Title:
A BACKUP NAVIGATION SYSTEM FOR UNMANNED AERIAL VEHICLES
Document Type and Number:
WIPO Patent Application WO/2019/055340
Kind Code:
A3
Abstract:
Described is a method that involves operating an unmanned aerial vehicle (UAV) (300) to begin a flight, where the UAV (300) relies on a navigation system to navigate to a destination. During the flight, the method involves operating a camera (304) to capture images (420) of the UAV's environment, and analyzing the images to detect features in the environment. The method also involves establishing a correlation between features detected in different images, and using location information from the navigation system to localize a feature detected in different images. Further, the method involves generating a flight log that includes the localized feature. Also, the method involves detecting a failure involving the navigation system, and responsively operating the camera (304) to capture a post-failure image. The method also involves identifying one or more features in the post-failure image, and determining a location of the UAV (300) based on a relationship between an identified feature and a localized feature.
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Inventors:
ABEYWARDENA DINUKA (US)
DAMIEN JOURDAN (US)
DAMIEN JOURDAN (US)
Application Number:
PCT/US2018/050189
Publication Date:
April 18, 2019
Filing Date:
September 10, 2018
Export Citation:
Assignee:
X DEV LLC (US)
International Classes:
G01C21/32; G01C11/06; G05D1/10
Domestic Patent References:
| WO2017096548A1 | 2017-06-15 |
Other References:
TARO SUZUKI ET AL: "Development of a SIFT based monocular EKF-SLAM algorithm for a small unmanned aerial vehicle", SICE ANNUAL CONFERENCE (SICE), 2011 PROCEEDINGS OF, IEEE, 13 September 2011 (2011-09-13), pages 1656 - 1659, XP032064853, ISBN: 978-1-4577-0714-8
Attorney, Agent or Firm:
AMER, Alyaman, A. (US)
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