公开(公告)号：US20170329743A1

公开(公告)日：2017-11-16

申请号：US15595094

申请日：2017-05-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Chung Sup KIM ,  Kanghee KIM ,  Sang-Won KIM ,  Ki Cheol TAE ,  Heung Yong KANG ,  Yong-Seok CHOI

IPC: G06F17/14 ,  H04L27/26

CPC classification number: G06F17/141 ,  H04L27/265

Abstract: An apparatus for calculating a reception time of a wireless communication signal is disclosed. The apparatus includes a downconverted signal generator configured to generate a downconverted signal, a baseband signal, by downconverting a frequency of a signal received from a transmission source, a modulated signal generator configured to generate a modulated signal by multiplying the downconverted signal by a randomly generated reference signal, a time difference calculator configured to calculate a time difference between the modulated signal and the reference signal by cross-correlating the modulated signal and the reference signal, and a reception time calculator configured to calculate a reception time of the signal received from the transmission source using a point in time at which the reference signal is generated and the time difference between the modulated signal and the reference signal.

公开(公告)号：US20170324436A1

公开(公告)日：2017-11-09

申请号：US15584703

申请日：2017-05-02

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kanghee KIM ,  Sang-Won KIM ,  Ki Cheol TAE ,  Yong-Seok CHOI

IPC: H04B1/18 ,  H04B1/525 ,  H04B1/08 ,  H04B17/21 ,  H04B7/02 ,  H04B1/44 ,  H04B17/14

Abstract: Disclosed is a digital radio frequency (RF) signal receiving apparatus including an RF filter configured to convert multichannel wireless signals received through an antenna into signals available for digital sampling, an analog-to-digital converter configured to perform digital sampling on the multichannel wireless signals converted by the RF filter, a digital processor configured to perform filtering on each of the digital-sampled multichannel wireless signals into a plurality of bandwidth signals within a maximum bandwidth range simultaneously, and down-convert the filtered multichannel wireless signals to be signals in a baseband, a data formatter configured to format the down-converted signals based on an input/output data form of transmission interfaces, and a data transmitter configured to simultaneously transmit each of formatted signals to a corresponding processing platform.

公开(公告)号：US20150071310A1

公开(公告)日：2015-03-12

申请号：US14211812

申请日：2014-03-14

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sang Tae KIM ,  Gwangmoon PARK ,  Seong Yun LEE ,  Haeng Sook RO ,  Mi-Kyung SUK ,  Yong-Seok CHOI

IPC: H04L7/00

CPC classification number: H04B7/0874 ,  H04B7/086

Abstract: A radio measurement apparatus comprising: an array antennal selection unit selecting array antennas corresponding to received signals; a reference path selection unit selecting a reference array antenna; a signal processing unit selecting a reference antenna channel through analysis of signal characteristics measured through two reception channels; a sequential channel multiplex unit determining sequentially inputting received signals of remaining array antennas to output the sequentially input signals to a receiver; and a correction signal input unit compensating amplitude and phase characteristics of the respective reception channels.

Abstract translation: 一种无线电测量装置，包括：阵列天线选择单元，选择与接收信号相对应的阵列天线; 参考路径选择单元，选择参考阵列天线; 信号处理单元，通过分析通过两个接收信道测量的信号特性来选择参考天线信道; 顺序信道多路复用单元确定顺序输入剩余阵列天线的接收信号，以将顺序输入的信号输出到接收机; 以及校正信号输入单元，用于补偿各个接收信道的幅度和相位特性。

公开(公告)号：US20180336076A1

公开(公告)日：2018-11-22

申请号：US15979169

申请日：2018-05-14

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Eun-Ji LIM ,  Shin-Young AHN ,  Yong-Seok CHOI ,  Young-Choon WOO ,  Wan CHOI

IPC: G06F9/54 ,  G06F15/18 ,  G06F9/52

CPC classification number: G06F9/544 ,  G06F9/52 ,  G06F15/167 ,  G06N20/00

Abstract: Disclosed herein are a parameter-sharing apparatus and method. The parameter-sharing apparatus includes a memory allocation unit for managing allocation of a memory area, in which a parameter is to be stored, to a memory box, and updating a mapping table stored in the memory box based on allocation management of the memory area, and an operation processing unit for providing the memory allocation unit with parameter information required for the allocation management of the memory area in which the parameter is to be stored and sharing the parameter stored in the memory box.

公开(公告)号：US20140064349A1

公开(公告)日：2014-03-06

申请号：US14051525

申请日：2013-10-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： Gwangmoon PARK ,  Sang-Tae KIM ,  Seong-Yun LEE ,  Haeng-Sook RO ,  Mi-Kyung SUK ,  Heung-Yong KANG ,  Yong-Seok CHOI

IPC: G01S3/04

CPC classification number: G01S3/046 ,  G01S3/043 ,  G01S3/74 ,  G01S5/04

Abstract: A digital spectrum analysis apparatus and method for direction finding (DF) and location is provided. The digital spectrum analysis apparatus includes: a multi-channel unit configured to convert signals inputted from antennas into digital signals, reduce a sampling rate of the digital signals by using a digital down converter (DDC), and convert the digital signals into baseband complex signals, and having a plurality of channels; a DF estimator configured to estimate the direction of the signal; a spectrum processing unit configured to map any one of a bearing and a power level of the baseband complex signal into coordinate system, and allocate different colors to one of the bearings and the power levels depending on the accumulation ratio of one of the bearing and the power level; and a display unit configured to display the power level and the bearing with colors.

Abstract translation: 提供了一种用于方向查找（DF）和位置的数字频谱分析装置和方法。 数字频谱分析装置包括：多通道单元，被配置为将从天线输入的信号转换为数字信号，通过使用数字下变频器（DDC）降低数字信号的采样率，并将数字信号转换为基带复合信号 并具有多个通道; DF估计器，被配置为估计所述信号的方向; 频谱处理单元，被配置为将所述基带复合信号的方位和功率电平中的任一个映射到坐标系中，并且根据所述轴承和所述轴承的一个的累积比，将不同的颜色分配给所述轴承和所述功率电平中的一个 能量等级; 以及显示单元，被配置为用颜色显示功率水平和轴承。