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GOIOVE-B 위성 E5a Secondary Code 결정 및 신호처리 결과
주인원 ( In One Joo ),신천식 ( Chun Sik Shin ),이사욱 ( Sang Uk Lee ),김재훈 ( Jae Hoon Kim ) 한국항공운항학회 2008 한국항공운항학회지 Vol.16 No.4
GIOVE-B is the second experimental Galileo satellite for the Galileo In-Orbit Validation, which was launched by a Soyuz/Fregat rocket departing from the Baikonur cosmodrome in Kazakhstan on 27 April and now operated successfully. This paper presents the results obtained from processing of the E5a signal transmitted from the GlOVE-B. The acquisition and tracking of the data and pilot channels are performed by the E5a software receiver implemented by ETRI. Moreover, the paper suggests the GIOVE-B E5a-I/ESa-Q secondary code, which is determined by analyzing the correlation output of the primary correlator using the primary code.
論文(논문) : 한국에서 QZSS 위성의 L1 C/A 신호처리 결과
주인원 ( In One Joo ),신천식 ( Chun Sik Shin ),이상욱 ( Sang Uk Lee ) 한국항공운항학회 2011 한국항공운항학회지 Vol.19 No.2
Michibiki is the first QZSS satellite, which was launched by a H-IIA rocket departing from the Tanegshima in Japan on 11 September, 2010 and now operated successfully. This paper presents the results obtained from processing of the L1 C/A signal transmitted from the QZSS satellite. The acquisition and tracking are performed by the L1 software receiver implemented by ETRI. The signal processing results show that QZSS L1 C/A signal is normally processed through the tracking loop results of FLL, PLL, and DLL, the EPL correlator output, and the C/No output. Finally, the paper demonstrates that the QZSS satellite could be used in the navigation system together with the GPS satellite in Korea.
論文(논문) : 한국에서 QZSS 위성의 L5 신호처리 결과
주인원 ( In One Joo ),이상욱 ( Sang Uk Lee ) 한국항공운항학회 2011 한국항공운항학회지 Vol.19 No.4
Launch of the first Quasi-Zentih Satellite System (QZSS) satellite, dubbed Michibiki, took place September 11, 2010 and technical and application verification of the satellite is being carried out. This paper presents the results obtained from processing of the L5 signal transmitted from the QZSS satellite. The QZSS L5 signal is collected in ETRI, Korea. And then, the acquisition and tracking are performed by the L5 software receiver implemented by ETRI. The tracking loop of FLL, PLL, and DLL, the EPL correlator output, and the C/No output results show that the QZSS L5 signal is normally processed. Finally, the paper demonstrates that the QZSS L5 signal could be used as GPS satellite based augmentation system in Korea as well as Japan.
GPS L5 신호에서 신속한 코드위상 재검색 및 정밀 도플러 결정 기법
주인원 ( In One Joo ),최승현 ( Seung Hyun Choi ),김재현 ( Jae Hyun Kim ),신천식 ( Chun Sik Shin ),이상욱 ( Sang Uk Lee ),김재훈 ( Jae Hoon Kim ) 한국항공운항학회 2009 한국항공운항학회지 Vol.17 No.4
According to the GPS modernization, L5 is the third civilian GPS signal, broadcasts in a radio band reserved exclusively for aviation safety services. However, as the code length of GPS L5 is ten times longer than that of GPS L1, the acquisition processing time in GPS L5 takes longer than that of L1. This characteristics make the code phase detected initially change and cause the tracking loop to unlock. In order to overcome this problem, this paper proposes L5 acquisition schemes for the rapid code phase re-search and the fine doppler determination. The feasibility of the proposed scheme is demonstrated through the simulation results.