Microwave Radiometer Instability Due to Infrequent Calibration.

David K. Walker

Kevin J. Coakley Jolene D. Splett David K. Walker Mustafa Aksoy Paul E. Racette Microwave Radiometer Instability Due to Infrequent Calibration. 3281-3290 2020 13 IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. https://doi.org/10.1109/JSTARS.2020.2984004 db/journals/staeors/staeors13.html#CoakleySWAR20

Derek A. Houtz William J. Emery Dazhen Gu David K. Walker Brightness Temperature Calculation and Uncertainty Propagation for Conical Microwave Blackbody Targets. 7246-7256 2018 56 IEEE Trans. Geosci. Remote. Sens. 12 https://doi.org/10.1109/TGRS.2018.2849647 https://www.wikidata.org/entity/Q129501717 db/journals/tgrs/tgrs56.html#HoutzEGW18

Derek A. Houtz William J. Emery Dazhen Gu Karl Jacob Axel Murk David K. Walker Richard J. Wylde Electromagnetic Design and Performance of a Conical Microwave Blackbody Target for Radiometer Calibration. 4586-4596 2017 55 IEEE Trans. Geosci. Remote. Sens. 8 https://doi.org/10.1109/TGRS.2017.2694319 db/journals/tgrs/tgrs55.html#HoutzEGJMWW17

Derek A. Houtz David K. Walker Dazhen Gu Simulations to characterize a passive microwave blackbody design. 3485-3488 2015 IGARSS https://doi.org/10.1109/IGARSS.2015.7326571 conf/igarss/2015 db/conf/igarss/igarss2015.html#HoutzWG15

Dazhen Gu James Randa David K. Walker A Geometric Error Model for Misaligned Calibration Target in Passive Microwave Remote-Sensing Systems. 1597-1601 2013 10 IEEE Geosci. Remote. Sens. Lett. 6 https://doi.org/10.1109/LGRS.2013.2262471 db/journals/lgrs/lgrs10.html#GuRW13

Derek Houtz David K. Walker A finite element thermal simulation of a microwave blackbody calibration target. 394-397 2013 IGARSS https://doi.org/10.1109/IGARSS.2013.6721175 conf/igarss/2013 db/conf/igarss/igarss2013.html#HoutzW13

Dazhen Gu Derek Houtz James Randa David K. Walker Extraction of Illumination Efficiency by Solely Radiometric Measurements for Improved Brightness-Temperature Characterization of Microwave Blackbody Target. 4575-4583 2012 50 IEEE Trans. Geosci. Remote. Sens. 11 https://doi.org/10.1109/TGRS.2012.2193890 db/journals/tgrs/tgrs50.html#GuHRW12

Dazhen Gu Derek Houtz James Randa David K. Walker Realization of a standard radiometer for microwave brightness-temperature measurements traceable to fundamental noise standards. 2941-2944 2012 IGARSS https://doi.org/10.1109/IGARSS.2012.6350709 conf/igarss/2012 db/conf/igarss/igarss2012.html#GuHRW12 Derek Houtz Dazhen Gu David K. Walker James Randa An investigation of antenna characterization techniques in microwave remote sensing calibration. 4660-4663 2012 IGARSS https://doi.org/10.1109/IGARSS.2012.6350426 conf/igarss/2012 db/conf/igarss/igarss2012.html#HoutzGWR12

Dazhen Gu Derek Houtz James Randa David K. Walker Reflectivity Study of Microwave Blackbody Target. 3443-3451 2011 49 IEEE Trans. Geosci. Remote. Sens. 9 https://doi.org/10.1109/TGRS.2011.2125975 db/journals/tgrs/tgrs49.html#GuHRW11

James Randa Joel Dunsmore Dazhen Gu Ken Wong David K. Walker Roger D. Pollard Verification of Noise-Parameter Measurements and Uncertainties. 3685-3693 2011 60 IEEE Trans. Instrum. Meas. 11 https://doi.org/10.1109/TIM.2011.2138270 db/journals/tim/tim60.html#RandaDGWWP11

Dazhen Gu Derek Houtz James Randa David K. Walker Extraction of reflectivity from microwave blackbody target with free-space measurements. 3847-3850 2011 IGARSS https://doi.org/10.1109/IGARSS.2011.6050070 conf/igarss/2011 db/conf/igarss/igarss2011.html#GuHRW11 Dazhen Gu Amanda E. Cox Derek Houtz David K. Walker James Randa Robert L. Billinger Reflectivity studies of passive microwave calibration targets and absorptive materials. 570-573 2010 conf/igarss/2010 IGARSS https://doi.org/10.1109/IGARSS.2010.5653688 db/conf/igarss/igarss2010.html#GuCHWRB10 David K. Walker Dazhen Gu Katherine MacReynolds Randy Direen James Randa Amanda E. Cox Derek Houtz Robert L. Billinger Comparison of microwave black-body target radiometric measurements. 4278-4281 2010 conf/igarss/2010 IGARSS https://doi.org/10.1109/IGARSS.2010.5652481 db/conf/igarss/igarss2010.html#WalkerGMDRCHB10

Dazhen Gu David K. Walker James Randa Variable Termination Unit for Noise-Parameter Measurement. 1072-1077 2009 58 IEEE Trans. Instrum. Meas. 4 https://doi.org/10.1109/TIM.2008.2007055 db/journals/tim/tim58.html#GuWR09

James Randa David K. Walker On-Wafer Measurement of Transistor Noise Parameters at NIST. 551-554 2007 56 IEEE Trans. Instrum. Meas. 2 https://doi.org/10.1109/TIM.2007.891145 db/journals/tim/tim56.html#RandaW07

James Randa David K. Walker Amanda E. Cox Robert L. Billinger Errors resulting from the reflectivity of calibration targets. 50-58 2005 43 IEEE Trans. Geosci. Remote. Sens. 1 https://doi.org/10.1109/TGRS.2004.839809 db/journals/tgrs/tgrs43.html#RandaWCB05

Wojciech Wiatr David K. Walker Systematic errors of noise parameter determination caused by imperfect source impedance measurement. 696-700 2005 54 IEEE Trans. Instrum. Meas. 2 https://doi.org/10.1109/TIM.2005.843534 db/journals/tim/tim54.html#WiatrW05

James Randa Amanda E. Cox David K. Walker Michael H. Francis Jeffrey R. Guerrieri Katherine MacReynolds Standard radiometers and targets for microwave remote sensing. 2004 IGARSS https://doi.org/10.1109/IGARSS.2004.1369125 conf/igarss/2004 db/conf/igarss/igarss2004.html#RandaCWFGM04 James Randa David K. Walker Amanda E. Cox Robert L. Billinger Errors due to the reflectivity of calibration targets. 1715-1718 2004 IGARSS https://doi.org/10.1109/IGARSS.2004.1370662 conf/igarss/2004 db/conf/igarss/igarss2004.html#RandaWCB04 David K. Walker Kevin J. Coakley Jolene D. Splett Nonlinear modeling of tunnel diode detectors. 3969-3972 2004 IGARSS https://doi.org/10.1109/IGARSS.2004.1369997 conf/igarss/2004 db/conf/igarss/igarss2004.html#WalkerCS04 David K. Walker Hamid Chahryar James W. Moore David S. Tucker Computer science lecture room demonstration experiment in event counting (abstract). 408 1994 conf/sigcse/1994 SIGCSE https://doi.org/10.1145/191029.191327 https://doi.org/10.1145/191033.191327 db/conf/sigcse/sigcse1994.html#WalkerCMT94 David K. Walker Hamid Chahryar Jamil Chaudri Akhtar Lodgher Elias Majdalani David S. Tucker Lectureroom demonstration of serial data communications. 264-267 1992 conf/sigcse/1992 SIGCSE https://doi.org/10.1145/134510.134563 https://doi.org/10.1145/135250.134563 db/conf/sigcse/sigcse1992.html#WalkerCCLMT92

David K. Walker David S. Tucker Managing hard-disk PCs in the introductory laboratory. 37-40 1991 23 ACM SIGCSE Bull. 4 https://doi.org/10.1145/122697.122703 db/journals/sigcse/sigcse23.html#WalkerT91

Mustafa Aksoy Robert L. Billinger Hamid Chahryar Jamil Chaudri Kevin J. Coakley Amanda E. Cox Randy Direen Joel Dunsmore William J. Emery Michael H. Francis Dazhen Gu Jeffrey R. Guerrieri Derek HoutzDerek A. Houtz Karl Jacob Akhtar Lodgher Katherine MacReynolds Elias Majdalani James W. Moore Axel Murk Roger D. Pollard Paul RacettePaul E. Racette James Randa Jolene D. Splett David S. Tucker Wojciech Wiatr Ken Wong Richard J. Wylde