公开(公告)号：US11681149B2

公开(公告)日：2023-06-20

申请号：US17557589

申请日：2021-12-21

Applicant: THALES

Inventor： Matthieu Grossetete ,  Siegfried Rouzes ,  David Deceneux

IPC: G02B27/01

CPC classification number: G02B27/0179 ,  G02B27/017 ,  G02B2027/0198

Abstract: This method, implemented in a mounted information display device, which incorporates a main sensor and an inertial sensor, and which determines the positioning by a hybrid inertial method including determining a calculated position by a main method using data acquired by the main sensor and determining a succession of estimated positions using the calculated position and data acquired by the inertial sensor, includes: obtaining at a first calculation time instant T1 a first estimated position of the device at a reference time instant, calculated by the hybrid inertia method; obtaining at a second time instant T2 a second estimated position of the device at the same reference time instant, calculated by the main method; comparing a difference between the first and second positions and a tolerance threshold; and, if the difference is less than the threshold, validating the positioning calculation by the hybrid inertial method, otherwise raising an alert.

公开(公告)号：US20220206305A1

公开(公告)日：2022-06-30

申请号：US17557589

申请日：2021-12-21

Applicant: THALES

Inventor： Matthieu Grossetete ,  Siegfried Rouzes ,  David Deceneux

IPC: G02B27/01

Abstract: This method, implemented in a mounted information display device, which incorporates a main sensor and an inertial sensor, and which determines the positioning by a hybrid inertial method including determining a calculated position by a main method using data acquired by the main sensor and determining a succession of estimated positions using the calculated position and data acquired by the inertial sensor, includes: obtaining at a first calculation time instant T1 a first estimated position of the device at a reference time instant, calculated by the hybrid inertia method; obtaining at a second time instant T2 a second estimated position of the device at the same reference time instant, calculated by the main method; comparing a difference between the first and second positions and a tolerance threshold; and, if the difference is less than the threshold, validating the positioning calculation by the hybrid inertial method, otherwise raising an alert.