METHOD FOR VERIFYING GLOBAL NAVIATION SATELLITE SYSTEM SPACE VEHICLE SIGNAL AND GNSS RECEIVER

Disclosed are a system and a method for verifying a global navigation satellite system (GNSS) space vehicle (SV) signal. An extremely weak frame synchronization (EWFS) verification process is executed with respect to a current SV signal for another verified SV signal. After the entire frame synchron...

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Bibliographic Details
Main Authors RAMAN SUNDAR, HIGGINS WILLIAM JOSEPH, SCHERRER FRANCIS KEITH, JAFARNIA JAHROMI ALI
Format Patent
LanguageEnglish
Korean
Published 30.08.2023
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Summary:Disclosed are a system and a method for verifying a global navigation satellite system (GNSS) space vehicle (SV) signal. An extremely weak frame synchronization (EWFS) verification process is executed with respect to a current SV signal for another verified SV signal. After the entire frame synchronization occurs based on a peak EWFS correlation value of the current SV signal which is equal to or greater than a first critical value, a mark of frame synchronization completion on the current SV signal is set. The mark may be set early based on the peak EWFS correlation value of the current SV signal greater than a second critical value, which is greater than the first critical value. The tracking of the current SV signal may be terminated early based on the peak EWFS correlation value of the current SV signal smaller than a third critical value, which is smaller than the first critical value. The purpose of the present invention is to provide a method for verifying a GNSS space vehicle signal with improved performance, and a GNSS receiver. 위성 항법 위성 시스템(GNSS) 우주선(Space Vehicle) 신호를 검증하기 위한 시스템 및 방법이 개시된다. 매우 약한 프레임 동기화(EWFS) 검증 프로세스는 다른 검증된 SV 신호에 대한 현재 SV 신호에 대해 실행된다. 현재 SV 신호의 피크 EWFS 상관 값이 제1 임계치와 같거나 큰 것에 기초하여 전체 프레임 동기화가 발생한 후 현재 SV 신호에 대한 프레임 동기화가 완료되었다는 표시가 설정된다. 표시는 현재 SV 신호의 피크 EWFS 상관 값이 제1 임계값보다 큰 제2 임계값보다 큰 것에 기초하여 조기에 설정될 수 있다. 현재 SV 신호의 추적은 현재 SV 신호의 피크 EWFS 상관값이 제1 임계값보다 작은 제3 임계값보다 작은 것에 기초하여 조기에 종료될 수 있다.
Bibliography:Application Number: KR20230016618