公开(公告)号：US10419133B2

公开(公告)日：2019-09-17

申请号：US15825913

申请日：2017-11-29

Applicant: Electronics and Telecommunications Research Institute

Inventor： Chung Sup Kim ,  Hyuk Je Kim ,  Young Jun Chong ,  Jong Soo Lim ,  Woo Jin Byun

IPC: H04B15/00 ,  H04W64/00 ,  H04W4/02 ,  H01Q3/34 ,  H01Q1/00 ,  H01Q21/20 ,  H01Q1/08 ,  H01Q1/12 ,  H04W4/029 ,  H01Q21/08

Abstract: Disclosed is a method of estimating a position of a signal source and a position estimation apparatus, the method including acquiring an environment, a frequency, and a bandwidth of the interference signal source, determining an arrangement form of the two antennas based on the environment, the frequency, and the bandwidth and arranging the two antennas, and estimating a position of the interference signal source based on an interference signal of the interference signal source and the two arranged antennas, wherein the environment includes an indoor environment and an outdoor environment.

公开(公告)号：US11456809B2

公开(公告)日：2022-09-27

申请号：US16209629

申请日：2018-12-04

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Chung Sup Kim ,  Hyuk Je Kim ,  Young Jun Chong ,  Jong Soo Lim ,  Ju Yeon Hong

IPC: H04B15/00 ,  H04B17/27 ,  H04B17/336 ,  G01S13/46

Abstract: Disclosed is a position estimation method for estimating a position of an interference signal source and a position estimation system for performing the method. The position estimation method may implement an indoor delay-space analysis structure by transmitting and receiving a known signal and a virtual array structure-based direction finding algorithm in an indoor environment in which a plurality of reflected waves is present and may increase an estimation probability for the position of the interference signal source.

公开(公告)号：US20240333574A1

公开(公告)日：2024-10-03

申请号：US18444130

申请日：2024-02-16

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kwanwoong RYU ,  Chung Sup Kim ,  Hyuk Je Kim ,  Sung Woong Choi ,  Kwonhue Choi ,  Hyung-seop Son

IPC: H04L27/26

CPC classification number: H04L27/265 ,  H04L27/2607 ,  H04L27/2628

Abstract: Provided are a signal transmission method and signal reception method of heterogeneous systems sharing a frequency band. The signal transmission method performed by a transmitter of a target communication system sharing a frequency band of a general communication system in an underlay form includes mapping information symbols to be transmitted to a delay-Doppler (DD) domain and determining an information symbol mapping matrix, applying an inverse symplectic finite Fourier transform (ISFFT) to the information symbol mapping matrix and transforming the information symbol mapping matrix into a frequency-time (FT) matrix, and applying a Heisenberg transform to the FT matrix and generating a transmission signal of a time domain.

公开(公告)号：US09519054B2

公开(公告)日：2016-12-13

申请号：US14254439

申请日：2014-04-16

Applicant: Electronics and Telecommunications Research Institute

Inventor： Bo Ra Kim ,  Nikolai Simonov ,  Seong-Ho Son ,  Soon Ik Jeon ,  Hyuk Je Kim ,  Jong Moon Lee ,  Hyung Do Choi

IPC: G01S13/89 ,  G01S13/88

CPC classification number: G01S13/89 ,  G01S13/88 ,  G01S13/887 ,  G01S13/888

Abstract: A method for reconstructing a dielectric image using electromagnetic waves, comprising: acquiring a measurement value of the electromagnetic waves; generating a matching system matrixes between the meshes; generating a smoothed dyadic Green's function matrix; generating an electromagnetic wave calculation value; calculating a misfit error between the acquired electromagnetic wave measurement value and the generated electromagnetic wave calculation value, and checking whether a change of the calculated misfit error satisfies a predetermined optimization determination condition; updating dielectric parameters at the meshes; and outputting a reconstructed dielectric image in the image reconstruction region.

Abstract translation: 一种使用电磁波重建电介质图像的方法，包括：获取电磁波的测量值; 在网格之间生成匹配系统矩阵; 产生一个平滑的二元格林函数矩阵; 产生电磁波计算值; 计算所获取的电磁波测量值与产生的电磁波计算值之间的误差误差，并且检查所计算的误差误差的变化是否满足预定的优化确定条件; 在网格上更新介质参数; 以及在所述图像重建区域中输出重构的电介质图像。

公开(公告)号：US09207191B2

公开(公告)日：2015-12-08

申请号：US14561336

申请日：2014-12-05

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jang Yeol Kim ,  Jong Moon Lee ,  Hyuk Je Kim ,  Seong Ho Son ,  Soon Ik Jeon

IPC: G01N22/00 ,  A61B6/00

CPC classification number: G01N22/00 ,  A61B5/0507 ,  A61B5/4312 ,  A61B6/44 ,  A61B2560/0252

Abstract: An apparatus and method of controlling a temperature of a matching material used in an apparatus for generating a tomographic image is disclosed. The method includes measuring a temperature of a matching material in which an object is immersed in an apparatus for measuring a shape of an object, setting a set temperature at which an amplitude and a phase of an electromagnetic wave that passes through the matching material are maintained, based on the measured temperature of the matching material, and controlling the temperature of the matching material to be higher than the set temperature.

Abstract translation: 公开了一种用于控制用于生成断层图像的装置中使用的匹配材料的温度的装置和方法。 该方法包括测量物体浸在用于测量物体形状的装置中的匹配材料的温度，设定保持通过匹配材料的电磁波的振幅和相位的设定温度 基于匹配材料的测量温度，并将匹配材料的温度控制为高于设定温度。