公开(公告)号：KR1020040074313A

公开(公告)日：2004-08-25

申请号：KR1020030009858

申请日：2003-02-17

Applicant: 재단법인서울대학교산학협력재단

Inventor： 윤두희 ,  기창돈

IPC: G01S13/00

Abstract: PURPOSE: A wide area pseudolite navigation system is provided to extend an area where a position of a user be checked. CONSTITUTION: A plurality of cells are formed so that a part of an area formed by one cell is overlapped with a part of an area formed by an adjacent cell. Each cell has a main pseudolite and a plurality of sub pseudolites and a cell reference station to synchronize a clock of the sub pseudolites to a clock of the main pseudolite. Local reference stations(210,220,230) are installed on the overlapped area, and receive and output a distance measurement signal transmitted from the main pseudolite of the cells including the area where it is installed. A main reference station(300) receives the distance measurement signal from the local reference stations, and generates a command synchronizing the clocks of the main pseudolites to a reference clock of its own, and outputs the command toward the main pseudolites.

Abstract translation: 目的：提供广泛的伪卫星导航系统来扩展用户检查位置的区域。 构成：形成多个单元，使得由一个单元形成的区域的一部分与由相邻单元形成的区域的一部分重叠。 每个单元具有主伪像和多个子伪像，以及单元参考站，以将子伪像的时钟与主伪造的时钟同步。 本地参考站（210,220,230）安装在重叠区域，并接收并输出从包含安装区域的单元的主伪造发送的距离测量信号。 主参考站（300）从本地参考站接收距离测量信号，并产生将主伪卫星的时钟同步到其本身的参考时钟的命令，并将该命令输出给主伪造。

公开(公告)号：KR1020090022681A

公开(公告)日：2009-03-04

申请号：KR1020070088237

申请日：2007-08-31

Applicant: 재단법인서울대학교산학협력재단

Inventor： 기창돈 ,  김도윤 ,  박병운 ,  이택진 ,  전상훈 ,  최수진 ,  김보성

IPC: G06T17/00 ,  G09B9/00

CPC classification number: G01S19/11 ,  G01S19/243 ,  G06T19/006

Abstract: A virtual space simulator utilizing a navigation server and a system using the same are provided to overcome disadvantage of the virtual space simulator corresponding to the movement of the virtual space and the movement of the actual space. A wireless communications module(220) sends and receives a GPS(Global Positioning System) signal related to location and virtual space of the terminal to a navigation server. A navigation sign calculation module(230) computes and analyzes the navigation signal generated from the wireless communications module. A memory(260) stores data about the location of the terminal calculated from the navigation sign calculation module. A microcomputer(240) transmits the location of the terminal calculated in the navigation sign calculation module to the navigation server through the wireless communications module. The positioning signal transmitted from the navigation server is controlled. A display unit(250) indicates the virtual space program controlled from microcomputer by outside.

Abstract translation: 提供了使用导航服务器的虚拟空间模拟器和使用其的系统，以克服虚拟空间模拟器对应于虚拟空间的移动和实际空间移动的缺点。 无线通信模块（220）向导航服务器发送和接收与终端的位置和虚拟空间相关的GPS（全球定位系统）信号。 导航符号计算模块（230）计算并分析从无线通信模块生成的导航信号。 存储器（260）存储关于从导航符号计算模块计算的终端的位置的数据。 微型计算机（240）通过无线通信模块将在导航符号计算模块中计算出的终端的位置发送到导航服务器。 控制从导航服务器发送的定位信号。 显示单元（250）指示由外部由微型计算机控制的虚拟空间程序。

公开(公告)号：KR1020080028276A

公开(公告)日：2008-03-31

申请号：KR1020070086112

申请日：2007-08-27

Applicant: 재단법인서울대학교산학협력재단

Inventor： 기창돈 ,  이택진 ,  박병운

IPC: G01S5/02 ,  G01S5/00

Abstract: A self-positioning system of a two-way pseudolite is provided to rapidly form a navigation environment at a predetermined position at any time by positioning the pseudolite in real time irrespective of movement of the pseudolite. A self-positioning system of a two-way pseudolite comprises at least one two-way pseudolite module(201a,201b), a two-way peudolite carrier, reference stations(202a,202b,202c,202d), and a central processing device(203). The at least two-way pseudolite module receives and transmits a navigation signal. The two-way pseudolite carrier moves the two-way pseudolite. The reference stations receive the navigation signal to transmit the signal. The central processing device receives measured values transmitted from each of the reference stations and the two-way pseudolite and combines the measured values to position the pseudolite.

Abstract translation: 提供双向伪卫星的自定位系统，以便在伪随机的移动的情况下，通过实时定位伪卫星而在任何时间快速地形成在预定位置处的导航环境。 双向伪卫星的自定位系统包括至少一个双向伪卫星组件（201a，201b），双向长方柱载体，参考站（202a，202b，202c，202d）和中央处理装置 （203）。 至少双向伪卫星模块接收和发送导航信号。 双向伪卫星载体移动双向伪卫星。 参考站接收导航信号以发送信号。 中央处理装置接收从每个参考站和双向伪卫星传输的测量值，并将测量值组合以对伪卫星进行定位。

公开(公告)号：KR1020070050144A

公开(公告)日：2007-05-15

申请号：KR1020050107372

申请日：2005-11-10

Applicant: 재단법인서울대학교산학협력재단

Inventor： 기창돈 ,  전해영

IPC: H04B1/7077 ,  H04W56/00

Abstract: 본 발명은 확산 대역 신호를 이용하는 수신기에서의 신호의 동기 획득 방법 및 그 장치에 관한 것으로서, 본 발명에 따르면 하드웨어 상관기를 이용하여 상관값을 얻는 종래의 수신기 구조를 그대로 이용하면서도, 전체 또는 일부의 코드 위상에 대하여 구한 상관값을, 전체 범위의 코드 위상에 대하여 이미 계산하여 저장하여 가지고 있는 상관값 테이블에 저장된 값과 처리하여 일치하는 부분을 찾음으로써, 모든 후보 신호에 대한 상관 신호 발생 및 상관 과정이 없이도 모든 수신 신호의 도플러 오프셋과 코드 위상을 확인하여 신호의 동기 획득을 신속하게 이룰 수 있다.
확산 대역 신호, 신호의 동기 획득, 교차 상관, GPS

公开(公告)号：KR1020030063613A

公开(公告)日：2003-07-31

申请号：KR1020020003826

申请日：2002-01-23

Applicant: 재단법인서울대학교산학협력재단

Inventor： 기창돈 ,  김정한

IPC: G01S5/02

Abstract: PURPOSE: A correction information generating, transmitting and receiving method for a satellite navigation accurate real-time kinematic(RTK) and an apparatus for the same are provided to increase the endurance for the data communication time delay of the RTK-GPS correction data as well as to minimize the additional RTK-GPS accuracy position error due to the data time delay. CONSTITUTION: A correction information generating, transmitting and receiving method for a satellite navigation accurate real-time kinematic(RTK) includes the steps of: a first step of extracting various GPS navigation data from GPS receivers(10,21); a second step of calculating the distance and satellite time error from the GPS reference station to various GPS satellite; a third step of estimating the GPS time error of the GPS receivers(10,21) of the GPS reference station by using the various GPS data; a fourth step of generating RTK-GPS correction information through the various GPS data; a fifth step of transmitting the RTK-GPS correction data; a sixth step of compensating the data communication time delay error; and a seventh step of reconstructing the GPS quasi distance measurement value and the carrier wave phase correction value of the GPS reference station from the RTK-GPS correction data.

Abstract translation: 目的：提供用于卫星导航精确实时运动学（RTK）的校正信息生成，发送和接收方法及其装置，以增加RTK-GPS校正数据的数据通信时间延迟的耐久性 以最小化由于数据时间延迟引起的附加RTK-GPS精度位置误差。 构成：用于卫星导航精确实时运动学（RTK）的校正信息生成，发送和接收方法包括以下步骤：从GPS接收机（10,21）提取各种GPS导航数据的第一步骤。 计算从GPS参考站到各种GPS卫星的距离和卫星时间误差的第二步骤; 第三步骤，通过使用各种GPS数据来估计GPS参考站的GPS接收机（10,21）的GPS时间误差; 通过各种GPS数据生成RTK-GPS校正信息的第四步骤; 发送RTK-GPS校正数据的第五步骤; 补偿数据通信时延误差的第六步; 以及从RTK-GPS校正数据重构GPS准距离测量值和GPS参考站的载波相位校正值的第七步骤。

公开(公告)号：KR1020030038449A

公开(公告)日：2003-05-16

申请号：KR1020020068341

申请日：2002-11-06

Applicant: 재단법인서울대학교산학협력재단

Inventor： 기창돈 ,  윤두희

IPC: G01S5/14

CPC classification number: G01S19/11 ,  G01S1/20 ,  G01S19/46

Abstract: PURPOSE: An accurate navigation system using a synchronous pseudolite is provided to calculate correctly a position regardless of the information of a base station by synchronizing clocks of a pseudolite. CONSTITUTION: A main pseudolite(401) has a reference clock of a navigation system. One or more sub pseudolites(403) includes a digitally controlled numerical controller oscillator portion(405). A mobile(409) determines its own position by using a clock synchronization signal received from the main pseudolite(401) and the sub pseudolites(403). A clock synchronization loop filter portion(407) generates the synchronization information of the sub pseudolite(403) on the basis of the pseudo distance information and the carrier phase information of the main pseudolite(401) and the sub pseudolites(403) and transmits the synchronization information to the digitally controlled numerical controller oscillator portion(405).

Abstract translation: 目的：提供使用同步伪卫星的精确导航系统，通过同步伪卫星的时钟，正确地计算位置，而不管基站的信息。 构成：主伪卫（401）具有导航系统的参考时钟。 一个或多个子伪卫（403）包括数字控制的数字控制器振荡器部分（405）。 移动台（409）通过使用从主伪造物（401）和子伪像（403）接收到的时钟同步信号来确定其自己的位置。 时钟同步环路滤波器部分（407）根据伪伪距（401）和子伪卫星（403）的伪距离信息和载波相位信息，生成子伪卫星（403）的同步信息，并发送 同步信息到数字控制数字控制器振荡器部分（405）。