公开(公告)号：US20180356226A1

公开(公告)日：2018-12-13

申请号：US15780853

申请日：2016-11-28

申请人： Innalabs Limited

发明人： Jose BEITIA ,  Alain RENAULT ,  Isaak OKON

IPC分类号： G01C19/38 ,  G01C21/18

CPC分类号： G01C19/38 ,  G01C21/18

摘要： The invention relates to an inertial navigation system for a carrier comprising a core comprising gyroscopic sensors making it possible to determine the angular velocity thereof according to three axes defining a reference trihedron, two of the axes defining a reference plane and the third axis being at right angles to this plane. The device comprises command and control means making it possible to rotate the core about the third axis and to determine the direction of the geographic north on the basis of the information supplied by the gyroscopic sensors and by an accelerometer placed in the reference plane; the rotation of the core being performed with a period for which the value of the Allan variance of the stability error of the gyroscopic sensors is lower than a given value guaranteeing the accuracy with which the direction of the geographic north can be known.