The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 31, 2020
Filed:
Jul. 04, 2016
Shanghai Huace Navigation Technology Ltd, Shanghai, CN;
Rui Tu, Shanghai, CN;
Xuefeng Shen, Shanghai, CN;
Wenlong Zhao, Shanghai, CN;
Wending Dai, Shanghai, CN;
Qiang Yue, Shanghai, CN;
SHANGHAI HUACE NAVIGATION TECHNOLOGY LTD, Shanghai, CN;
Abstract
A precision calibration method of attitude measuring systems is provided. The precision calibration method of attitude measuring systems includes the following steps: calibrating a zero-deviation, a scale coefficient, and a non-orthogonal angle between axes of an accelerometer to the attitude measuring system via an ellipsoid fitting model (S); compensating original data of the accelerometer using a calculated ellipsoid parameter (S); calibrating an electronic compass via the ellipsoid fitting model according to compensated accelerometer data (S); compensating original electronic compass data by the calculated ellipsoid parameter (S); calculating an attitude according to the compensated data of the accelerometer and compensated data of the electronic compass (S). The above steps of the method have a reliable calibration result and a high precision with a less time consumption of calibration.