Professor

Electrical and Computer Engineering

**Campus Address:**

205 Dreese Laboratory or 221 ElectroScience Laboratory

Department of Electrical and Computer Engineering

2015 Neil Avenue

Columbus, OH 43210 USA

phone: (614) 292-1593

fax: (614) 292-7297

email: johnson@ece.osu.edu

A few related web pages:

Note Copyright is held by IEEE for IEEE articles. See IEEE journal for final published versions of these papers.

- M. Frankford, N. Majurec, and J. T. Johnson, "Software-defined radar for MIMO and
adaptive waveform applications," Proc. IEEE Radar Conf., 2010. (pdf )

- M. Frankford, J. T. Johnson, and E. Ertin, "Inclduing spatial correlations in the
statistical MIMO radar target model," IEEE Sign. Proc. Let., June 2010 ( pdf )

- M. Frankford, "Exploration of MIMO radar techniques with a software-defined radar,"
Ph.D. Dissertation, The Ohio State University, 2011. ( pdf )

- Poster on our group's Software Defined Radar work, 2010.
( pdf )

- Movie demonstrating adaptive PRF control ( wmv )

### ---- Interference suppression for microwave radiometry ---

- J. Park, J. T. Johnson, N. Majurec, N. Niamsuwan, J. R. Piepmeier,
P. N. Mohammed, C. S. Ruf, S. Misra, S. H. Yueh, and S. Dinardo,
"Airborne L-band RFI observations from the SMAPVEX08 campaign and
associated flights," IEEE Trans. Geosc. Rem. Sens.,
vol. 49, pp.3359-3370, 20111. (pdf )

- B. Guner, N. Niamsuwan, and J. T. Johnson, ``Performance study of
a cross-frequency detector for pulsed sinusoidal RFI in microwave
radiometry,"
IEEE Trans. Geosc. Rem. Sens., July 2010.
(pdf )

- J. T. Johnson and L. C. Potter, ``A study of detection
algorithms for pulsed sinusoidal interference in microwave radiometry,''
submitted to IEEE Trans. Geosc. Rem. Sens., 2007.
(pdf )

- B. Guner, M. T. Frankford, and J. T. Johnson,
``A study of the Shapiro-Wilk test for the detection of
pulsed sinusoidal radio frequency interference,"
IEEE Trans. Geosc. Rem. Sens., June 2009. (pdf ).

- B. Guner, J. T. Johnson, and N. Niamswaun, "Time and frequency blanking for radio frequency interference mitigation in microwave radiometry,"
IEEE TGRS, Nov 2007.
(pdf )

- J. T. Johnson, A. J. Gasiewski, B. Guner, G. A. Hampson, S. W. Ellingson, R. Krishnamachari, N. Niamswaun, E. McIntyre, M. Klein, and V. Leuski, "Airborne radio frequency interference studies at C-band using a digital receiver,"
IEEE TGRS, July 2006.
(pdf )

- N. Niamsuwan, J. T. Johnson, and S. W. Ellingson,
``Examination of a simple pulse blanking technique for RFI mitigation,"
Radio Science, June 2005.
(pdf )

- S. W. Ellingson and J. T. Johnson,
``A polarimetric survey of radio frequency interference in C- and X-bands in the continental United States using WindSAT radiometry," IEEE Trans. Geosc. Rem. Sens., March 2006.
(pdf )

- G. A. Hampson, S. W. Ellingson and J. T. Johnson,
`Design and demonstration of an interference suppressing microwave radiometer,"
IEEE Aerospace Conference, 2004.
(pdf )

- J. T. Johnson, A. J. Gasiewski, G. A. Hampson, S. W. Ellingson, R. Krishnamachari, and M. Klein, "Airborne radio frequency interference studies at C-band using a digital receiver,"
IGARSS 2004 conference, 2004.
(pdf )

### ---- Rough surface thermal emission and microwave radiometry ---

- J. T. Johnson, M. A. Demir, and N. Majurec,
``Through wall sensing with multi-frequency microwave
radiometry: a proof of concept demonstration,"
accepted by IEEE Trans. Geosc. Rem. Sens., 2009.
(pdf )

- J. T. Johnson and T. M. Elfouhaily, "Computation of ocean-like surface
thermal emission and bistatic scattering with the reduced local curvature
approximation," IEEE Trans. Geosc. Rem. Sens., July 2007.
(pdf )

- M. Demir and J. T. Johnson,
``Fourth order small slope theory of sea brightness temperatures," IEEE Trans. Geosc. Rem. Sens., Jan 2007.
(pdf )

- E. Ertin and J. T. Johnson,
``WindSat wind vector retrievals without explicit atmospheric modeling," internal report, 2006.
(pdf )

- J. T. Johnson,
``An efficient two-scale model for the computation of thermal emission and atmospheric reflection from the sea surface," IEEE Trans. Geosc. Rem. Sens., March 2006.
(pdf )

- J. T. Johnson,
``A study of rough surface thermal emission and reflection using Voronovich's small slope
approximation," IEEE Trans. Geosc. Rem. Sens., Feb 2005.
(pdf )

- J. T. Johnson,
``Higher order emission model study of bi-sinusoidal surface brightness temperatures," Chapter 3 in PIER 37, 2002.
(pdf )

- J. T. Johnson, H. Kim, D. Wiggins, and Y. Cheon,
``Sub-surface object sensing with a multi-frequency microwave
radiometer,'' IEEE Trans. Geosc. Rem. Sens., Dec 2002.
(pdf )

- B. Ungan and J. T. Johnson,
``A study of microwave thermal emission from a sub-surface
object," Microwave Opt. Tech. Letters, April 2002.
(pdf )

- J. T. Johnson and Y. Cai, ``A theoretical study of
sea surface up/down wind brightness temperature differences,''
IEEE TGRS, Jan 2002.
(pdf )

- J. T. Johnson,
``Comparison of the physical optics
and small slope theories for polarimetric thermal emission from the sea
surface,'' IEEE TGRS, Feb 2002.
(pdf )

- M. Zhang and J. T. Johnson,
``Comparison of modeled and measured second azimuthal harmonics of
ocean surface brightness temperatures,"
IEEE TGRS, Feb 2001.
(pdf )

- J. T. Johnson,
``Thermal emission from a layered medium bounded by a slightly rough
interface,"
IEEE TGRS, Feb 2001. (pdf )

- J. T. Johnson and M. Zhang, ``Theoretical study of the small
slope approximation for ocean polarimetric thermal emission,''
IEEE Trans. Geosc. Remote Sens., Sep 1999. (pdf )

- Johnson, J. T., R. T. Shin, J. A. Kong, L. Tsang, and K. Pak, "A numerical study of ocean polarimetric thermal emission," IEEE Trans. Geosc. Rem. Sens., Jan 1999. (pdf )

- Johnson, J. T., R. T. Shin, and J. A. Kong, "Scattering and thermal emission from a two dimensional periodic surface," Progress in Electromagnetics Research, vol. 17, Jan 1997. (postscript )

### ---- Analytical theories of rough surface scattering ---

- N. Pinel, J. T. Johnson, and C. Bourlier,
``A geometrical optics model of three dimensional scattering
from a rough surface over a planar surface,"
submitted to IEEE Trans. Ant. Prop., 2008.
(pdf )

- J. T. Johnson, K. Warnick, and P. Xu,
``On the geometrical optics (Hagfors' Law) and physical optics
approximations for scattering from exponentially correlated surfaces,"
IEEE Trans. Geosc. Rem. Sens., August 2007.
(pdf )

- A. Darawankul and J. T. Johnson,
``Band limited exponentical correlation function for rough surface scattering,"
IEEE Trans. Geosc. Rem. Sens., May 2007.
(pdf )

- T. Elfouhaily and J. T. Johnson,
``A new model for rough surface scattering,"
IEEE Trans. Geosc. Rem. Sens., July 2007.
(pdf )

- T. Elfouhaily and J. T. Johnson,
``Extension of the local curvature approximation to third order and full tilt invariance,"
Waves Random Media, vol. 16, p. 97--119, 2006.
(pdf )

- T. Elfouhaily, C. Bourlier, and J. T. Johnson,
``Two families of non-local scattering models and the weighted curvature
approximation," Waves Random Media, pp. 563, 2004.
(pdf )

- M. A. Demir and J. T. Johnson,
``Fourth and higher-order small perturbation solution for
scattering from dielectric rough surfaces,"
J. Opt. Soc. Am. A, Dec 2003.
(pdf )

- M. S. Gilbert and J. T. Johnson,
``A study of the higher order small slope approximation
for 3-D scattering from a dielectric Gaussian rough surface,"
Waves in Random Media, April 2003.
(pdf )

- J. T. Johnson, ``Third order small perturbation method for
scattering from dielectric rough surfaces," (including correction)
J. Opt. Soc. Am. A, Nov 1999. (pdf )

### ---- Numerical methods for rough surface scattering ---

- P. Naenna and J. T. Johnson, ``A physically based
preconditioner for quasi-planar scattering problems,''
accepted by IEEE Trans. Ant. Prop., 2008.
(postscript )

- D. Torrungrueng, J. T. Johnson, and H. T. Chou,
``Some issues related to the novel spectral acceleration method
for the fast computation of radiation/scattering from one dimensional
extremely large scale quasi-planar structures,''
Radio Science, Mar-Apr 2002.
(postscript )

- D. Torrungrueng and J. T. Johnson,
``An improved FB/NSA algorithm for the computation of scattering
from two-dimensional large scale rough surfaces,''
J. Electromag. Waves Applic., Oct. 2001.
(pdf )

- D. Torrungrueng, H. Chou, and J. T. Johnson,
``A novel acceleration algorithm for the computation of scattering
from two-dimensional large scale perfectly conducting random rough
surfaces with the forward-backward method,"
IEEE TGRS, July 2000. (pdf )

D. Torrungrueng and J. T. Johnson, ``The forward-backward method with a novel acceleration algorithm (FB/NSA) for the computation of scattering from two-dimensional large-scale impedance random rough surfaces,'' M. Opt. Tech. Letters, May 2001. (pdf )

- H. T. Chou and J. T. Johnson, ``Formulation of forward-backward
method using novel spectral acceleration for the modeling of scattering
from impedance rough surfaces,"
IEEE Trans. Geosc. Remote Sens., Jan 2000. (pdf )

- Chou, H. T. and J. T. Johnson, "A novel acceleration algorithm for the computation of scattering from rough surfaces with the forward-backward method," Radio Science, no 5., 1998. (postscript )

- J. T. Johnson and R. J. Burkholder, ``Coupled
canonical grid/discrete dipole approach for computing scattering
from objects above or below a rough interface,''
IEEE TGRS, June 2001.
(pdf )

- Johnson, J. T., "On the canonical grid method for two dimensional scattering problems." IEEE Trans.
Ant. Prop., March 1998. (pdf )

### ---- Application of numerical methods for rough surface scattering ---

- J. T. Johnson, R. J. Burkholder, J. V. Toporkov, D. R. Lyzenga, and
W. J. Plant,
``A numerical study of the retrieval of sea surface height profiles from
low grazing angle radar data,"
submitted to IEEE Trans. Geosc. Rem. Sens., 2008.
(pdf )

- G. Pan and J. T. Johnson,
``A numerical method for studying modulation effects in
radar observations of the sea surface,"
accepted by IEEE Trans. Geosc. Rem. Sens., 2008.
(pdf )

- J. T. Johnson and R. J. Burkholder,
``A study of scattering from an object below a rough surface,"
IEEE Trans. Geosc. Rem. Sens., Jan 2004.
(pdf )

- J. T. Johnson,
``A numerical study of scattering from an object above a
rough surface,''
IEEE TAP, Oct. 2002.
(pdf )

- J. T. Johnson, J. V. Toporkov, and G. S. Brown,
``A numerical study of backscattering from time evolving
sea surfaces: comparison of hydrodynamic models,''
IEEE TGRS, Nov. 2001.
(pdf )

- A. R. Hayslip, J. T. Johnson, and G. R. Baker,
``Further numerical studies of backscattering from time
evolving non-linear sea surfaces,"
IEEE Trans. Geosc. Rem. Sens., Oct. 2003.
(pdf )

- B. Ungan and J. T. Johnson, ``Time statistics of propagation over
the ocean surface: a numerical study," IEEE TGRS, July 2000.
(pdf )

- Johnson, J. T., "A numerical study of low grazing angle backscatter from ocean-like impedance surfaces with the canonical grid method," IEEE Trans. Ant. Prop., Jan 1998. (pdf )

- Johnson, J. T., R. T. Shin, J. A. Kong, L. Tsang, and K. Pak, "A numerical study of the composite surface model for ocean backscattering," IEEE Trans. Geosc. Rem. Sens., Jan 1998. (pdf )

- H. Kim and J. T. Johnson,
``Radar image study of simulated breaking waves,"
IEEE Trans. Geosc. Rem. Sens., Oct. 2002.
(pdf )

- H. Kim and J. T. Johnson,
``Radar image studies of an ocean-like surface,"
Microwave Opt. Tech. Letters, Sept. 20 2001.
(pdf )

- H. Kim and J. T. Johnson, ``Radar images of
rough surface scattering: comparison of numerical and analytical
models,'' IEEE TAP, Feb 2002.
( pdf )

- D. Torrungrueng and J. T. Johnson,
``Numerical studies of backscattering enhancement of electromagnetic
waves from two-dimensional random rough surfaces using the FB/NSA method,''
JOSA A, Oct. 2001.
(pdf )

- Johnson, J. T., R. T. Shin, J. Eidson, L. Tsang, and J. A. Kong, "A method of moments model for VHF propagation," IEEE Trans. Ant. Prop., Jan 1997. (pdf )

### ---- Other topics ---

- G. Pan and J. T. Johnson,
``A numerical study of
the modulation of short sea waves by longer waves,"
IEEE Trans. Geosc. Rem. Sens., Oct 2006.
(pdf )

- N. Niltawach, C. Chen, J. T. Johnson, and B. A. Baertlein,
``A numerical study of buried biomass effects on ground-penetrating radar performance,"
IEEE Trans. Geosc. Rem. Sens., June, 2004.
(pdf )

- D. Torrungrueng, B. Ungan, and J. T. Johnson,
``Optical theorem for electromagnetic scattering by a three-dimensional scatterer in the presence of a lossless halfspace,"
IEEE Geosc. Rem. Sens. Let., April, 2004.
(pdf )

- R. J. Burkholder, I. J. Gupta, and J. T. Johnson,
``Comparison of monostatic and bistatic radar images,"
IEEE Ant. Prop. Mag., June 2003.
(pdf )

- K. M. Berger, G. R. Baker, and J. T. Johnson,
``A comparison of non-linear water wave models,''
Int. J. Comp. Fluid Dyn., May 2003.
(pdf )

- J. T. Johnson,
``A study of the four-path model for scattering from an object
above a halfspace,''
Microwave Opt. Tech. Letters, July 20 2001.
(pdf )

- J. Jenwatanavet and J. T. Johnson, ``An analytical
model for studies of soil modification effects on ground penetrating
radar,'' IEEE TAP, June 2001.
(pdf)

- E. Nassar, J. T. Johnson, and R. Lee, "A numerical model
for electromagnetic scattering from sea ice,"
IEEE Trans. Geosc. Remote Sens., May 2000. (pdf )

- H. Kim, J. T. Johnson, and B. Baertlein, ``High resolution Ka-Band
images of a small tree: measurements and models," IEEE Trans.
Geosc. and Remote Sens., March 2000. (pdf )

- Johnson, J. T., "Surface currents induced on a dielectric halfspace by a Gaussian beam: a useful validation for MOM codes," Radio Science, July-Aug, 1997. (postscript )

A page for my son James Johnson

A page for my daughter Annie Johnson