公开(公告)号：US20230296782A1

公开(公告)日：2023-09-21

申请号：US17880621

申请日：2022-08-03

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sundar RAMAN ,  Raul H. ETKIN ,  Jamie A. HENRIKSEN

IPC: G01S19/07 ,  G01S19/11

CPC classification number: G01S19/07 ,  G01S19/115

Abstract: A system and a method are disclosed for detecting a spurious signal in a Global Navigation Satellite System (GNSS) receiver. A detector of the GNSS receiver determines a first sequence of known bits or known-bit transitions of a space vehicle (SV) signal of a target SV. A second sequence is determined based on a coherent sum of the SV signal being tracked by the GNSS receiver. A first reliability sequence may be associated with the first sequence, and a second reliability sequence that may be associated with the second sequence. A correlation statistic of the first sequence is determined based on the second sequence. Whether the first SV signal is a spurious signal is determined based on a comparison of the correlation statistic to a threshold value.

公开(公告)号：US20230266479A1

公开(公告)日：2023-08-24

申请号：US17880612

申请日：2022-08-03

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ali JAFARNIA JAHROMI ,  Francis Keith SCHERRER ,  Sundar RAMAN ,  William Joseph HIGGINS

IPC: G01S19/37 ,  G01S19/22 ,  G01S19/23

CPC classification number: G01S19/37 ,  G01S19/22 ,  G01S19/23

Abstract: A system and a method are disclosed for verifying a Global Navigation Satellite System (GNSS) space vehicle (SV) signal. An extremely weak frame synchronization (EWFS) verification process is run on a current SV signal with respect to another verified SV signal. An indication is set that frame synchronization for the current SV signal is complete after full frame synchronization occurs based on a peak EWFS correlation value of the current SV signal being equal to or greater than a first threshold. The indication may be set early based on the peak EWFS correlation value of the current SV signal being greater than a second threshold value that is greater than the first threshold. Tracking of the current SV signal may be terminated early based on the peak EWFS correction value of the current SV signal being less than a third threshold that is less that the first threshold.