Global Positioning System: Difference between revisions
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*'''Weather Prediction Improvements''' — Measurement of atmospheric bending of GPS satellite signals by specialized GPS receivers in orbital satellites can be used to determine atmospheric conditions such as air density, temperature, moisture and electron density. Such information from a set of six micro-satellites, launched in April 2006, called the Constellation of Observing System for Meteorology, Ionosphere and Climate [[COSMIC]] has been proven to improve the accuracy of weather prediction models. | *'''Weather Prediction Improvements''' — Measurement of atmospheric bending of GPS satellite signals by specialized GPS receivers in orbital satellites can be used to determine atmospheric conditions such as air density, temperature, moisture and electron density. Such information from a set of six micro-satellites, launched in April 2006, called the Constellation of Observing System for Meteorology, Ionosphere and Climate [[COSMIC]] has been proven to improve the accuracy of weather prediction models. | ||
*'''Photograph annotation''' — Combining GPS position data with [[photographs]] taken with a (typically digital) | *'''Photograph annotation''' — Combining GPS position data with [[photographs]] taken with a (typically digital) camera, allows one to lookup the locations where the photographs were taken in a [[gazeteer]], and automatically annotate the photographs with the name of the location they depict. The GPS device can be integrated into the camera, or the timestamp of a picture's [[metadata]] can be combined with a GPS track log.<ref>Diomidis Spinellis. [http://www.spinellis.gr/pubs/jrnl/2003-PC-GTWeb/html/gtweb.html Position-annotated photographs: A geotemporal web]. IEEE Pervasive Computing, 2(2):72–79, April-June 2003. ([http://dx.doi.org/10.1109/MPRV.2003.1203756 doi:10.1109/MPRV.2003.1203756])</ref><ref>K. Iwasaki, K. Yamazawa, and N. Yokoya. An indexing system for photos based on shooting position and orientation with geographic database. In ''IEEE International Conference on Multimedia and Expo, ICME 2005'', pages 390–393, 2005. ([http://dx.doi.org/10.1109/ICME.2005.1521442 doi:10.1109/ICME.2005.1521442])</ref> | ||
*'''[[Skydiving]]''' — Most commercial drop zones use a GPS to aid the pilot to "spot" the plane to the correct position relative to the dropzone that will allow all skydivers on the load to be able to fly their canopies back to the landing area. The "spot" takes into account the number of groups exiting the plane and the upper winds. In areas where skydiving through cloud is permitted the GPS can be the sole visual indicator when spotting in overcast conditions, this is referred to as a "GPS Spot". | *'''[[Skydiving]]''' — Most commercial drop zones use a GPS to aid the pilot to "spot" the plane to the correct position relative to the dropzone that will allow all skydivers on the load to be able to fly their canopies back to the landing area. The "spot" takes into account the number of groups exiting the plane and the upper winds. In areas where skydiving through cloud is permitted the GPS can be the sole visual indicator when spotting in overcast conditions, this is referred to as a "GPS Spot". | ||