公开(公告)号：EP3734224A3

公开(公告)日：2021-01-06

申请号：EP20171149.6

申请日：2020-04-23

Applicant: STMicroelectronics Inc. ,  STMicroelectronics S.r.l.

Inventor： JAIN, Mahaveer ,  CHOWDHARY, Mahesh ,  MURA, Roberto ,  PALELLA, Nicola Matteo ,  COLOMBO, Leonardo

IPC: G01C21/16 ,  G01C25/00

Abstract: A device (120) including microelectromechanical systems (MEMS) sensors are used in dead reckoning in conditions where Global Positioning System (GPS) signals or Global Navigation Satellite System (GNSS) signals are lost. The device (120) is capable of tracking the location of the device after the GPS/GNSS signals are lost by using MEMS sensors such as accelerometers and gyroscopes. By calculating a misalignment angle between a forward axis of a sensor frame of the device and a forward axis of a vehicle (110) frame using the data received from the MEMS sensors, the device can accurately calculate the location of a user or the vehicle of the device even without the GPS/GNSS signals. Accordingly, a device capable of tracking the location of the user riding in the vehicle in GPS/GNSS signals absent environment can be provided.

公开(公告)号：EP3967976A1

公开(公告)日：2022-03-16

申请号：EP21306152.6

申请日：2021-08-26

Applicant: STMicroelectronics (Grand Ouest) SAS ,  STMicroelectronics S.r.l. ,  STMicroelectronics, Inc.

Inventor： PALELLA, Nicola Matteo ,  COLOMBO, Leonardo ,  DONADEL, Andrea ,  MURA, Roberto ,  JAIN, Mahaveer ,  PHILIPPE, Joelle

IPC: G01C21/16 ,  G01C21/28

Abstract: A method, comprising: receiving motion data from at least one inertial sensing unit (11) and absolute positioning data from a global navigation system (13) in a wheeled vehicle; applying pre-processing (21, 22, 23) to motion data as a function of absolute positioning data, obtaining pre-processed motion data and at least one estimated velocity value (v in , v GNSS ) of the wheeled vehicle; applying pipeline data processing (24) to pre-processed motion data as a function of the at least one estimated velocity value (v in , v GNSS ) of the wheeled vehicle, obtaining a calculated virtual vehicle velocity (v o ) as a result; applying position-velocity-attitude, PVA, filtering (23) to pre-processed motion data and to at least one of absolute positioning data and the calculated virtual vehicle velocity (v o ), obtaining fused data indicative of position, velocity and attitude information of the wheeled vehicle as a result. The pipeline data processing (24) comprises: high-pass or low-pass filtering (25) pre-processed motion data and obtaining filtered data as a result; applying frequency-domain transformation (26) to filtered data and obtaining, as a result, frequency analyzed data comprising individual spectral power density signals including a set of power-maximizing frequencies; calculating (27, 28), as a function of said set of power-maximizing frequencies, a wheel angular frequency signal (f w ) and a wheel size signal (C w ); calculating (29) said virtual vehicle velocity (v o ) as a function of said wheel angular frequency signal (f w ) and said wheel size signal (C w ).

公开(公告)号：EP3734224A2

公开(公告)日：2020-11-04

申请号：EP20171149.6

申请日：2020-04-23

Applicant: STMicroelectronics Inc. ,  STMicroelectronics S.r.l.

Inventor： JAIN, Mahaveer ,  CHOWDHARY, Mahesh ,  MURA, Roberto ,  PALELLA, Nicola Matteo ,  COLOMBO, Leonardo

IPC: G01C21/16 ,  G01C25/00

Abstract: A device (120) including microelectromechanical systems (MEMS) sensors are used in dead reckoning in conditions where Global Positioning System (GPS) signals or Global Navigation Satellite System (GNSS) signals are lost. The device (120) is capable of tracking the location of the device after the GPS/GNSS signals are lost by using MEMS sensors such as accelerometers and gyroscopes. By calculating a misalignment angle between a forward axis of a sensor frame of the device and a forward axis of a vehicle (110) frame using the data received from the MEMS sensors, the device can accurately calculate the location of a user or the vehicle of the device even without the GPS/GNSS signals. Accordingly, a device capable of tracking the location of the user riding in the vehicle in GPS/GNSS signals absent environment can be provided.

公开(公告)号：EP2927641B1

公开(公告)日：2019-10-16

申请号：EP15161489.8

申请日：2015-03-27

Applicant: STMicroelectronics S.r.l.

Inventor： PALELLA, Nicola Matteo ,  COLOMBO, Leonardo

IPC: G01C21/16 ,  G01C25/00 ,  G01C19/5621 ,  G01C19/5656 ,  G01C19/5684 ,  G01C19/5712 ,  G01S19/49

公开(公告)号：EP4354181A1

公开(公告)日：2024-04-17

申请号：EP23199224.9

申请日：2023-09-22

Applicant: STMicroelectronics S.r.l.

Inventor： RENNA, Michele ,  PALELLA, Nicola Matteo

IPC: G01S19/07

CPC classification number: G01S19/072

Abstract: A method for performing a correction of a ionospheric error affecting pseudo-ranges measurements in a GNSS receiver comprising in a navigation processing procedure performed at a GNSS receiver receiving pseudo range measurements previously calculated by said GNSS receiver obtained from a first carrier signal and a second carrier signal in said satellite signals, performing a correction procedure of said pseudo-range measurements comprising applying to said pseudo-range measurements corrections for predictable errors obtaining corrected pseudo-ranges and applying (15) to said corrected pseudo-range measurements a further ionospheric error correction calculation to obtain further ionospheric error correction values, and performing a position calculation operation (14) processing said corrected pseudo-range measurements and said ionospheric error correction values and outputting position, velocity and time information (PVT) of the GNSS receiver. Said applying to said corrected pseudo-ranges comprises a further ionospheric error correction calculation to obtain further ionospheric error correction values and supplying it to said position calculation operation only, otherwise performing (17) a standard ionospheric error correction derived from GNSS navigation data, in particular by Klobuchar/Nequick models and/or SBAS.