A pedometer navigator system has an Euler Angle Measuring Subsystem (EAMS) coupled to a body frame provides Euler angles of a fixed coordinate system with respect to a navigational coordinate system. Left and right sensors are mounted on a surveyor's feet. An SBPMS (short baseline position measuring...http://www.google.fr/patents/US6594617?utm_source=gb-gplus-shareBrevet US6594617 - Pedometer navigator system