公开(公告)号：KR1020140002137A

公开(公告)日：2014-01-08

申请号：KR1020120069703

申请日：2012-06-28

Applicant: (주)와이파이브 ,  충남대학교산학협력단

Inventor： 성태경 ,  김희수

IPC: G01S19/01

Abstract: The present invention relates to a method for measuring a precise trajectory using a carrier-phase global positioning system (GPS) and, more specifically, includes a method for measuring a precise trajectory using a carrier-phase GPS, which includes: an initial position measurement step (S110) for obtaining the initial position of a mobile station by using a code measurement value of a GPS satellite signal; a precise position measurement step (S120) for calculating an estimated integer ambiguity by using a carrier measurement value and the code measurement value of the GPS satellite signal in the initial position measurement step, and for updating the position of the mobile station by the carrier measurement value and the integer ambiguity; and a detection and compensation step (S130) for detecting a cycle slip of the carrier measurement value by using a dead reckoning (DR) sensor, and for compensating for the position of the mobile station when the cycle slip of the carrier measurement value is generated. [Reference numerals] (AA) Start; (BB) End; (S110) Initial position measurement step; (S120) Precise position measurement step; (S130) Detection and compensation step; (S140) Sensor fusing step

Abstract translation: 本发明涉及一种使用载波相位全球定位系统（GPS）测量精确轨迹的方法，更具体地说，涉及一种使用载波相位GPS测量精确轨迹的方法，该方法包括：初始位置测量 步骤（S110），用于通过使用GPS卫星信号的码测量值来获得移动台的初始位置; 精确位置测量步骤（S120），用于通过在初始位置测量步骤中使用载波测量值和GPS卫星信号的码测量值来计算估计的整数模糊度，并且通过载波测量来更新移动台的位置 值和整数模糊度; 以及检测和补偿步骤（S130），用于通过使用推算（DR）传感器来检测载波测量值的周期滑移，并且用于在产生载波测量值的周期滑移时补偿移动台的位置 。 （附图标记）（AA）开始; （BB）结束; （S110）初始位置测量步骤; （S120）精确位置测量步骤; （S130）检测和补偿步骤; （S140）传感器熔断步骤

公开(公告)号：KR1020120070772A

公开(公告)日：2012-07-02

申请号：KR1020100132218

申请日：2010-12-22

Applicant: 충남대학교산학협력단

Inventor： 이창은 ,  임현자 ,  성태경

IPC: G01S19/25 ,  G01S19/05 ,  G01R23/02

CPC classification number: G01S19/31 ,  G01R23/02 ,  G01S19/05 ,  G01S19/25 ,  G01S19/254 ,  G01S19/35 ,  G01S19/42

Abstract: PURPOSE: A residual frequency estimator is provided to minimize loss caused in an AGPS(Assisted Global Positioning System) receiver during synchronous integration and asynchronous integration and more reliably detect signals in a region with low intensity of GPS signals. CONSTITUTION: A plurality of correlators(104) divides data bit stream of a received signal by a predetermined cycle and outputs the divided signals. An FFT unit(108) receives data bit streams of regular length output from the correlators and implements FFT(Fast Fourier Transform). An asynchronous accumulator(110) asynchronously accumulates the FFT-processed bit streams. A coarse residual frequency estimator(114) searches the maximum value exceeding a predetermined threshold from the frequencies of the asynchronously accumulated signals and calculates an estimated residual frequency. A fine residual frequency estimator(116) computes the estimated residual frequency through MLE(Maximum Likelihood Estimation) to obtain the final estimated residual frequency.

Abstract translation: 目的：提供一个残余频率估计器，以在同步整合和异步集成期间最大限度地减少AGPS（辅助全球定位系统）接收机造成的损耗，并更可靠地检测GPS信号强度低的区域中的信号。 构成：多个相关器（104）将接收信号的数据比特流除以预定的周期，并输出划分的信号。 FFT单元（108）从相关器接收经常长度输出的数据比特流，并实现FFT（快速傅里叶变换）。 异步累加器（110）异步地累积经FFT处理的比特流。 粗残余频率估计器（114）根据异步累积信号的频率搜索超过预定阈值的最大值，并计算估计的残差频率。 精细残余频率估计器（116）通过MLE（最大似然估计）计算估计的残余频率，以获得最终估计的残余频率。

公开(公告)号：KR101101987B1

公开(公告)日：2012-01-02

申请号：KR1020090107824

申请日：2009-11-10

Applicant: 충남대학교산학협력단

Inventor： 성태경

IPC: H04W64/00 ,  H04B7/26

Abstract: 본 발명은 무선 측위 망에서 오차요소의 선 보상을 통한 이동 노드의 위치 추정 갱신 주기 단축 및 측위 정확도 향상 방법을 제공한다.
이를 위해 본 발명의 일실시 예는 SDS-TWR(Symmetric Double Sided - Two Way Ranging) 방식과 TWR 방식을 혼용하여, 무선 측위망의 초기화 과정에서 각 노드들의 H/W 내부 지연 시간과 클럭 오프셋값을 추정하여 그 추정치를 위치 추정 서버에 저장하고, 망의 초기화 이후의 측위시, 이를 이용하도록 함으로써 측위(location) 절차를 단순화하고 측위의 정확도를 향상시키는 방법을 개시한다.
본 발명에 따르면, 무선 측위망에서 각 노드들의 H/W 내부 지연 시간과 클럭 오프셋을 모두 추정하여 이들 추정치를 위치 추정 서버에서 별도로 관리하고 측위 절차시, 각 노드들의 추가적인 메시지 교환없이 이들 추정치를 사용하므로 측위 절차가 간편하다.
망, SDS-TWR, TWR, H/W internal delay, clock offset

公开(公告)号：KR101092331B1

公开(公告)日：2011-12-09

申请号：KR1020100012638

申请日：2010-02-11

Applicant: 충남대학교산학협력단

Inventor： 성태경 ,  송승헌

IPC: H04W64/00 ,  G01S5/02

Abstract: 본발명의일실시예에따른하향링크프리앰블신호를이용한와이브로(WiBro;Wireless Broadband) 기반측위시스템은, 와이브로단말이소속되지않은인근의기지국신호를원활히검출하기위하여간섭제거과정과장기중첩과정및 위치인지과정을거쳐와이브로단말기에고정밀위치정보를제공할수 있도록하는것이다. 와이브로단말에서프리앰블심볼의수신신호의지연시간차이와 TDOA 기법을이용하여높은정밀도로단말의위치를추정하는것이다.

公开(公告)号：KR1020110092930A

公开(公告)日：2011-08-18

申请号：KR1020100012638

申请日：2010-02-11

Applicant: 충남대학교산학협력단

Inventor： 성태경 ,  송승헌

IPC: H04W64/00 ,  G01S5/02

CPC classification number: H04W64/00 ,  G01S5/0215 ,  H04W4/02

Abstract: PURPOSE: A Wibro based positioning system using a downlink preamble signal is provided to simultaneously apply an interference signal removing method and a synchronization device overlapping method. CONSTITUTION: A frequency estimating unit estimates and compensates a residual frequency error about a signal which is received from a receiver. A device overlapping part performs a synchronization device overlapping about preamble signals which are repeatedly generated. An interference canceling unit eliminates signals from a received downlink preamble signals by turns. A location recognition part estimates the location of a terminal using a delay time estimation unit and the location information of base stations.

Abstract translation: 目的：提供一种使用下行链路前导信号的基于Wibro的定位系统，以同时应用干扰信号去除方法和同步装置重叠方法。 构成：频率估计单元估计和补偿关于从接收机接收的信号的残余频率误差。 设备重叠部分执行与重复产生的前导码信号重叠的同步设备。 干扰消除单元依次从接收的下行链路前导信号中消除信号。 位置识别部分使用延迟时间估计单元估计终端的位置和基站的位置信息。