Title:
HEADING CHECKING METHOD AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2016/198009
Kind Code:
A1
Abstract:
A heading checking method and apparatus. The method comprises: obtaining the acceleration, angular velocity, and earth magnetic field intensity of a mobile terminal in a pre-set coordinate system (10); obtaining, by means of an attitude and heading reference system and according to the obtained acceleration, angular velocity, and earth magnetic field intensity of the mobile terminal in the pre-set coordinate system, a rotation matrix that converts the pre-set coordinate system into an East-North-Up coordinate system (20); projecting, according to the rotation matrix obtained after conversion, the acceleration of the mobile terminal in the pre-set coordinate system onto the East-North-Up coordinate system, so as to obtain the data of the acceleration in the horizontal plane of the East-North-Up coordinate system; analyzing the obtained data of the acceleration in the horizontal plane of the East-North-Up coordinate system for the main component, and extracting the straight line in which the acceleration has the largest change within a pre-set time period is located, so as to obtain the heading of the mobile terminal (40). By using the heading checking method and apparatus, a mobile terminal requires no fixed grip, thereby enhancing the stability of heading determination and increasing the number of situations where heading checking can be applied.
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Inventors:
LUO SHENGMEI (CN)
PEI LING (CN)
XIE SIYUAN (CN)
WANG LIN (CN)
QIAN JIUCHAO (CN)
WEI WEI (CN)
PEI LING (CN)
XIE SIYUAN (CN)
WANG LIN (CN)
QIAN JIUCHAO (CN)
WEI WEI (CN)
Application Number:
PCT/CN2016/086744
Publication Date:
December 15, 2016
Filing Date:
June 22, 2016
Export Citation:
Assignee:
ZTE CORP (CN)
International Classes:
G01C21/00; G01P13/02
Domestic Patent References:
| WO2014039552A1 | 2014-03-13 | |||
| WO2014010727A1 | 2014-01-16 |
Foreign References:
| CN103245797A | 2013-08-14 | |||
| EP2657647A1 | 2013-10-30 | |||
| JP2014167460A | 2014-09-11 |
Other References:
FANG, SHUZHI;: "Research of Indoor-outdoor Navigation Scheme Based on Multi-mode Wireless Localization Technology", ELECTRONIC TECHNOLOGY & INFORMATION SCIENCE , CHINA MASTER'S THESES FULL-TEXT DATABASE, 15 August 2015 (2015-08-15), ISSN: 1674-0246
Attorney, Agent or Firm:
AFD CHINA INTELLECTUAL PROPERTY LAW OFFICE (CN)
北京安信方达知识产权代理有限公司 (CN)
北京安信方达知识产权代理有限公司 (CN)
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