Positioning Technology Based On The Shadow of The Sun

DOI

10.2991/icmmita-15.2015.334How to use a DOI?

Keywords

Longitude Latitude Curve Fitting the Exhaustive Method

Abstract

Positioning technology based on the sun's shadow is a method through the analysis of the sun's shadow change of object to determine the location of object. We can use our own shadow to positioning ourselves when there is no GPS. But how to estimate it? First of all, we need to use secondary polynomial fitting to fit the shadow’s length of different time and then we can know the moment that shadow is shortest, which corresponds to Beijing time (the time in place where the east longitude 120 degrees).And we also learn that the shortest shadow’s length of the time is 12 o 'clock in the noon local time. So we can measure the longitude according to the longitude of the difference. For the latitude, this method use exhaustive technique, combining with different times of the azimuth that we known, a measurement of the different latitude of the sun’s azimuth change, as a benchmark, comparing with the given data by MATLAB. Finally, the latitude that change laws are same is what we need.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Xuanchang Gao
PY  - 2015/11
DA  - 2015/11
TI  - Positioning Technology Based On The Shadow of The Sun
BT  - Proceedings of the 2015 3rd International Conference on Machinery, Materials and Information Technology Applications
PB  - Atlantis Press
SP  - 1791
EP  - 1794
SN  - 2352-538X
UR  - https://doi.org/10.2991/icmmita-15.2015.334
DO  - 10.2991/icmmita-15.2015.334
ID  - Gao2015/11
ER  -