Title:
POSITIONING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/009561
Kind Code:
A1
Abstract:
Provided is a positioning system that is capable of highly accurately measuring a target position while preventing a computation amount from increasing. One example of this positioning system comprises a plurality of RDFs 10-1 to 10-6 that each estimate the direction of arrival (DOA) of a radio signal transmitted from an aircraft 40 that is a target for three-dimensional positioning and a positioning unit 20 for measuring the position of the aircraft 40 on the basis of the DOAs estimated by each of the RDFs and the positions of each of the RDFs. The positioning unit 20 has a factor graph structure formed using a plurality of nodes.
Inventors:
MATSUMOTO TADASHI (JP)
CHENG MENG (JP)
AZIZ MUHAMMAD REZA KAHAR (JP)
NAKADA TATSUHIRO (JP)
CHENG MENG (JP)
AZIZ MUHAMMAD REZA KAHAR (JP)
NAKADA TATSUHIRO (JP)
Application Number:
PCT/JP2021/020645
Publication Date:
January 13, 2022
Filing Date:
May 31, 2021
Export Citation:
Assignee:
HITACHI INT ELECTRIC INC (JP)
International Classes:
G01S5/04
Foreign References:
| JP2015087245A | 2015-05-07 | |||
| US20100289699A1 | 2010-11-18 | |||
| JP2001091622A | 2001-04-06 |
Other References:
CHENG, M. ET AL.: "A DOA- based factor graph technique for 3D multi-target geolocation", IEEE ACCESS, vol. 7, 15 July 2019 (2019-07-15), pages 94630 - 94641, XP011736795, DOI: 10.1109/ACCESS.2019.2928851
AZIZ, M. R. K. ET AL.: "A new DOA-based factor graph geolocation technique for detection of unknown radio wave emitter position using the first-order taylor series approximation", EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING, vol. 2016, no. 189, 18 August 2016 (2016-08-18), pages 1 - 10, XP021267888, DOI: https://doi.org/10.1186/s13638-016-0683-4
AZIZ, M. R. K. ET AL.: "Achieving accurate geo- location detection using joint RSS-DOA factor graph technique", 2016 10TH INTERNATIONAL CONFERENCE ON TELECOMMUNICATION SYSTEMS SERVICES AND APPLICATIONS (TSSA, 6 October 2016 (2016-10-06), pages 1 - 6, XP033073268, DOI: 10.1109/TSSA.2016.7871076
AZIZ, M. R. K. ET AL.: "A new DOA-based factor graph geolocation technique for detection of unknown radio wave emitter position using the first-order taylor series approximation", EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING, vol. 2016, no. 189, 18 August 2016 (2016-08-18), pages 1 - 10, XP021267888, DOI: https://doi.org/10.1186/s13638-016-0683-4
AZIZ, M. R. K. ET AL.: "Achieving accurate geo- location detection using joint RSS-DOA factor graph technique", 2016 10TH INTERNATIONAL CONFERENCE ON TELECOMMUNICATION SYSTEMS SERVICES AND APPLICATIONS (TSSA, 6 October 2016 (2016-10-06), pages 1 - 6, XP033073268, DOI: 10.1109/TSSA.2016.7871076
Attorney, Agent or Firm:
TAMURA Chikashi et al. (JP)
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