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

Civil Engineering

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