrence Weintraub
Publikováno v:
2010 IEEE Radar Conference.
During the 2008–2009 year, the Goldstone Solar System Radar was upgraded to support radar mapping of the lunar poles at 4 m resolution. The finer resolution of the new system and the accompanying migration through resolution cells called for spotli
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc7ad90575c2e7440235c9483485aaed
https://doi.org/10.1109/radar.2010.5494426
https://doi.org/10.1109/radar.2010.5494426
Autor:
Leif Harcke
Publikováno v:
2009 IEEE Radar Conference.
A new era of precise-orbit determination for space-borne SAR permits time-domain backprojection of the data for accurate geocoded image production. In this work, time-domain backprojection is applied to Level 1.0 data from the ALOS/PALSAR instrument
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e4fd63e7d269685751dea034abc1372
https://doi.org/10.1109/radar.2009.4977031
https://doi.org/10.1109/radar.2009.4977031