公开(公告)号：US08958511B2

公开(公告)日：2015-02-17

申请号：US14024211

申请日：2013-09-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： In One Joo ,  Jeom Hun Lee ,  Cheon Sig Sin ,  Sang Uk Lee

IPC: H04K3/00

CPC classification number: H04K3/228 ,  H04K3/22 ,  H04K3/90

Abstract: A system and method for detecting broadband global positioning system (GPS) jamming is provided, the system including a local oscillator maintainer to maintain a plurality of local oscillators, a frequency band selector to select a frequency band in which jamming is to be detected, in response to receipt of a radio frequency (RF) signal, an oscillating signal output unit to allow an oscillating signal to be output from a local oscillator identified based on the selected frequency band, among the plurality of local oscillators, and an intermediate frequency (IF) signal generator to generate an IF signal using the RF signal and the oscillating signal.

Abstract translation: 提供了一种用于检测宽带全球定位系统（GPS）干扰的系统和方法，该系统包括本地振荡器维护器以维持多个本地振荡器，频带选择器选择要检测到干扰的频带， 响应于接收射频（RF）信号，振荡信号输出单元，以允许从多个本地振荡器中基于所选频带识别的本地振荡器输出振荡信号，以及中频（IF ）信号发生器，以使用RF信号和振荡信号来产生IF信号。

公开(公告)号：US09939513B2

公开(公告)日：2018-04-10

申请号：US14628315

申请日：2015-02-23

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jeom Hun Lee ,  Jae Hoon Kim ,  Sang Uk Lee ,  In One Joo

IPC: G01S3/58 ,  G01S3/20 ,  G01S3/46

CPC classification number: G01S3/58 ,  G01S3/20 ,  G01S3/46

Abstract: Disclosed is a hybrid direction detection apparatus and method that may perform a precise direction detection through a one-time rotation of a log period (LP) antenna and a one-time phase difference measurement of a dipole antenna and may remove an ambiguity error of the LP antenna by two dipole antennas spaced apart by a distance of about 0.5λ by finding an approximate direction using the LP antenna that is a directional antenna, by measuring a phase difference between arrival waves using two baselines including two dipole antenna in the corresponding direction, and thereby precisely finding a final direction.

公开(公告)号：US09304182B2

公开(公告)日：2016-04-05

申请号：US13766004

申请日：2013-02-13

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jeom Hun Lee ,  In One Joo ,  Myung Soon Kim ,  Cheon Sig Sin ,  Sang Uk Lee

IPC: G01S5/04 ,  G01S3/48 ,  G01S3/58 ,  G01S5/14

CPC classification number: G01S3/48 ,  G01S3/58 ,  G01S5/04 ,  G01S5/14

Abstract: A hybrid direction apparatus and method that rapidly and accurately detects a direction of a radio signal source based on a direction detecting scheme by comparing an amplitude or signal strength, a virtual Doppler scheme, a phase difference comparison scheme while removing an ambiguity based on an amplitude or signal strength scheme, and identify a direction relatively precisely based on a phase difference scheme using only two antennas. Also, an arrival direction of a relative radio wave when an arrival direction of a radio wave is vertical to a single rotating axis may be precisely identified by mounting a directional antenna and a phase comparison antenna on the single rotating axis, and rotating the two antennas.

Abstract translation: 一种混合方向装置和方法，其通过比较幅度或信号强度，虚拟多普勒方案，相位差比较方案，基于方向检测方案快速准确地检测无线电信号源的方向，同时基于振幅消除模糊度 或信号强度方案，并且基于仅使用两个天线的相位差方案来相对精确地识别方向。 此外，通过在单个旋转轴上安装定向天线和相位比较天线，可以精确地识别当无线电波的到达方向垂直于单个旋转轴时的相对无线电波的到达方向，并且旋转两个天线 。