Browse "School of Electrical Engineering(전기및전자공학부)" by Author 12

Showing results 1 to 60 of 90

1

A Hybrid Algorithm Using Genetic Algorithm and Gradient-Based Algorithm for Microwave Inverse Scattering

Park, Cheol Hoonresearcher; Ra, Jung Woong, International Conference on Evolutionary Computation, pp.450 - 455, 1995-01-01

2

A Method to an Asymptotic Solution for a Non-Separable Problem via an Example of the Diffraction by a Composite Wedge of Conductor and Dielectric

Ra, Jung Woong, International Symposium on Electromagnetic Theory, 1998

3

An Inverse Technique by Using Moment Methods in Spectral Domain

Ra, Jung Woong, Proc. of Joint Conference on Microwaves,Electromagnetic Compatibility and Optical Devices, 1988

4

An Iterative Inversion Method for a Perfectly Conducting Cylinder on Angular Spectral Domain

Ra, Jung Woong, International Symposium on Advanced Computational and Design Techniques in Applied Electromagnetic, pp.116 -, 1994

5

Analysis of Field Patterns Scattered by an Underground Void of Circular Cylinder

Ra, Jung Woong, International Symposium on Antennas and Propagation, 1989

6

Calculation of Electromagnetic Scattering from Inhomogeneous Dielectric Cylinder by Finite Element-Boundary Element Hybrid Method

Seong, N.S.; Lee, T.K.; Lee, Soo-Youngresearcher; Ra, Jung Woong, Proc. of Joint Conference on Microwaves,Electromagnetic Compatibility and Optical Devices, pp.174 - 177, 1988-02

7

COMPARISON OF MULTIPOLE AND NEUMANN'S EXPANSIONS TO CORRECTION CURRENTS FOR DIFFRACTION BY A DIELECTRIC WEDGE.

Kim Se-Yun; Ra, Jung Woong, AP-S International Symposium Digest: Antennas and Propagation., pp.1082 - 1085, 1987

8

Computation of Waveguide Modes for Waveguides of Arbitrary Cross-Section Considered by Matrix Methods

Kim, C.Y.; Yu, S.D.; Harrington, R.F.; Ra, Jung Woong; Lee, Soo-Youngresearcher, Proc. of Joint Conference on Microwaves,Electromagnetic Compatibility and Optical Devices, pp.72 - 77, 1988-02

9

Cross-Borehole Tomography of High Contrast Objects by Using Multifrequency Amplitude Measurements

Ra, Jung Woong, International Symposium on Recent Advances in Microwave Technology, 1993

10

Cross-Hole Tomography Using Improved Born Inversion

Ra, Jung Woong, Technical Symposium on Tunnel Detection, 1993

11

Decoupled Perfect-Magnetic-Conductor Backed Planar Dipoles for Surface Penetration Radar

Ra, Jung Woong, Asia-Pacific Microwave Conference, 1998

12

Decoupling Mechanism of Two Dipoles in a Conductor Backed Thin Dielectric Layer above Earth

Ra, Jung Woong, Asia-Pacific Microwave Conference, pp.617 - 620, 1994

13

Development of a Continuous Electromagnetic Wave Wide-Band Phase-Measuring System

Ra, Jung Woong, Technical Symposium on Tunnel Detection, 1993

14

Diffraction by a Dielectric Wedge with Distributed Currents on the Interfaces

Ra, Jung Woong, Proceedings of ISAP, pp.859 - 862, 1985

15

Diffraction by Arbitrary-Angled Dielectric Wedge

Kim, S. Y.; Shin, Sang Yungresearcher; Ra, Jung Woong, USRI(International Union of Radio Science) National radio Science Meeting, 1982

16

Diffraction by Dielectric Wedge

Joo, C. S.; Shin, Sang Yungresearcher; Ra, Jung Woong, URSI National Radio Science Meeting, 1981

17

Diffraction of plane wave by dielectric wedge

Ra, Jung Woong, 2007 International Conference on Electromagnetics in Advanced Applications, ICEAA'07, pp.65 - 67, 2007-09-17

18

Diffraction pattern by a trapezoidal cylindrical cavity

Lee Taek-Kyung; Kim Se-Yun; Ra, Jung Woong, 1990 Antennas and Propagation Symposium Digest, v.3, pp.1346 - 1349, 1990-05-07

19

Direct and Inverse Scattering Problems in Underground Tunnel Environments

Ra, Jung Woong, International Conference on Electromagnetics in Advanced Applications, 1999

20

Dynamic Field Behavior Near the Edge of a Dielectric Wedge for Plane Electromagnetic Wave Incidence

Ra, Jung Woong, International Symposium on Antennas and Propagation, 2000

21

Dynamic Field Behavior Near the Edge of a Dielectric Wedge for Plane Electromagnetic Wave Incidence

Ra, Jung Woong, International Conference on Electronics, Information and Communications, pp.598 - 601, 2000

22

Edge diffraction of electromagnetic waves by a composite wedge of conductor and dielectric

Ha Huen-Tae; Ra, Jung Woong, Proceedings of the 1997 Asia-Pacific Microwave Conference, APMC. Part 2 (of 3), v.1, pp.181 - 184, 1997-12-02

23

Effcient Computation of Near Fields and Coupling of Antennas Located Near a Lossy Ground Plane

Ra, Jung Woong, URSI National Radio Science Meeting, pp.54 -, 1983

24

Electromagnetic Fields Near the Edge of Dielectric Wedge

Ra, Jung Woong, The International Conference on Electromagnetics in Advanced Applications, 2001

25

Electromagnetic Imaging of 2-D Inhomogeneous Dielectric Objects by an Improved Spectral Inverse Technique

Ra, Jung Woong, Computation of Electromagnetic Fields, 1989

26

Electromagnetic imaging of complex permittivity profiles by moment method in the spectral domain

Kim Se-Yun; Lee Jae-Min; Ra, Jung Woong, IEEE AP-S International Symposium Digest: Antennas and Propagation, 1988, v.2, pp.786 - 789, 1988

27

Electromagnetic Imaging of Permittivity Profiles by an Imporoved Spectral Inverse Technique

Ra, Jung Woong, IEEE AP-S International Symposium, pp.26 - 30, 1989

28

Electromagnetic Waves for Underground Tomogram

Ra, Jung Woong, International Conference on Radio Science, 1995

29

Expansion of the Correction Fields in the Dielectric Interfaces for the Scattering by Dielectric Wedges

Ra, Jung Woong, Progress in Electromagnetics Research Symposium, 2001

30

Fast Converging Surface Currents for the Correction of Physical Optical Edge Diffraction by a Dielectric Wedge

Ra, Jung Woong, Progress in Electromagnetics Research Symposium, 1999

31

Frequency-swept microwave imaging of a lossy dielectric cylinder in a lossy medium

Kim Jung-Hye; Ra, Jung Woong, Proceedings of the 1995 International Geoscience and Remote Sensing Symposium. Part 1 (of 3), v.1, pp.21 - 23, 1995-07-10

32

Genetic Algorithm for the Reconstruction of a Large and High-Contrast Penetrable Object in Multi-Frequency Angular Spectral Domain

Ra, Jung Woong, International Symposium on Antennas and Propagation, pp.229 - 232, 1996

33

Highly Decoupled Transmitting and Receiving Antenna for CW Ground-Penetrating Radar(Invited)

Ra, Jung Woong, Asia-Pacific Radio Science Conference, 2001

34

Hybrid Algorithm Combining the Levenberg-Marquardt Algorithm and Genetic Algorithm for the Iterative Inverstion Method

Ra, Jung Woong, International Geoscience and Remote Sensing Symposium, 1998

35

Hybrid algorithm using genetic algorithm and gradient-based algorithm for iterative microwave inverse scattering

Yang Sang Yong; Park Lae-Jeong; Park, Cheol Hoonresearcher; Ra, Jung Woong, Proceedings of the 1995 IEEE International Conference on Evolutionary Computation. Part 1 (of 2), v.1, pp.450 - 452, 1995-11-29

36

Identification of Deeply Buried Air Tunnel from the Cross-Borehole Tomogram

Ra, Jung Woong, Progress in Electromagnetics Research Symposium, 2001

37

Identification of Penetrable Subsurface Objects by the Iterative Inversion Method

Ra, Jung Woong, International Geoscience and Remote Sensing Symposium, 1998

38

Illposedness and Local Minima of the Cost Function in the Iterative Inverse Scattering of a Larger High Contrast Object

Ra, Jung Woong, Korea-Japan Joint Conference on Electromagnetic Theory and Compatibility, pp.134 - 138, 1996

39

Illposedness, Resolution, Local Minima, and Uniqueness in Iterative Inverse Scattering and Its Application to Subsurface Tomogram

Ra, Jung Woong, International Workshop on Advanced Electromagnetics, 2001

40

Imaging of a penetrable object buried in a lossy half-space for a multipoint bistatic measurement configuration above the interface

Lyu Jae-Woo; Ra, Jung Woong, Proceedings of the 1997 IEEE International Geoscience and Remote Sensing Symposium, IGARSS'97. Part 3 (of 4), v.4, pp.1489 - 1491, 1997-08-03

41

Imaging of Penetrable Targets in the Dissipative Half Space by Using the Interative Moment Method in the Spatial Frequency Domain

Ra, Jung Woong, Progress in Electromagnetics Research Symposium, pp.354 - 354, 1996

42

Imaging of the Penetrable Object Buried in a Lossy Half Space by Using the Interative Inversion Algorithm

Ra, Jung Woong, 6th International Conference on Ground Penetrating Radar, pp.217 - 221, 1996

43

Imaging of Three Dimensional Conducting Object by Using Spherical Angular Mode Representation and Physical Optics Approximation

Ra, Jung Woong, Asia-Pacific Microwave Conference, pp.316 - 319, 1995

44

Imaging of Underground Object from In-Situ Measured Data

Ra, Jung Woong, International Symposium on Electromagnetic Theory, 1998

45

Improved Correction of the Physical Optics Solution for a Composite Wedge of Dielectric and Metal by Using the Uniform Pattern Function

Ra, Jung Woong, Asia-Pacific Microwave Conference, pp.109 - 112, 1996

46

Improvement of the Born Approximation in the Reconstruction of Dielectric Object by Using Projection Function

Ra, Jung Woong, IEEE AP-S International Symposium, pp.1620 - 1623, 1991

47

In Situ Measurement of the Permittivity and the Conductivity of the Ground by using Two Loop Antennas on Surface of the Ground

Ra, Jung Woong, The International Conference on Electromagnetics in Advanced Applications, 2001

48

Incoherent Imaging of a Cylindrical Cavity by Using Multi-Frequency Intensity Pattern

Ra, Jung Woong, Asia-Pacific Microwave Conference, pp.1177 - 1180, 1994

49

Interdependency of Resolution and Illposedness in the Iterative Imaging of Dielectric Object

Ra, Jung Woong, Progress in Electromagnetics Research Symposium, 1999

50

Inverse Scattering via Moment Method Compared with Born Approximation

Ra, Jung Woong, International Symposium on the Mathematical Methods in Electromagnetic Theory, 1991

51

Iterative Inverse Scattering Methods in the Spatial Frequency Domain

Ra, Jung Woong, International Symposium on Advanced Computational and Design Techniques in Applied Electromagnetic, pp.64 -, 1994

52

Iterative Reconstruction of Complex Permittivity versus Iterative Multiparameter Optimization for Tomogram of Underground Target and Geophysical Structures

Ra, Jung Woong, General Assembly of the International Union of Radio Science, 1999

53

Iterative Reconstruction of Dielectric and Conducting Cylinders Buried in the Lossy Half Space

Ra, Jung Woong, Progress in Electromagnetics Research Symposium, 2001

54

Korean Microwave Research Activities

Ra, Jung Woong, Asia-Pacific Microwave Conference, 1994

55

Method of Dual Integral Equation for Non-Separable Problem, Dielectric Wedge(Invited)

Ra, Jung Woong, Asia-Pacific Radio Science Conference, 2001

56

Microwave Engineering Education at KAIST

Ra, Jung Woong, Asia-Pacific Microwave Technology and Educatuon Workshop, 1991

57

Microwave Imaging by Using a New Hybrid Algorithm Combined by Simulated Annealing and Gradient Algorithms

Ra, Jung Woong, Asia-Pacific Microwave Conference, pp.395 - 398, 1995

58

Microwave Imaging of a Perfectly Conducting Cylinder by Using the Angular Spectrum of the Scattered Fields

Ra, Jung Woong, Asia-Pacific Microwave Conference, pp.1205 - 1208, 1994

59

Microwave Research Activities in Korea

Ra, Jung Woong, Asia-Pacific Microwave Conference, 1990

60

Moment Method Inversion of Complex Permittivity Profiles by Using Propagating Modes with Multiple Sources in the Presence of Noise

Ra, Jung Woong, International Symposium on Electromagnetic Theory, pp.261 - 263, 1995

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