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:
Apr. 26, 2022
Filed:
Jul. 07, 2020
Harbin Engineering University, Harbin, CN;
Bo Xu, Harbin, CN;
Lianzhao Wang, Harbin, CN;
Lei Wu, Harbin, CN;
Shengxin Li, Harbin, CN;
Jiao Zhang, Harbin, CN;
Kunming Jin, Harbin, CN;
Yu Guo, Harbin, CN;
Dalong Zhang, Harbin, CN;
HARBIN ENGINEERING UNIVERSITY, Harbin, CN;
Abstract
The invention provides a method for initial alignment of radar assisted airborne strapdown inertial navigation system. By calculating the slant distance and angular position between the radar and the airborne inertial navigation equipment, a nonlinear measurement equation for the initial alignment of the radar assisted inertial navigation system is obtained. The unscented Kalman filter algorithm is used to estimate and compensate the error amount of strapdown inertial navigation system to complete the initial alignment task. The significance of the present invention is to provide an in-flight initial alignment solution when the global positioning system is limited, which has fast convergence speed and high estimation accuracy and has high engineering application value.