公开(公告)号：US09383450B2

公开(公告)日：2016-07-05

申请号：US13679985

申请日：2012-11-16

Applicant: Electronics and Telecommunications Research Institute

Inventor： Tae Hee Kim ,  Sang Uk Lee

IPC: G01S19/23

CPC classification number: G01S19/23

Abstract: Provided is an apparatus and method for generating a satellite navigation signal, the method including: extracting, navigation data that is a parameter required to generate a navigation message; verifying visible satellites at a current position of a receiver based on a position of the receiver and positions of satellites calculated based on navigation data; calculating a pseudo distance from each visible satellite and a Doppler of each visible satellite; calculating, as a Doppler period, a duration of time corresponding to a Doppler displacement capable of being processed at the receiver; generating a navigation message frame to generate a satellite navigation signal, based on navigation data and a TOW; and generating a satellite navigation signal of a digitized IF for each visible satellite based on the navigation message frame, the pseudo distance for each visible satellite, and the Doppler for each visible satellite during the Doppler period.

Abstract translation: 提供了一种用于生成卫星导航信号的装置和方法，所述方法包括：提取作为生成导航消息所需的参数的导航数据; 基于接收机的位置和基于导航数据计算的卫星的位置来验证接收机当前位置处的可见卫星; 从每个可见卫星和每个可见卫星的多普勒计算伪距离; 作为多普勒周期计算对应于能够在接收机处理的多普勒位移的持续时间; 基于导航数据和TOW生成导航消息帧以产生卫星导航信号; 以及在多普勒周期期间，基于导航消息帧，每个可见卫星的伪距离和每个可见卫星的多普勒，为每个可见卫星生成数字化IF的卫星导航信号。

公开(公告)号：US10162061B2

公开(公告)日：2018-12-25

申请号：US15003127

申请日：2016-01-21

Applicant: Electronics and Telecommunications Research Institute

Inventor： Tae Hee Kim ,  Jae Hoon Kim ,  Cheon Sig Sin

IPC: G01S19/21 ,  G01S19/31 ,  G01S19/48

Abstract: Provided is a global navigation satellite system (GNSS) navigation solution generating apparatus and method, the apparatus including a determiner to determine that a spoofing signal exists in a received GNSS signal when a signal having a receiving intensity greater than a predetermined receiving intensity of a normal signal by a predetermined value range is included in the received GNSS signal, a detector to re-detect the normal signal from the GNSS signal when the spoofing signal is determined to exist, and a calculator to generate a GNSS navigation solution by tracking the re-detected normal signal, wherein the predetermined value range is 3 to 5 decibels (dB).

公开(公告)号：US09383449B2

公开(公告)日：2016-07-05

申请号：US14049697

申请日：2013-10-09

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Tae Hee Kim ,  Sang Uk Lee

IPC: G01S19/21 ,  G01S19/35

CPC classification number: G01S19/215 ,  G01S19/35

Abstract: Provided is a method and apparatus for removing a spoofing signal. The apparatus may convert a global positioning system (GPS) signal from an RF signal to an IF signal, and remove a spoofing signal based on whether the spoofing signal is present in the RF signal. The apparatus may obtain and track the spoofing signal using the IF signal, and generate a characteristic of the spoofing signal. The apparatus may generate an anti-spoofing signal by shifting a phase of the spoofing signal 180 degrees based on the characteristic of the spoofing signal.

Abstract translation: 提供了一种去除欺骗信号的方法和装置。 该装置可以将全球定位系统（GPS）信号从RF信号转换为IF信号，并且基于欺骗信号是否存在于RF信号中去除欺骗信号。 该装置可以使用IF信号获取和跟踪欺骗信号，并产生欺骗信号的特征。 该装置可以基于欺骗信号的特性将欺骗信号的相位180度移位180度来产生防欺骗信号。