TY  - Abstract
A1  - Chen, Y H
A1  - Chew, W C
A1  - Liu, Q H
T1  - A three-dimensional finite difference code for the modeling of sonic logging tools
N1  - R825225
ER  - 


TY  - Abstract
A1  - He, J 
A1  - Liu, Q H
T1  - An FDTD method with nonuniform cylindrical grids for inhomogeneous conductive media
N1  - R825225
ER  - 


TY  - Abstract
A1  - Liu, Q H
T1  - A New PML formulation for anisotropic media and PSTD algorithm.
Y1  - 1998/06/
N1  - R825225
ER  - 


TY  - Abstract
A1  - Liu, Q H
A1  - Fan, G X
T1  - A frequency-dependent PSTD algorithm for general dispersive media.
Y1  - 1998/06/
N1  - R825225
ER  - 


TY  - CONF
A1  - Fan, G 
A1  - Liu, Q H
T1  - A PML-FDTD algorithm for general dispersive media in GPR and plasma applications.
Y1  - 1998/06/21-26
N1  - R825225
VL  - 4
SP  - 2014
EP  - 2017
ER  - 


TY  - CONF
A1  - Fan, G 
A1  - Liu, Q H
T1  - Dyadic Green's functions for curved waveguides and cavities and their reformulation.
Y1  - 1998/06/21-26
N1  - R825225
VL  - 3
SP  - 1504
EP  - 1507
ER  - 


TY  - CONF
A1  - Fan, G 
A1  - Liu, Q H
T1  - A PML-FDTD algorithm for general dispersive media.
Y1  - 1998/03/16-20
N1  - R825225
VL  - 2
SP  - 655
EP  - 662
ER  - 


TY  - CONF
A1  - He, J Q
A1  - Liu, Q H
T1  - A nonuniform cylindrical FDTD algorithm using new split PML formulations.
Y1  - 1998/06/21-26
N1  - R825225
SP  - 588
EP  - 591
ER  - 


TY  - CONF
A1  - He, J 
A1  - Liu, Q H
T1  - A systematic study of three PML absorbing boundary conditions through a unified formulation in cylindrical coordinates.
Y1  - 1998/03/16-20
N1  - R825225
VL  - 2
SP  - 631
EP  - 638
ER  - 


TY  - CONF
A1  - Liu, Q H
A1  - He, J 
T1  - An efficient PSTD algorithm in cylindrical coordinates.
Y1  - 1998/06/21-26
N1  - R825225
VL  - 1
SP  - 558
EP  - 561
ER  - 


TY  - CONF
A1  - Liu, Q H
A1  - Nguyen, N 
T1  - Nonuniform fast-Fourier transform (NUFFT) algorithm and its applications.
Y1  - 1998/06/21-26
N1  - R825225
VL  - 3
SP  - 1782
EP  - 1785
ER  - 


TY  - CONF
A1  - Liu, Q H
A1  - He, J Q
T1  - A PSTD algorithm in cylindrical coordinates.
Y1  - 1998/03/16-20
N1  - R825225
VL  - 2
SP  - 845
EP  - 851
ER  - 


TY  - CONF
A1  - Liu, Q H
A1  - Nguyen, N 
T1  - An accurate algorithm for nonuniform fast Fourier transforms (NUFFT) and its applications.
Y1  - 1998/03/16-20
N1  - R825225
VL  - 2
SP  - 972
EP  - 978
ER  - 


TY  - CONF
A1  - Liu, Q H
T1  - On the PSTD method for large-scale problems.
Y1  - 1998/03/16-20
N1  - R825225
VL  - 2
SP  - 852
EP  - 857
ER  - 


TY  - CONF
A1  - Tang, X Y
A1  - Liu, Q H
T1  - CG-FFT for nonuniform inverse fast-Fourier transforms (NU-IFFTs).
Y1  - 1998/06/21-26
N1  - R825225
VL  - 3
SP  - 1786
EP  - 1789
ER  - 


TY  - CONF
A1  - Tang, Z B
A1  - Liu, Q H
T1  - The 2.5D pseudospectral time-domain (PSTD) algorithm with PML absorbing boundary condition.
Y1  - 1998/06/21-26
N1  - R825225
VL  - 3
SP  - 1496
EP  - 1499
ER  - 


TY  - JOUR
A1  - Chang, C 
A1  - Liu, Q 
T1  - Inversion of source-time functions using borehole array sonic waveforms.
Y1  - 1998/06/
N1  - R825225
JF  - JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
J1  - J ACOUST SOC AM
VL  - 103
IS  - 6
SP  - 3163
EP  - 3168
PB  - Acoustical Society of America
ER  - 


TY  - JOUR
A1  - Chen, Y 
A1  - Chew, W C
A1  - Liu, Q 
T1  - A three-dimensional finite difference code for the modeling of sonic logging tools.
Y1  - 1998/02/
N1  - R825225
JF  - JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
J1  - J ACOUST SOC AM
VL  - 103
IS  - 2
SP  - 702
EP  - 712
PB  - Acoustical Society of America
ER  - 


TY  - JOUR
A1  - Fan, G 
A1  - Liu, Q H
T1  - Pseudospectral time-domain algorithm applied to electromagnetic scattering from electrically large objects.
Y1  - 2001/04/20
N1  - R825225
JF  - MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
J1  - MICROW OPT TECHN LET
VL  - 29
IS  - 2
SP  - 123
EP  - 125
ER  - 


TY  - JOUR
A1  - Fan, G 
A1  - Liu, Q H
A1  - Hutchinson, S A
T1  - FDTD and PSTD simulations for plasma applications.
Y1  - 2001/04/
N1  - R825225
JF  - IEEE TRANSACTIONS ON PLASMA SCIENCE
J1  - IEEE T PLASMA SCI
VL  - 29
IS  - 2
SP  - 341
EP  - 348
ER  - 


TY  - JOUR
A1  - Fan, G 
A1  - Liu, Q H
T1  - Dyadic Green's functions for curved waveguides and cavities and their reformulation.
Y1  - 2002/10/
N1  - R825225
JF  - RADIO SCIENCE
J1  - RADIO SCI
VL  - 37
IS  - 5
SP  - 11
EP  - 1–11-10
ER  - 


TY  - JOUR
A1  - Fan, G-X 
A1  - Liu, Q H
T1  - A PML-FDTD algorithm for simulating plasma-covered cavity-backed slot antennas.
Y1  - 1998/11/
N1  - R825225
JF  - MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
J1  - MICROW OPT TECHN LET
VL  - 19
IS  - 4
SP  - 258
EP  - 262
PB  - John Wiley and Sons
ER  - 


TY  - JOUR
A1  - He, J 
A1  - Liu, Q H
T1  - A nonuniform cylindrical FDTD algorithm with improved PML and quasi-PML absorbing boundary conditions.
Y1  - 1999/03/
N1  - R825225
JF  - IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
J1  - IEEE T GEOSCI REMOTE
VL  - 37
IS  - 2
SP  - 1066
EP  - 1072
PB  - IEEE
ER  - 


TY  - JOUR
A1  - Liu, Q H
T1  - An FDTD algorithm with perfectly matched layers for conductive media.
Y1  - 1997/02/05
N1  - R825225
JF  - MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
J1  - MICROW OPT TECHN LET
VL  - 14
IS  - 2
SP  - 134
EP  - 137
PB  - John Wiley and Sons
ER  - 


TY  - JOUR
A1  - Liu, Q H
T1  - The PSTD algorithm: a time-domain method requiring only two cells per wavelength.
Y1  - 1997//
N1  - R825225
JF  - MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
J1  - MICROW OPT TECHN LET
VL  - 15
IS  - 3
SP  - 158
EP  - 165
PB  - John Wiley and Sons
ER  - 


TY  - JOUR
A1  - Liu, Q H
A1  - Tao, J 
T1  - The perfectly matched layer (PML) for acoustic waves in absorptive media.
Y1  - 1997//
N1  - R825225
JF  - JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
J1  - J ACOUST SOC AM
VL  - 102
IS  - 4
SP  - 2072
EP  - 2082
PB  - Acoustical Society of America
ER  - 


TY  - JOUR
A1  - Liu, Q H
A1  - Nguyen, N 
T1  - An accurate algorithm for nonuniform fast Fourier transforms (NUFFT's).
Y1  - 1998/01/
N1  - R825225
JF  - IEEE TRANSACTIONS ON MICROWAVE AND GUIDED WAVE LETTERS
VL  - 8
IS  - 1
SP  - 18
EP  - 20
PB  - IEEE
ER  - 


TY  - JOUR
A1  - Liu, Q H
T1  - The pseudospectral time-domain (PSTD) algorithm for acoustic waves in absorptive media.
Y1  - 1998/07/
N1  - R825225
JF  - IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL
VL  - 45
IS  - 4
SP  - 1044
EP  - 1055
ER  - 


TY  - JOUR
A1  - Liu, Q H
A1  - He, J Q
T1  - Quasi-PML for waves in cylindrical coordinates.
Y1  - 1998/10/05
N1  - R825225
JF  - MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
J1  - MICROW OPT TECHN LET
VL  - 19
IS  - 2
SP  - 107
EP  - 111
PB  - John Wiley and Sons
ER  - 


TY  - JOUR
A1  - Liu, Q H
A1  - Tang, X Y
T1  - Iterative algorithm for nonuniform inverse fast Fourier transform (NU- IFFT).
Y1  - 1998/10/1
N1  - R825225
JF  - ELECTRONICS LETTERS
J1  - ELECTRON LETT
VL  - 34
IS  - 20
SP  - 1913
EP  - 1914
ER  - 


TY  - JOUR
A1  - Liu, Q H
T1  - Some current trends in numerical methods for transient acoustic and elastic waves in multidimensional inhomogeneous media.
Y1  - 1998//
N1  - R825225
JF  - CURRENT TOPICS IN ACOUSTICAL RESEARCH
VL  - 2
SP  - 31
EP  - 42
ER  - 


TY  - JOUR
A1  - Liu, Q H
T1  - Perfectly matched layers for elastic waves in cylindrical and spherical coordinates.
Y1  - 1999/04/
N1  - R825225
JF  - JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
J1  - J ACOUST SOC AM
VL  - 105
IS  - 4
SP  - 2075
EP  - 2084
PB  - Acoustical Society of America
ER  - 


TY  - JOUR
A1  - Liu, Q H
A1  - Fan, G-X 
T1  - A frequency-dependent PSTD algorithm for general dispersive media.
Y1  - 1999/02/
N1  - R825225
JF  - IEEE TRANSACTIONS ON MICROWAVE AND GUIDED WAVE LETTERS
VL  - 9
IS  - 2
SP  - 51
EP  - 53
PB  - IEEE
ER  - 


TY  - JOUR
A1  - Liu, Q H
T1  - PML and PSTD algorithm for arbitrary lossy anisotropic media.
Y1  - 1999/02/
N1  - R825225
JF  - IEEE TRANSACTIONS ON MICROWAVE AND GUIDED WAVE LETTERS
VL  - 9
IS  - 2
SP  - 48
EP  - 50
PB  - IEEE
ER  - 


TY  - JOUR
A1  - Liu, Q H
T1  - Large-scale simulations of electromagnetic and acoustic measurements using the pseudospectral time-domain (PSTD) algorithm.
Y1  - 1999/03/
N1  - R825225
JF  - IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
J1  - IEEE T GEOSCI REMOTE
VL  - 37
IS  - 2
SP  - 917
EP  - 926
PB  - IEEE
ER  - 


TY  - JOUR
A1  - Liu, Q H
A1  - Zhang, Z Q
T1  - Nonuniform fast Hankel transform (NUFHT) algorithm.
Y1  - 1999/11/10
N1  - R825225
JF  - APPLIED OPTICS
J1  - APPL OPTICS
VL  - 38
IS  - 32
SP  - 6705
EP  - 6708
PB  - Optical Society of America
ER  - 


TY  - JOUR
A1  - Liu, Q H
A1  - Fan, G-X 
T1  - Simulations of GPR in dispersive media using a frequency-dependent PSTD algorithm.
Y1  - 1999/09/
N1  - R825216
N1  - R825225
JF  - IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
J1  - IEEE T GEOSCI REMOTE
VL  - 37
IS  - 5
SP  - 2317
EP  - 2324
PB  - IEEE
ER  - 


TY  - JOUR
A1  - Liu, Q H
A1  - He, J Q
T1  - An efficient PSTD algorithm for cylindrical coordinates.
Y1  - 2001/09/
N1  - R825225
JF  - IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
J1  - IEEE T ANTENN PROPAG
VL  - 49
IS  - 9
SP  - 1349
EP  - 1351
ER  - 


TY  - JOUR
A1  - Liu, Q 
A1  - Sinha, B K
T1  - Multipole acoustic waveforms in fluid-filled boreholes in biaxially stressed formations: a finite-difference method.
Y1  - 2000/01/
N1  - R825225
JF  - GEOPHYSICS
J1  - GEOPHYSICS
VL  - 65
IS  - 1
SP  - 190
EP  - 201
ER  - 


TY  - JOUR
A1  - Nguyen, N 
A1  - Liu, Q H
T1  - The regular Fourier matrices and nonuniform fast-Fourier transforms.
Y1  - 1999//
N1  - R825225
JF  - SIAM JOURNAL OF SCIENTIFIC COMPUTING
VL  - 21
IS  - 1
SP  - 283
EP  - 293
ER  - 


TY  - CONF
A1  - Chew, W C
A1  - Liu, Q H
T1  - Perfectly matched layers for elastodynamics
N1  - R825225
ER  - 


TY  - CONF
A1  - Fan, G X
A1  - Liu, Q H
T1  - A 3D PML-FDTD algorithm for simulating ground-penetrating radar on dispersive earth media.
Y1  - 1998/05/27-30
N1  - R825225
ER  - 


TY  - CONF
A1  - He, J 
A1  - Liu, Q H
T1  - Borehole radar modeling with a nonuniform cylindrical FDTD algorithm.
Y1  - 1998/05/27-30
N1  - R825225
ER  - 


TY  - CONF
A1  - Liu, Q H
A1  - Fan, G X
T1  - A PSTD algorithm for general dispersive media and its applications to GPR simulations.
Y1  - 1998/07/6-10
N1  - R825225
ER  - 


TY  - CONF
A1  - Liu, Q H
A1  - Nguyen, N 
A1  - Tang, X 
T1  - Accurate algorithms for nonuniform fast-forward and inverse-Fourier transforms and their applications.
Y1  - 1998/07/6-10
N1  - R825225
ER  - 


TY  - CONF
A1  - Liu, Q H
T1  - A new algorithm for simulations of GPR and acoustic reflection measurements.
Y1  - 1998/05/27-30
N1  - R825225
ER  - 


TY  - CONF
A1  - Liu, Q H
A1  - Li, Y L
A1  - Liao, J C
T1  - The PSTD algorithm: a fast and accurate method for electronic package characterization
N1  - R825225
ER  - 


TY  - CONF
A1  - Liu, Q H
A1  - Tao, J 
T1  - Perfectly matched layers for acoustic waves in viscous media: applications to underwater acoustics
Y1  - 1997//
N1  - R825225
JF  - JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
J1  - J ACOUST SOC AM
PB  - Acoustical Society of America
ER  - 


TY  - CONF
A1  - Liu, Q H
T1  - The PSTC algorithm: a time-domain method combining the pseudospectral technique and perfectly matched layers
Y1  - 1997//
N1  - R825225
JF  - JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
J1  - J ACOUST SOC AM
PB  - Acoustical Society of America
ER  - 


TY  - CONF
A1  - Liu, Q H
T1  - A new numerical method for large-scale complex media: the PSTD algorithm
N1  - R825225
ER  - 


TY  - CONF
A1  - Liu, Q H
T1  - Finite-difference and pseudospectral time-domain methods for subsurface radar applications
N1  - R825225
ER  - 


TY  - CONF
A1  - Liu, Q H
T1  - On the PSTD method for large-scale problems, media
N1  - R825225
ER  - 


TY  - CONF
A1  - Liu, Q H
T1  - The pseudospectral time-domain (PSTD) method: a new algorithm for solutions of Maxwell's equations
N1  - R825225
ER  - 


TY  - CONF
A1  - Liu, Q H
T1  - Using GPR and seismic reflection measurements to characterize buried objects: large-scale simulations
N1  - R825225
ER  -