Gerhard Kristensson

Sökresultat

• 1992

  Time domain inversion techniques for electromagnetic scattering problems

  Kristensson, G. & Krueger, R. J., 1992, Invariant imbedding and inverse problems. Corones, J. P., Nelson, P., Kristensson, G. & Seth, D. L. (red.). Society for Industrial and Applied Mathematics, s. 1-29

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Kapitel samlingsverk › Forskning

  • permittivity 100%
  • scattering 67%
  • inversion 59%
  • electromagnetic wave 49%
  • slab 37%

• Transient Electromagnetic Wave Propagation in Anisotropic Dispersive Media

  Fridén, J., Kristensson, G. & Stewart, R. D., 1992, [Publisher information missing]. 23 s. (Technical Report LUTEDX/(TEAT-7023)/1-23/(1992); vol. TEAT-7023)

  Forskningsoutput: Bok/rapport › Rapport › Forskning

  Fil

  • anisotropic medium 100%
  • electromagnetic wave 90%
  • wave propagation 73%
  • slab 45%
  • scattering 40%
  265 Nedladdningar (Pure)

• Transient wave propagation in a reciprocal bi-isotropic media at oblique incidence

  Kristensson, G. & Rikte, S., 1992. 3 s.

  Forskningsoutput: Konferensbidrag › Konferenspaper, ej i proceeding/ej förlagsutgivet › Peer review

• Transient wave propagation in gyrotropic media

  Karlsson, A., Kristensson, G. & Otterheim, H., 1992, Invariant inbedding and inverse problems. Corones, J. P., Kristensson, G., Nelson, P. & Seth, D. L. (red.). Society for Industrial and Applied Mathematics, s. 77-89

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Kapitel samlingsverk › Forskning

  • wave propagation 100%
  • magnetic induction 27%
  • cold plasmas 25%
  • electromagnetic radiation 19%

• Transient wave propagation in reciprocal bi-isotropic media at oblique incidence

  Kristensson, G. & Rikte, S., 1992, [Publisher information missing]. 25 s. (Technical Report LUTEDX/(TEAT-7019)/1-25/(1992))

  Forskningsoutput: Bok/rapport › Rapport › Forskning

  Fil

  • wave propagation 100%
  • slab 92%
  • wave splitting 44%
  • Green function 40%
  • scattering 27%
  230 Nedladdningar (Pure)

• Wave splitting and imbedding equations for a spherically symmetric dispersive medium

  Karlsson, A., Kreider, K. & Kristensson, G., 1992, Invariant inbedding and inverse problems. Corones, J. P., Kristensson, G., Nelson, P. & Seth, D. L. (red.). Society for Industrial and Applied Mathematics, s. 103-113

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Kapitel samlingsverk › Forskning

  • Wave equations 100%
  • Scattering 74%
  • Electric fields 72%
• 1991

  Direct and inverse scattering problems in dispersive media - Green's functions and invariant imbedding techniques

  Kristensson, G., 1991, Methoden und Verfahren der Mathematischen Physik. Kleinman, R., Kress, R. & Martensen, E. (red.). Peter Lang Publishing Group, Vol. 37. s. 105-119

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Kapitel samlingsverk › Forskning

• Existence and construction of solutions of dissipative inverse problems

  Kristensson, G., Krueger, R. J. & Winther, R. C., 1991, I: Journal of Mathematical Analysis and Applications. 157, 2, s. 542-554

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • Inverse problems 100%
  • Inverse Problem 74%
  • Velocity Profile 59%
  • Dissipation 45%
  • Numerical Algorithms 45%

• Scattering of transient electromagnetic waves in reciprocal bi-isotropic media

  Kristensson, G. & Rikte, S., 1991, [Publisher information missing]. 17 s. (Technical Report LUTEDX/(TEAT-7015)/1-17/(1991); vol. TEAT-7015)

  Forskningsoutput: Bok/rapport › Rapport › Forskning

  Fil

  • Electromagnetic waves 100%
  • Scattering 88%
  • Green's function 36%
  • Nonlinear equations 33%
  • Polarization 28%
  128 Nedladdningar (Pure)

• Three-dimensional subterranean target identification by use of optimization techniques

  Björkberg, J. & Kristensson, G., 1991, [Publisher information missing]. 20 s. (Technical Report LUTEDX/(TEAT-7013)/1-20/(1991); vol. TEAT-7013)

  Forskningsoutput: Bok/rapport › Rapport › Forskning

  Fil

  • Ores 100%
  • Singular value decomposition 90%
  • Scattering 82%
  • Mean square error 81%
  • Experiments 31%
  119 Nedladdningar (Pure)

• Transformation properties of plane, spherical and cylindrical scalar and vector wave functions

  Boström, A., Kristensson, G. & Ström, S., 1991, Acoustic, Electromagnetic and Elastic Wave Scattering, Field Representations and Introduction to Scattering. Varadan, V. V., Lakhtakia, A. & Varadan, V. K. (red.). Elsevier, Vol. 1. s. 165-210

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Kapitel samlingsverk › Forskning

• Wave splitting and imbedding equations for a spherically symmetric dispersive medium

  Karlsson, A., Kreider, K. & Kristensson, G., 1991, [Publisher information missing]. 13 s. (Technical Report LUTEDX/(TEAT-7012)/1-13/(1991); vol. TEAT-7012)

  Forskningsoutput: Bok/rapport › Rapport › Forskning

  Fil

  • Wave equations 100%
  • Scattering 74%
  • Electric fields 72%
  27 Nedladdningar (Pure)
• 1990

  Direct and inverse scattering problems in dispersive media-Green's functions and invariant imbedding techniques

  Kristensson, G., 1990, Department of Electromagnetic Theory, Lund Institute of Technology. 13 s. (Technical Report LUTEDX/(TEAT-7006)/1-13/(1990); vol. TEAT-7006)

  Forskningsoutput: Bok/rapport › Rapport › Forskning

  Fil

  • Electromagnetic wave propagation 100%
  • Green's function 78%
  • Integral equations 71%
  • Convolution 65%
  • Scattering 62%
  73 Nedladdningar (Pure)

• Electromagnetic fields in boreholes-measurements and theory in three dimensions

  Malmqvist, L., Pantze, R., Kristensson, G. & Karlsson, A., 1990, Department of Electromagnetic Theory, Lund Institute of Technology. 17 s. (Technical Report LUTEDX/(TEAT-7008)/1-17/(1990); vol. TEAT-7008)

  Forskningsoutput: Bok/rapport › Rapport › Forskning

  Fil

  • electromagnetic field 100%
  • borehole 73%
  • drilling 23%
  • ore body 17%
  • geological structure 15%
  97 Nedladdningar (Pure)

• Permittivity profile reconstructions using transient electromagnetic reflection data

  Fuks, P., Kristensson, G. & Larson, G., 1990, [Publisher information missing]. 88 s. (Technical Report LUTEDX/(TEAT-7009)/1-88/(1990); vol. TEAT-7009)

  Forskningsoutput: Bok/rapport › Rapport › Forskning

  Fil

  • Deconvolution 100%
  • Permittivity 86%
  • Delta functions 62%
  • Green's function 50%
  • Impulse response 44%
  143 Nedladdningar (Pure)

• Time domain inversion techniques for electromagnetic scattering problems

  Kristensson, G., 1990, [Publisher information missing]. 33 s. (Technical Report LUTEDX/(TEAT-7011)/1-33/(1990); vol. TEAT-7011)

  Forskningsoutput: Bok/rapport › Rapport › Forskning

  Fil

  • Scattering 100%
  • Permittivity 70%
  • Green's function 41%
  • Electromagnetic waves 37%
  35 Nedladdningar (Pure)

• Transient wave propagation in gyrotropic media

  Karlsson, A., Kristensson, G. & Otterheim, H., 1990, [Publisher information missing]. 15 s. (Technical Report LUTEDX/(TEAT-7010)/1-15/(1990))

  Forskningsoutput: Bok/rapport › Rapport › Forskning

  Fil

  • wave propagation 100%
  • magnetic induction 27%
  • cold plasmas 25%
  • electromagnetic radiation 19%
  68 Nedladdningar (Pure)

• Wave splitting in the time domain for a radially symmetric geometry

  Karlsson, A. & Kristensson, G., 1990, I: Wave Motion. 12, 3, s. 197-211

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • Time Domain 100%
  • Free Space 92%
  • Propagation 65%
  • Geometry 58%
  • geometry 54%
• 1989

  Constitutive relations, dissipation and reciprocity for the Maxwell equations in the time domain

  Karlsson, A. & Kristensson, G., 1989, Department of Electromagnetic Theory, Lund Institute of Technology. 36 s. (Technical Report LUTEDX/(TEAT-7005)/1-36/(1989); vol. TEAT-7005)

  Forskningsoutput: Bok/rapport › Rapport › Forskning

  Fil

  • reciprocity 100%
  • dissipation 70%
  • anisotropic medium 33%
  • electromagnetic field 28%
  • linearity 28%
  1385 Nedladdningar (Pure)

• Direct and inverse scattering from gyrotropic media

  Karlsson, A., Kristensson, G. & Otterheim, H., 1989. 3 s.

  Forskningsoutput: Konferensbidrag › Konferenspaper, ej i proceeding/ej förlagsutgivet › Peer review

• Direct and inverse scattering in the time domain for a dissipative wave equation. Part 4: Use of phase velocity mismatches to simplify inversions

  Kristensson, G. & Krueger, R. J., 1989, I: Inverse Problems. 5, 3, s. 375-388

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • Phase Velocity 100%
  • Phase velocity 91%
  • Permittivity 89%
  • Wave equations 84%
  • Dissipative Equations 84%

• Direct and inverse scattering of transient electromagnetic waves

  Kristensson, G. & Krueger, R. J., 1989. 3 s.

  Forskningsoutput: Konferensbidrag › Konferenspaper, ej i proceeding/ej förlagsutgivet › Peer review

• Wave splitting in the time domain for a radially symmetric geometry

  Karlsson, A. & Kristensson, G., 1989, Department of Electromagnetic Theory, Lund Institute of Technology. 19 s. (Technical Report LUTEDX/(TEAT-7004)/1-19/(1989); vol. TEAT-7004)

  Forskningsoutput: Bok/rapport › Rapport › Forskning

  Fil

  • Time Domain 100%
  • Free Space 92%
  • Propagation 65%
  • Decompose 46%
  • Phase Velocity 35%
  110 Nedladdningar (Pure)
• 1988

  Three-dimensional inverse scattering: layer-stripping formulas and ill-posedness results

  Cheney, M. & Kristensson, G., 1988, I: Inverse Problems. 4, 3, s. 625-642

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • Ill-posedness 100%
  • Inverse Scattering 96%
  • inverse scattering 96%
  • stripping 92%
  • Scattering 77%
• 1987

  Direct and inverse scattering in the time domain for a dissipative wave equation. Part 3: Scattering operators in the presence of a phase velocity mismatch

  Kristensson, G. & Krueger, R. J., 1987, I: Journal of Mathematical Physics. 28, 2, s. 360-370

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • Phase Velocity 100%
  • Scattering Operator 90%
  • Dissipative Equations 84%
  • Inverse Scattering 78%
  • inverse scattering 78%

• Direct and inverse scattering problems in the domain for a dissipative wave equation

  Kristensson, G. & Krueger, R. J., 1987, [Host publication title missing]. 2 s.

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Konferenspaper i proceeding › Peer review

• Electromagnetic scattering by a perfectly conducting elliptic disk

  Björkberg, J. & Kristensson, G., 1987, I: Canadian Journal of Physics. 65, 7, s. 723-734

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • electromagnetic scattering 100%
  • conduction 57%
  • prolate spheroids 30%
  • cross sections 25%
  • eccentrics 24%
• 1986

  Direct and inverse scattering in the time domain for a dissipative wave equation. Part 1: Scattering operators

  Kristensson, G. & Krueger, R. J., 1986, I: Journal of Mathematical Physics. 27, 6, s. 1667-1682

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • Scattering Operator 100%
  • Dissipative Equations 93%
  • Inverse Scattering 86%
  • inverse scattering 86%
  • Time Domain 76%

• Direct and inverse scattering in the time domain for a dissipative wave equation. Part 2: Simultaneous reconstruction of dissipation and phase velocity profiles

  Kristensson, G. & Krueger, R. J., 1986, I: Journal of Mathematical Physics. 27, 6, s. 1683-1693

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • Phase Velocity 100%
  • Data Transmission 97%
  • Velocity Profile 86%
  • Dissipative Equations 84%
  • Inverse Scattering 78%

• Directional EM measurements in boreholes

  Pantze, R., Malmqvist, L. & Kristensson, G., 1986, Borehole Geophysics for Mining and Geotechnical Applications. Killeen, P. G. (red.). Geophysical Survey of Canada, s. 79-88

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Kapitel samlingsverk › Forskning

• E-M scattering by a perfectly conducting elliptic disk with applications to geophysical prospecting

  Björkberg, J. & Kristensson, G., 1986. 3 s.

  Forskningsoutput: Konferensbidrag › Konferenspaper, ej i proceeding/ej förlagsutgivet › Peer review

• Inverse problems for acoustic waves using the penalised likelihood method

  Kristensson, G. & Vogel, C. R., 1986, I: Inverse Problems. 2, 4, s. 461-479

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • Penalized Likelihood 100%
  • Acoustic Waves 98%
  • Likelihood Methods 91%
  • Inverse problems 86%
  • Inverse Problem 64%

• The one-dimensional inverse scattering problem for an increasing potential

  Kristensson, G., 1986, I: Journal of Mathematical Physics. 27, 3, s. 804-815

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • Inverse Scattering Problem 100%
  • inverse scattering 99%
  • derivation 23%
  • Generalization 21%
  • Class 12%
• 1985

  Acoustic scattering by a soft elliptic disk

  Kristensson, G., 1985, I: Journal of Sound and Vibration. 103, 4, s. 487-498

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • acoustic scattering 100%
  • Scattering 73%
  • Acoustics 63%
  • ellipsoids 43%
  • far fields 34%

• The current distribution on a circular disc

  Kristensson, G., 1985, I: Canadian Journal of Physics. 63, 4, s. 507-516

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • current distribution 100%
  • loop antennas 33%
  • oblate spheroids 32%
  • formulations 15%
  • conduction 15%
• 1984

  Influence of inhomogeneities in a stratified ground on the field of a circular loop antenna

  Kristensson, G., 1984, I: IEEE Transactions on Geoscience and Remote Sensing. GE-22, 1, s. 29-34

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • Loop antennas 100%
  • Antenna grounds 84%
  • inhomogeneity 77%
  • antenna 73%
  • Scattering 35%

• Natural frequencies of circular disks

  Kristensson, G., 1984, I: IEEE Transactions on Antennas and Propagation. 32, 5, s. 442-448

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • Poles 100%
  • Natural frequencies 97%
  • Boundary conditions 29%
• 1983

  Convergence of the T-matrix approach in scattering theory. II

  Kristensson, G., Ramm, A. & Ström, S., 1983, I: Journal of Mathematical Physics. 24, 11, s. 2619-2631

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • Scattering Theory 100%
  • General Boundary Conditions 53%
  • matrices 46%
  • scattering 43%
  • Small Perturbations 42%

• Electromagnetic scattering from subterranean obstacles in a stratified ground

  Karlsson, A. & Kristensson, G., 1983, I: Radio Science. 18, 3, s. 345-356

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • half space 100%
  • electromagnetic scattering 99%
  • half spaces 89%
  • Scattering 80%
  • scattering 67%

• Electromagnetic scattering in a stratified half space

  Kristensson, G. & Karlsson, A., 1983. 4 s.

  Forskningsoutput: Konferensbidrag › Konferenspaper, ej i proceeding/ej förlagsutgivet › Peer review

• Scattering of a pulsed Rayleigh wave by a spherical cavity in an elastic half space

  Boström, A. & Kristensson, G., 1983, I: Wave Motion. 5, 2, s. 137-143

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • Rayleigh Waves 100%
  • Rayleigh waves 99%
  • Cavity 73%
  • half spaces 71%
  • Scattering 63%

• The electromagnetic field in a layered earth induced by an arbitrary stationary current distribution

  Kristensson, G., 1983, I: Radio Science. 18, 3, s. 357-368

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • current distribution 100%
  • electromagnetic field 99%
  • Electromagnetic fields 94%
  • Earth (planet) 76%
  • electromagnetic fields 76%

• The electromagnetic radiation from a wire antenna above the ground

  Kristensson, G., 1983. 5 s.

  Forskningsoutput: Konferensbidrag › Konferenspaper, ej i proceeding/ej förlagsutgivet › Peer review
• 1982

  Electromagnetic scattering from geophysical targets by means of the T matrix approach: A review of some recent results

  Kristensson, G. & Ström, S., 1982, I: Radio Science. 17, 5, s. 903-912

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • half space 100%
  • electromagnetic scattering 99%
  • half spaces 89%
  • Scattering 80%
  • scattering 67%

• The T-matrix for acoustic and electromagnetic scattering by circular disks

  Kristensson, G. & Waterman, P. C., 1982, I: Journal of the Acoustical Society of America. 72, 5, s. 1612-1625

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • acoustic scattering 100%
  • Electromagnetic 93%
  • electromagnetic scattering 90%
  • Conducting 79%
  • Acoustics 73%
• 1980

  A uniqueness theorem for the Helmholtz' equation: Penetrable media with an infinite interface

  Kristensson, G., 1980, I: SIAM Journal on Mathematical Analysis. 11, 6, s. 1104-1117

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • Helmholtz equation 100%
  • Helmholtz Equation 70%
  • Uniqueness Theorem 69%
  • Half-space 64%
  • Cones 64%

• Elastic wave scattering by a three-dimensional inhomogeneity in an elastic half space

  Boström, A. & Kristensson, G., 1980, I: Wave Motion. 2, 4, s. 335-353

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • Wave Scattering 100%
  • Elastic waves 97%
  • Elastic Waves 95%
  • Inhomogeneity 88%
  • wave scattering 83%

• Electromagnetic scattering from a buried three-dimensional inhomogeneity in a lossy ground

  Kristensson, G., 1980. 4 s.

  Forskningsoutput: Konferensbidrag › Konferenspaper, ej i proceeding/ej förlagsutgivet › Peer review

• Electromagnetic scattering from buried inhomogeneities - a general three-dimensional formalism

  Kristensson, G., 1980, I: Applied Physics Reviews. 51, 7, s. 3486-3500

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • electromagnetic scattering 100%
  • inhomogeneity 72%
  • formalism 62%
  • expansion 21%
  • spheroids 20%

• The T matrix approach to scattering from buried inhomogeneities

  Ström, S. & Kristensson, G., 1980, Acoustic, Electromagnetic, and Elastic Wave Scattering - Focus on the T-matrix Approach. Varadan, V. K. & Varadan, V. V. (red.). Pergamon Press Ltd., s. 135-167

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Kapitel samlingsverk › Forskning