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논문 기본 정보

자료유형
학술저널
저자정보
정준우 (LIG Nex1, Seongnam, Kyeonggi-do 13488, Korea) 원현희 (LIG Nex1, Seongnam, Kyeonggi-do 13488, Korea) 박대영 (LIG Nex1, Seongnam, Kyeonggi-do 13488, Korea) 강승민 (LIG Nex1, Seongnam, Kyeonggi-do 13488, Korea) 고종규 (LIG Nex1, Seongnam, Kyeonggi-do 13488, Korea) 권승복 (LIG Nex1, Seongnam, Kyeonggi-do 13488, Korea) 박귀우 (Duksan Navcours, Daejeon 34014, Korea) 조봉우 (Duksan Navcours, Daejeon 34014, Korea) 안우근 (Agency for Defense Development, Daejeon 34602, Korea) 윤성욱 (Agency for Defense Development, Daejeon 34602, Korea)
저널정보
사단법인 항법시스템학회 Journal of Positioning, Navigation, and Timing Journal of Positioning, Navigation, and Timing Vol.13 No.3
발행연도
2024.9
수록면
257 - 268 (12page)
DOI
10.11003/JPNT.2024.13.3.257

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The Korea Augmentation Satellite System (KASS) satellite was successfully launched and service is being started. By receiving messages transmitted from the KASS satellite, users can employ the messages to improve positioning accuracy or to verify the integrity of Global Positioning System (GPS). In this paper, we propose a test method for a beam-formed GPS receiver developed to improve the survivability of KASS augmented messages that can enhance positioning accuracy even in an environment with jamming or interfering signals. Through the test method proposed in this paper, quantitative verification is performed for a beam-formed GPS receiver aimed at maintaining the augmented navigation solution to which KASS augmented messages are applied by tracking the KASS signal as much as possible under conditions where the jamming signal strength is gradually increasing. In addition, the proposed test method includes three conditions; first, a static lab test method for repeated verification of functions under the same conditions; second, a static outdoor test method for performance verification in an operating environment of a platform equipped with the beam-formed GPS receiver; and finally, a dynamic lab test method for performance verification of a moving platform equipped with the beam-formed GPS receiver toward a jammer. In this paper, we propose a method for simulating the jamming signal incident direction through the phase delay of an RF cable designed to prevent unintentional jamming signal emission in both lab and outdoor tests, and a method of applying test software for injecting a jamming signal to compare the survivability performance consistently according to the presence or absence of beamforming signal processing. Through the proposed test method, it was verified that the augmented navigation solution could be output for a longer time period when the beamforming signal processing was applied to the KASS satellite signal in the beam-formed GPS receiver.

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