David K. Walker

24 papers A 2C 10Journal 12
YearRankTypeTitle / Venue / Authors
2020 J jnl
Microwave Radiometer Instability Due to Infrequent Calibration.
IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.
Kevin J. Coakley, Jolene D. Splett, David K. Walker, Mustafa Aksoy, Paul E. Racette
2018 J jnl
Brightness Temperature Calculation and Uncertainty Propagation for Conical Microwave Blackbody Targets.
IEEE Trans. Geosci. Remote. Sens.
Derek A. Houtz, William J. Emery, Dazhen Gu, David K. Walker
2017 J jnl
Electromagnetic Design and Performance of a Conical Microwave Blackbody Target for Radiometer Calibration.
IEEE Trans. Geosci. Remote. Sens.
Derek A. Houtz, William J. Emery, Dazhen Gu, Karl Jacob, Axel Murk, David K. Walker, Richard J. Wylde
2015 C conf
Simulations to characterize a passive microwave blackbody design.
IGARSS
Derek A. Houtz, David K. Walker, Dazhen Gu
2013 J jnl
A Geometric Error Model for Misaligned Calibration Target in Passive Microwave Remote-Sensing Systems.
IEEE Geosci. Remote. Sens. Lett.
Dazhen Gu, James Randa, David K. Walker
2013 C conf
A finite element thermal simulation of a microwave blackbody calibration target.
IGARSS
Derek Houtz, David K. Walker
2012 C conf
An investigation of antenna characterization techniques in microwave remote sensing calibration.
IGARSS
Derek Houtz, Dazhen Gu, David K. Walker, James Randa
2012 J jnl
Extraction of Illumination Efficiency by Solely Radiometric Measurements for Improved Brightness-Temperature Characterization of Microwave Blackbody Target.
IEEE Trans. Geosci. Remote. Sens.
Dazhen Gu, Derek Houtz, James Randa, David K. Walker
2012 C conf
Realization of a standard radiometer for microwave brightness-temperature measurements traceable to fundamental noise standards.
IGARSS
Dazhen Gu, Derek Houtz, James Randa, David K. Walker
2011 C conf
Extraction of reflectivity from microwave blackbody target with free-space measurements.
IGARSS
Dazhen Gu, Derek Houtz, James Randa, David K. Walker
2011 J jnl
Reflectivity Study of Microwave Blackbody Target.
IEEE Trans. Geosci. Remote. Sens.
Dazhen Gu, Derek Houtz, James Randa, David K. Walker
2011 J jnl
Verification of Noise-Parameter Measurements and Uncertainties.
IEEE Trans. Instrum. Meas.
James Randa, Joel Dunsmore, Dazhen Gu, Ken Wong, David K. Walker, Roger D. Pollard
2010 C conf
Comparison of microwave black-body target radiometric measurements.
IGARSS
David K. Walker, Dazhen Gu, Katherine MacReynolds, Randy Direen, James Randa, Amanda E. Cox, Derek Houtz, Robert L. Billinger
2010 C conf
Reflectivity studies of passive microwave calibration targets and absorptive materials.
IGARSS
Dazhen Gu, Amanda E. Cox, Derek Houtz, David K. Walker, James Randa, Robert L. Billinger
2009 J jnl
Variable Termination Unit for Noise-Parameter Measurement.
IEEE Trans. Instrum. Meas.
Dazhen Gu, David K. Walker, James Randa
2007 J jnl
On-Wafer Measurement of Transistor Noise Parameters at NIST.
IEEE Trans. Instrum. Meas.
James Randa, David K. Walker
2005 J jnl
Errors resulting from the reflectivity of calibration targets.
IEEE Trans. Geosci. Remote. Sens.
James Randa, David K. Walker, Amanda E. Cox, Robert L. Billinger
2005 J jnl
Systematic errors of noise parameter determination caused by imperfect source impedance measurement.
IEEE Trans. Instrum. Meas.
Wojciech Wiatr, David K. Walker
2004 C conf
Errors due to the reflectivity of calibration targets.
IGARSS
James Randa, David K. Walker, Amanda E. Cox, Robert L. Billinger
2004 C conf
Nonlinear modeling of tunnel diode detectors.
IGARSS
David K. Walker, Kevin J. Coakley, Jolene D. Splett
2004 C conf
Standard radiometers and targets for microwave remote sensing.
IGARSS
James Randa, Amanda E. Cox, David K. Walker, Michael H. Francis, Jeffrey R. Guerrieri, Katherine MacReynolds
1994 A conf
Computer science lecture room demonstration experiment in event counting (abstract).
SIGCSE
David K. Walker, Hamid Chahryar, James W. Moore, David S. Tucker
1992 A conf
Lectureroom demonstration of serial data communications.
SIGCSE
David K. Walker, Hamid Chahryar, Jamil Chaudri, Akhtar Lodgher, Elias Majdalani, David S. Tucker
1991 J jnl
Managing hard-disk PCs in the introductory laboratory.
ACM SIGCSE Bull.
David K. Walker, David S. Tucker