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/).
Cite this article
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 -