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Polarization Navigation Simulation System and Skylight Compass Method Design Based upon Moment of Inertia
Joint Authors
Liang, Huaju
Bai, Hongyang
Liu, Ning
Sui, Xiubao
Source
Mathematical Problems in Engineering
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-05-13
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
Unpolarized sunlight becomes polarized by atmospheric scattering and produces a skylight polarization pattern in the sky, which is detected for navigation by several species of insects.
Inspired by these insects, a growing number of research studies have been conducted on how to effectively determine a heading angle from polarization patterns of skylight.
However, few research studies have considered that the pixels of a pixelated polarization camera can be easily disturbed by noise and numerical values among adjacent pixels are discontinuous caused by crosstalk.
So, this paper proposes a skylight compass method based upon the moment of inertia (MOI).
Inspired by rigid body dynamics, the MOI of a rigid body with uniform mass distribution reaches the extreme values when the rigid body rotates on its symmetry axes.
So, a whole polarization image is regarded as a rigid body.
Then, orientation determination is transformed into solving the extreme value of MOI.
This method makes full use of the polarization information of a whole polarization image and accordingly reduces the influence of the numerical discontinuity among adjacent pixels and measurement noise.
In addition, this has been verified by numerical simulation and experiment.
And the compass error of the MOI method is less than 0.44° for an actual polarization image.
American Psychological Association (APA)
Liang, Huaju& Bai, Hongyang& Liu, Ning& Sui, Xiubao. 2020. Polarization Navigation Simulation System and Skylight Compass Method Design Based upon Moment of Inertia. Mathematical Problems in Engineering،Vol. 2020, no. 2020, pp.1-14.
https://search.emarefa.net/detail/BIM-1194942
Modern Language Association (MLA)
Liang, Huaju…[et al.]. Polarization Navigation Simulation System and Skylight Compass Method Design Based upon Moment of Inertia. Mathematical Problems in Engineering No. 2020 (2020), pp.1-14.
https://search.emarefa.net/detail/BIM-1194942
American Medical Association (AMA)
Liang, Huaju& Bai, Hongyang& Liu, Ning& Sui, Xiubao. Polarization Navigation Simulation System and Skylight Compass Method Design Based upon Moment of Inertia. Mathematical Problems in Engineering. 2020. Vol. 2020, no. 2020, pp.1-14.
https://search.emarefa.net/detail/BIM-1194942
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1194942