Patent · US Active

Contour line matching method based on sliding window data backtracking

US11835344B2 · kind B2 · utility

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10Claims

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Assignee

SOUTHEAST UNIVERSITY · CN

Inventors

Xianghong CHENG · Nanjing, CN
Peng Ding · Shanghai, CN

Key dates

Filing date	Oct 10, 2022
Grant date	Dec 5, 2023
Priority date	—
Expiry date	Oct 10, 2042

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02D30/70
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

To obtain a global optimal navigation track, a contour line matching method based on sliding window data backtracking includes the steps of determining sliding window parameters according to the calculation performance of a real-time multi-task operating system and aided navigation precision requirements, constructing a sliding window data backtracking framework by using historical physical field value matching data, obtaining a rotation transformation matrix from an indication track point set to a closest reference point set by adopting a matrix eigenvalue and eigenvector decomposition method, and moving a sliding window and performing forward and reverse cyclic matching to achieve a global track constraint, thereby improving the matching precision and robustness.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.