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        2015 KGS Conference Proceedings | 
    
    
     
        
        
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            Accuracy Analysis of SBAS Satellite Orbit and Clock Corrections      Youn-Jeong Heo*, Hyun-Jin Jang, Jong-Yeon Choi, Gi-Wook Nam          | 
    
    
     
        
        
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            A Study on Requirement Development of KASS OT&E Tool      Jae Min Kang*, Kwang Sik Ghoi, Hee Sung Kim, Eun Sung Lee, Jiae Han, Gi Wook Nam          | 
    
    
     
        
        
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            Study of RTCA/DO-178 Software Development Process for KASS Control Station      Jae-Ik Park*, Eunsung Lee, Gi-Wook Nam          | 
    
    
     
        
        
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            A Study on Simulation Platform Design for KASS Availability Analysis      Jae-Eun Lee*, Heon Ho Choi, Chul-Hee Choi, Eunsung Lee, Gi Wook Nam          | 
    
    
     
        
        
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            A Study on Communication Network Design for KASS      Chul-Hee Choi*, Heon Ho Choi, Woonki Hong, Eunsung Lee          | 
    
    
     
        
        
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            Transmission Scheduling Technique of GNSS Pseudorange Correction on DGNSS Reference Station for Multi GNSS Service Envir…      Wonseok Jang*, Youngki Kim, Kiyeol Seo          | 
    
    
     
        
        
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            Performance Evaluation of GPS Signal Tracking Loop in GPS/INS Integrated Navigation System      Moonsuk Koo*, Sang Heon Oh, Dong-Hwan Hwang          | 
    
    
     
        
        
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            Design of Jamming Signal Generator for GNSS Receiver Anti-jamming Test      Joon-Kyung Sung, Jong-Seong Kim, Jae-Sin Lee, Jung-Gab Joo, Seok Bo Son*          | 
    
    
     
        
        
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            Development of a Test System for Anti-Jamming Functionality of 7-Channel Anti-Jamming GNSS Receiver      Jeongwoo Han, Kihyun Jeon, Jun-O Kim*          | 
    
    
     
        
        
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            Anti-Jamming Algorithm Performance Analysis for the Relative Arrangement in Space Between the Group of Jammers and the V…      Jae-Gun Choi*, Jun-O Kim , Tae-Gyoo Lee, Sang-Wook Choi          | 
    
    
     
        
        
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            Research on the Test and Evaluation Method of Anti-Jamming GNSS Receiver      Jung-Woo Han, Woo-Sung Chung, Jae-Jin Han, Chang-Seok You, Jun-O Kim*          | 
    
    
     
        
        
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            A Development of Smart DGPS Beacon Receiver      Yong-Rok Oh*, Jin-Ho Jeong, Yong-kwon Choi, Sang Jeong Lee          | 
    
    
     
        
        
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            A Study on Comparison Results of Navigation Accuracy Among Satellite Navigation Modes for Precise Navigation      Kang sun Suh*, Joon-Sung Bae          | 
    
    
     
        
        
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            Technique of 7- Element Array Antenna design for High Gain Realization      Jae-Jin Han, Jin-Won Park, Jun-O Kim*          | 
    
    
     
        
        
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            RF Front-End Design and Implementation for LEO Satellite GNSS Receiver for Mounting      Jin-Mo Park, Geun-Hee Lee, Jin-Ho Jeong, Yong-Hoi Park, Ki-Ho Kwon, Ju-Ho Park          | 
    
    
     
        
        
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            Performance Evaluation for the 7 Channel Anti-jamming System of High Dynamic Vehicle in Multiple Jamming Environment      Jun-O Kim*, Woo-Sung Jung, Jae-Gun Choi, Sang-Wook Choi          | 
    
    
     
        
        
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            Location Estimation Performance Analysis for DOP in Multi-CAF MAP      Jaehyun Kim*, Sanguk Lee, Woo-Geun Ahn          | 
    
    
     
        
        
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            Analysis of Integrity Monitoring Performance for Real-Time Precise Positioning Module on Land Transportation Vehicle      Sung-Hyuck Im*, JongSun Ahn, Byung-Hyun Lee, Ju-Kyoung Kim, Eun-Sung Lee, Moon Beom Heo, Young Jae Lee, Gyu-In Jee          | 
    
    
     
        
        
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            Basic Study on Localization of Assisted-GNSS Algorithm      Hyun-Ho Kim, Jihyun Ha          | 
    
    
     
        
        
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            Performance Analysis of Reference Point Matching Methods in Wi-Fi Fingerprint-based Indoor Localization      Myungin Ji, Jooyoung Kim, Juil Jeon, Sangjoon Park, Youngsu Cho          | 
    
    
     
        
        
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            Pulsed Signal Analysis for Local Navigation System      Il-Kyu Park, Seok-Bo Son, Sang-Jeong Lee*          | 
    
    
     
        
        
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            High Resolution Grid Based Ionospheric Irregularity Monitoring Method Using Local Area Reference Stations      Jung-Min Joo*, Moon-Beom Heo          | 
    
    
     
        
        
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            Development of Korea GNSS CORS Monitoring Software      Yong-Hoi Park, Jin-Mo Park, Geun-Hee Lee, Jun-Cheol Moon*          | 
    
    
     
        
        
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            Design of the Method for Generating the Multi Interference Signal      Taehee Kim, Cheon Sig Sin          | 
    
    
     
        
        
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            Performance of SBAS System for Different GEO Transponder Bandwidths      Moonhee You*, Cheon Sig Sin          | 
    
    
     
        
        
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            Design of Receiver and Algorithm for eLoran      Jyung-Kyu Lee*, Seung-il Lee, Sang-Jun Yun          | 
    
    
     
        
        
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            Design of Aircraft-Mounted CFT POD and Test Method      Jae-Jin Han, Jun-Hyuk Lee, Woo-Sung Chung, Chang-Suk Yoo, Jae-Gun Choi*          | 
    
    
     
        
        
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            Configuration of Land Transportation Infrastructure System based on GPS for Real-Time Operation      Eunseong Son*, Koon-Tack Kim, Sung-Hyuck Im, Moon-Boem Heo          | 
    
    
     
        
        
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            Receiver for GPS L1 Signal by Using RF Direct Sampling Method      Yu-Jun Won, Jong-Won Choi, Hyo-Joong Kang, Kwi-Woo Park, Min-Jun Lee, Chan-Sik Park, Bo-Seok Seo*          | 
    
    
     
        
        
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            GINS Modules Developed for the Unmanned Air Vehicle Attitude Heading and Positioning      Jin-Ho Jeong, Yong-Seung Lee, Yong-Hoi Park, Jin-Mo Park          | 
    
    
     
        
        
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            Searching Area Reduction of Intensity Map using Vision and Lane Map      Tae-Ki Jung, Byung-Hyun Lee, Sung-Hyuck Im, Moon-Beom Heo, Gyu-In Jee*          | 
    
    
     
        
        
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            Vehicle Navigation Algorithm Based on Tightly Coupled Integration using Multiple Receiver      Jong-Hwa Song*, Gyu-In Jee          | 
    
    
     
        
        
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            Requirement and Architecture of Positioning System Standard for Public Safety      Jaehyuk Choi*, Youngsu Cho, Myungin Ji, Jooyoung Kim, Sangjoon Park          | 
    
    
     
        
        
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            Method for Position Estimation using Inter-Satellite Range Measurement      Moonseok Choi*, Jongsun Ahn, Sangkyung Sung, Jaegyu Jang, Young Jae Lee          | 
    
    
     
        
        
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            Ionospheric and Tropospheric Affection of Precise Positioning of KASI GNSS Permanent Site in Micronesia and Its Status R…      Jong-Kyun Chung*, Sung-Moon Yoo, Han-Earl Park, Jungho Cho          | 
    
    
     
        
        
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            Statistical Analysis of Ionospheric Storms on GPS TEC between 2000 and 2010 in Korea      Jong-Kyun Chang*          | 
    
    
     
        
        
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            Evaluation of the KSLV-II GNSS Receiver’s Timing Accuracy      Yong-Sul Shin*, Byung-Moon Kwon, Ji-Hyeon Moon, Byeong-Joo Min          | 
    
    
     
        
        
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            Design and Tests of the GNSS Receiver System for KSLV-II      Byung-Moon Kwon*, Yong-Sul Shin, Ji-Hyeon Moon, Byeong-Joo Min          | 
    
    
     
        
        
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            The Accuracy Prediction of GPS Satellites Position, Velocity and Acceleration Using GPS CNAV Data      Sun-Kyoung Yu*, Ghang-Ho Kim, Changdon Kee          | 
    
    
     
        
        
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            Analysis of the Effect of Multipath Signal on the Code Measurement Based on the Measurement Model      Sunyong Lee, Yunsub Choi, Sunglyong Cho, Moon Beom Heo, Chansik Park, Sang Jeong Lee*          | 
    
    
     
        
        
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            Ionospheric Delay Model Monitoring using Dual-frequency Measurements      Choongwon Song*, Jongsun Ahn, Sangkyung Sung, Jung Min Joo, Moon Beom Heo, Young Jae Lee          | 
    
    
     
        
        
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            Extension of Ionospheric Map Coverage by Using Least-Square Methods      Mingyu Kim, Jeongrae Kim*, Young Jae Lee, Jaegyu Jang          | 
    
    
     
        
        
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            Establishment Status on Operating System of LX GNSS Network      Hyun-Ho Kim*, Jihyun Ha          | 
    
    
     
        
        
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            Software Implementation of Measurement Asynchronism in Multi-Radio Integrated Navigation System and Its Navigation Perfo…      Moonsuk Koo*, Hyoungmin So, Sang Heon Oh, Dong-Hwan Hwang          | 
    
    
     
        
        
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            Analysis of Positioning Accuracy Using LX GNSS Network RTK System      Jihyun Ha*, Wan-Seok Jung, Hyun-Ho Kim, Sang-Gu Kang          | 
    
    
     
        
        
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            Performance Analysis of Combined Point Positioning using Multi-GNSS Measurements in South Korea      Byung-Kyu Choi*, Chang-Hyun Cho, Sang Jeong Lee          | 
    
    
     
        
        
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            System Design and Performance Analysis of DGPS/INS Tightly Coupled Integration for Maritime Precise Tasks      Sul Gee Park*, Tae Hyun Fang          | 
    
    
     
        
        
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            Study on Requirements for Maritime SBAS      Sang Hyun Park*, Ki Yeol Seo, Tae Hyun Fang          | 
    
    
     
        
        
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            Performance Assessment on Integrity Monitoring and Reliability Provision of Port PNT Information      Ki-Yeol Seo, Mi-Young Shin, Young-Ki Kim, Won-Seok Jang, Sang-Hyun Park, Tae-Hyun Fang          | 
    
    
     
        
        
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            An Application Possibility of GPS Implementation to AIS/VTS      Sangheon Lee*, Sul Gee Park, Tae Hyun Fang          | 
    
    
     
        
        
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            Van Test to Evaluate Transfer Alignment Performance of GPS/INS Navigation System      Byung-il Seo, Dong-Ho Shin*          | 
    
    
     
        
        
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            A Research on Construction Plan of Post-Processing GNSS Reference Navigation Information for Performance Assessment of N…      Kang sun Suh*, Joon-Sung Bae          | 
    
    
     
        
        
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            Development of Operation Simulator for Accelerated Life Testing      Ji-Hee Park*, Jeong Yeol Kim, Dong-Ho Shin          | 
    
    
     
        
        
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            Test Result of Pulsed Navigation Signal in Ground-based Radio Navigation System      Woo-Guen Ahn*, Seungwoo Seo, Jaegyu Jang, Jang Yong Lee, Jun-Pyo Park          | 
    
    
     
        
        
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            Longitudinal Error Estimation Using Curve Matching      Byung-Hyun Lee, Sung-Hyuck Im, Moon-Beom Heo, Gyu-In Jee*          | 
    
    
     
        
        
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            Development of Intelligent GPS Positioning Technique Based on Low Cost Module for an Alley Navigation      Hye-In Kim*, Kwan-Dong Park, Hyunu Tae, Taeil Kim, Jeonghwan Lim, Pyung Chae Lim          | 
    
    
     
        
        
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            GIS Based Virtual Satellite Constrained - Weighted Least Square      Gil-Seop Jeong, Seung-Hyun Kong*          | 
    
    
     
        
        
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            A Study on DGNSS-CP(Correction Projection) Algorithm using NMEA Satellites Information Applied Smart Devices      Donghwan Yoon, Donghyun Shin, Byungwoon Park*          | 
    
    
     
        
        
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            Positioning of Moving Object by using Reflected GPS Signal      Sanguk Lee, Cheon Sig Sin          | 
    
    
     
        
        
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            Analysis of Barometric Altimeter Characteristics and Integration with GPS      La-Woo Kim, Kwang-Ho Choi, Joon-Hoo Lim, Won-Jae Yoo, Hyung-Keun Lee*          | 
    
    
     
        
        
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            Cycle-slip Detection and Correction Method in the Raw-measurement Level      Yunsub Choi, Sunyong Lee, Sunglyong Cho, MoonBeom Heo, Chansik Park, Sang Jeong Lee*          | 
    
    
     
        
        
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            Precise Heave Estimation using GPS Carrier Phase and Barometer      Dong Sun Lee, Min-Gyou Cho, In-Suk Kang, Chansik Park*          | 
    
    
     
        
        
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            Analysis of GPS Position Accuracy Degradation with Anti-jamming System      Kihoon Lee*, Hyungmin So, Jaegyu Jang, Junpyo Park          | 
    
    
     
        
        
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            Performance Analysis of the High-performance Navigation Receiver      Sunglyong Cho, Jong-Yeoun Choi, Gi-Wook Nam, Sang Jeong Lee*          | 
    
    
     
        
        
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            Statistical Analysis of the Acquisition Method for GNSS signal using the Tiered Polyphase Code      Jin Hyuk Lee, Mi Hyun Jin, Ki won Song, Jae Min Ahn, Sang Jeong Lee*          | 
    
    
     
        
        
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            Research of Galileo E1 Signal Acquisition Performance Improvement using GPGPU Technology      Junseok Yang*, Min-joon Lee,Chansik Park          | 
    
    
     
        
        
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            Feed Network for GPS-Quadrifilar Helical Antenna      Se-Been Park, Sanguk Lee, Soon-Young Eom, Woo-Geun Ahn          | 
    
    
     
        
        
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            Design an Estimation Algorithm of Pseudorange using GPS C/A Codephase Measurement      Won-Jae Yoo, Kwang-Ho Cho, Joon-Hoo Lim, La-Woo Kim, Hyoungmin So, Hyung-Keun Lee*          | 
    
    
     
        
        
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            Extend Kalman Filter based GPS Signal Tracking for The Received Weak Signal Strength Conference      Ju Hyun Lee, Deok Won Lim, Yong Kwon Choi, Chansik Park, Sang Jeong Lee*          | 
    
    
     
        
        
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            Implementation of RF Front-end for GNSS Software Receiver Using USRP      Kwi Woo Park, Min Joon Lee, Chansik Park          | 
    
    
     
        
        
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            Threshold Analysis for Integrity Test of UDRE Algorithms      Jin-Hyeok Jang*, Jong Sun Ahn, Young Jae Lee, JungMin Joo, MoonBeom Heo, SangKyung Sung          | 
    
    
     
        
        
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            GNSS Spoofing Detection using a Single Authentic Ranging Signal      Hyoungmin So*, Jaegyu Jang, Kihoon Lee, Kiwon Song, Junpyo Park          | 
    
    
     
        
        
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            Analysis of Multi Signal for GNSS Anti-Spoofing Simulation      Seong-Han Cho, Wook-Hyun Shin, Il-Kyu Park, Seung-Ho Choi, Sang-Jun Yun, Seok-Bo Son*          | 
    
    
     
        
        
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            Performance Comparison of Solution Separation and Residual Based RAIM under Single Failure Hypothesis      Jung-Beom Kim*, Ho Yun, Changdon Kee          | 
    
    
     
        
        
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            Cooperative Navigation Robust to Multipath in Urban Vehicular Networks      Hyunwoo Ko, Seung-Hyun Kong*          | 
    
    
     
        
        
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            A Methodology of the Autonomous Vehicle Position Estimation using Lane, Road Structure map-matching      Jun-Ho Ham*, Kwang-Keun Shin, Chang-Bae Moon, Hyun-Gu Yim          | 
    
    
     
        
        
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            Flight Test Result of Unmanned Helicopter using Ground-based Radio Navigation System      Jaegyu Jang*, Woo-Guen Ahn, Seungwoo Seo, Jang Yong Lee, Jun-Pyo Parh          | 
    
    
     
        
        
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            Algorithm of Creating Lateral and Longitudinal Measurement through Matching Road marker and Map      Su-Jung Lee, Byung-Hyun Lee, Sung-Hyuck Im, Moon-Beom Heo, Gyu-In Jee          | 
    
    
     
        
        
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            An Approach to Implementation of Hardware in the Loop System for GPS/INS Integrated Navigation System      Kyoung-Hwan Jo, Seung-Bok Kwon, Sang-Heon Oh, Dong-Ho Shin          | 
    
    
     
        
        
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            Design of Monte Carlo Localization for Smart-phone 3D Indoor Navigation      Young-Su Cho, Myung-In Ji, Joo-Young Kim, Ju-Il Jeon, Sang-Jun Park          | 
    
    
     
        
        
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            A Self-Correction Approach for Wi-Fi Ranging-based High Accuracy Indoor Localization      Seong Yun Cho*          | 
    
    
     
        
        
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            Smartphone Based Indoor Navigation Technology using Map-matching      Beomju Shin, Jung Ho Lee, Hyun Duk Kim, Boseon Yu, Ghangho Kim, Changdon Kee, Taikjin Lee*          | 
    
    
     
        
        
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            Comparison on Performance of Navigation Solution and Calculations According to Error Components of INS Sensor for Integr…      Tae Hyun Fang, Sul Gee Park, Sangheon Lee          | 
    
    
     
        
        
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            Design of Integration Filter for Communication Vulnerable Indoor Area      Sebum Chun*, Soon Lim, Moon-beom Heo          | 
    
    
     
        
        
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            Attitude Estimation of HMD under Dynamic Situation      So Young Park, Se Jong Heo, Jin Woo Song, Chan Gook Park*          | 
    
    
     
        
        
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            Attitude Estimation of Foot Mounted IMU considering Walking Characteristics using Adaptive Complementary Filter      Yeong-kwon Choe, Ho Jin Ju, Min Su Lee, Jin Woo Song, Chan Gook Park*          | 
    
    
     
        
        
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            Malicious Vehicle Detection to Enhance Safety of Cooperative Navigation      Sang-Yun Jeon, Seung-Hyun Kong*          | 
    
    
     
        
        
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            A Study on Utilization of LX-GNSS Network for Position Awareness of Autonomous Vehicle      Wan-suk Jung, Jong-Min Lee, Jae-Hwan Kim*          | 
    
    
     
        
        
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            Performance analysis of Real-Time Absolute Positioning (RTAP) using a Low-cost Single Frequency GPS Receiver for High-sp…      Jihye Won*, Kwan-Dong Park, Hyong-Chol Choi          | 
    
    
     
        
        
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            GRAPH-SLAM Based Precise Mapping for Autonomous Vehicle      Sung-Joon Cho*, Jun-Hyunk Im, Byung-Hyun Lee, Jong-Hwa Song, Gyu-In Jee          | 
    
    
     
        
        
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            Localization of A Land Vehicle using Monocular Visual Odometry      Sejong Heo, So Yung Park, Jin Woo Song, Chan Gook Park*          | 
    
    
     
        
        
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            Design of Robust Lane Detection Algorithm in Speed bump and Crosswalk Area      Woo Jin Jang*, Kwi Woo Park, Chansik Park          | 
    
    
     
        
        
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            A Position Estimation for the vehicle in the Urban Area Using the Building Corner Extraction      Jun-Hyuck Im, Gyu-In Jee*          | 
    
    
     
        
        
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            Multi Target Detection and Tracking in the Urban Area Using the Lidar and Vision Sensor      Kyu-Won Kim*, Gyu-In Jee          | 
    
    
     
        
        
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            Evaluation of Combined Differential GPS/BDS Positioning using Low Cost Receivers      Hyunu Tae*, Kwan-Dong Park          | 
    
    
     
        
        
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            Design of Concept to strengthen the Integrity of marine DGPS      Mi-Young Shin*, Ki-Yeol Seo          | 
    
    
     
        
        
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            Study of Siting Requirements and Multipath Error for Mobile DGNSS      Minchan Kim, Dong-Kyeong Lee, Junyoung Han, Jiyun Lee*          | 
    
    
     
        
        
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            Accuracy analysis of Kinematic Positioning using Real-time SSR Corrections and Code-Pseudorange      Miso Kim*, Jihye Won, Kwan-Dong Park          | 
    
    
     
        
        
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            Satellite and Receiver DCB estimation method utilizing IGS CORS Network      Kwang-Ho Choi, Joon-Hoo Lim, Jeong-Ho Cho, Hyung-Keun Lee*          | 
    
    
     
        
        
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            An Analysis for Detection Method of Cycle Slips on Reference Station      Younghoon Han, Mi-Young Shin, Jaeyoung Ko and Deuk-Jae Cho          | 
    
    
     
        
        
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            Threat Event Visualization of Ionospheric Spatial Decorrelation for Ground-Based Augmentation System      Moonseok Yoon, Jiyun Lee*          | 
    
    
     
        
        
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            Pseudo Range Correction Modeling of Improving DGNSS Accuracy      Dong-Hyo Sohn, Kwan-Dong Park, Hye-In Kim          | 
    
    
     
        
        
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            Design of GPS L1 Spoofing Detection Algorithm and Performance Evaluation at an Environment with RF Spoofing Signal      Soon Lim, Deok Won Lim, Sebum Chun, Sang Jeong Lee, Moon Beom Heo          | 
    
    
     
        
        
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            Interference Effect on GPS Receiver According to its Performance Parameter      Seungho Choi, Chi-hun Lee, Chae-Taek Choi, Wook-Hyun Shin          | 
    
    
     
        
        
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            Cycle-Slip Detection and Correction Method Using an Adaptive Fading Kalman Filter      Sun Young Kim, Chang Ho Kang, Chan Gook Park*          | 
    
    
     
        
        
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            Proposal of Jamming Signal Generation Module for Selective Multiple Code Technique      Jae-Sin Lee*, Jong-Seong Kim, Chi-Hun Lee, Chae-Taek Choi, Sang-Jun Yun, Seok Bo Son*          | 
    
    
     
        
        
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            Installation and Initial Operation of a GPS Jammer Localization System      Deok Won Lim*, Soon Lim, Sebum Chun, Moon Beom Heo          | 
    
    
     
        
        
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            A Time-Frequency Domain Approach for Various Chirp-Type GNSS Interference Tracking      Chang Ho Kang, Sun Young Kim, Chan Gook Park*          | 
    
    
     
        
        
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            Test Statistics Generation for Spoofing Signal Identification based on Multi-Correlator and Multi-Receiver      Seong-Hun Seo*, Byung-Hyun Lee, Dong-Jin Yeom, Gyu-In Jee          | 
    
    
     
        
        
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            The Analysis of Effectiveness for the Spoofing Signal on the Static GPS Receiver      Chi-Hun Lee*, Seong-Han Cho, Seung-Ho Choi, Chae-Taek Choi, Wook-Hyun Shin          | 
    
    
     
        
        
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            An Analysis on Configuration and Requirement for KASS Satellite Communication System      Cheon Sig Sin, Sanguk Lee, Jae Young Ahn          | 
    
    
     
        
        
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            Algorithm Suggestion on Accuracy Improvement and Protection Level Generation for Low cost GPS Receiver of Drone      Hyo-Jeong Seoj, Dong-Hwan Yoon, Cheol-Soon Lim, Byung-Woon Park*          | 
    
    
     
        
        
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            Undersampled Ionospheric Threat Model for Preliminary Design of SBAS Ionospheric Correction and Integrity Algorithm for …      Eugene Bang, Jiyun Lee*          | 
    
    
     
        
        
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            Protection Level Determination for Non-Aviation SBAS Users      Youngsun Yun*, Eunsung Lee, Moon-Beom Heo, Gi-Wook Nam          | 
    
    
     
        
        
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            Analysis on Position Estimation Performance by Application of SBAS Pseudorange      Seong-Hun Seo*, Byung-Hyun Lee, Gyu-In Jee          | 
    
    
     
        
        
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            Performance Analysis for Carrier Phase Positioning with SBAS Ranging      Young Min Yoon, ByungSeok Lee, Minhyuk Son, Hyun-Jin Jang, Jong-Yeoun Choi          | 
    
    
     
        
        
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            Performance Analysis of MSAS Corrections for Change of SBAS Message Type 25 Contents      Cheolsoon Lim, Byungwoon Park*, Hyungmin So, Jaegyu Jang, Kihoon Lee, Junpyo Park, Sungchun Bu, Cheolsoo Lee          | 
    
    
     
        
        
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            Performance Analysis of Multi-Constellation Multi-Frequency SBAS According to the Classification of SBAS User      Dong-Uk Kim, Deok-Hwa Han*, Changdon Kee*, Seung-Woo Seo, Jun-Pyo Park          |