Evidence map›Paper›PMID 29135927›Full record

ArticleSensors (Basel, Switzerland)2017

Design and Calibration of a Novel Bio-Inspired Pixelated Polarized Light Compass.

Guoliang Han, Xiaoping Hu, Junxiang Lian, Xiaofeng He, Lilian Zhang, Yujie Wang, Fengliang Dong

Open access · goldAbstract read
In one paragraph

Article in Sensors (Basel, Switzerland), 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
2.7field-weighted citation impact, top 10% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

9 citing papers in PubMed, 62 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 2 institutions in 1 country.

Guoliang HanCollege of Mechatronics and Automation, National University of Defense Technology, Changsha 410073, China. hanguoliang09@nudt.edu.cn.ORCID 0000-0002-7291-9599
Xiaoping HuCollege of Mechatronics and Automation, National University of Defense Technology, Changsha 410073, China. xphu@nudt.edu.cn.
Junxiang LianCollege of Mechatronics and Automation, National University of Defense Technology, Changsha 410073, China. jx_lian@hotmail.com.
Xiaofeng HeCollege of Mechatronics and Automation, National University of Defense Technology, Changsha 410073, China. hexiaofeng@nudt.edu.cn.
Lilian ZhangCollege of Mechatronics and Automation, National University of Defense Technology, Changsha 410073, China. lilianzhang@nudt.edu.cn.
Yujie WangCollege of Mechatronics and Automation, National University of Defense Technology, Changsha 410073, China. yjwang@nudt.edu.cn.
Fengliang DongNanofabrication Laboratory, Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China. dongfl@nanoctr.cn.
National University of Defense Technology · CNNational Center for Nanoscience and Technology · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Animals, such as Savannah sparrows and North American monarch butterflies, are able to obtain compass information from skylight polarization patterns to help them navigate effectively and robustly. Inspired by excellent navigation ability of animals, this paper proposes a novel image-based polarized light compass, which has the advantages of having a small size and being light weight. Firstly, the polarized light compass, which is composed of a Charge Coupled Device (CCD) camera, a pixelated polarizer array and a wide-angle lens, is introduced. Secondly, the measurement method of a skylight polarization pattern and the orientation method based on a single scattering Rayleigh model are presented. Thirdly, the error model of the sensor, mainly including the response error of CCD pixels and the installation error of the pixelated polarizer, is established. A calibration method based on iterative least squares estimation is proposed. In the outdoor environment, the skylight polarization pattern can be measured in real time by our sensor. The orientation accuracy of the sensor increases with the decrease of the solar elevation angle, and the standard deviation of orientation error is 0 . 15 ∘ at sunset. Results of outdoor experiments show that the proposed polarization navigation sensor can be used for outdoor autonomous navigation.

Indexed as

CalibrationAnimalsLeast-Squares AnalysisOrientationSunlightpixelated polarizer arraypolarization navigationRayleigh scatteringsensor calibrationskylight polarization pattern

Identifiers

PMID29135927
PMCPMC5713120
OpenAlexW2769432576

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.