![](https://nthumb.tpgimages.com/mid2_com_img/1339/7990/TOP10231879.jpg)
Global positioning system (GPS) receiver held in a hand. 24 GPS satellites trace precision orbits around the Earth. Each satellite transmits radio signals that can be detected by this receiver. Three signals allow calculation of latitude and longitude. A fourth signal allows altitude calculations. Transmission of time data allows the calculation of local time. This is a Garmin eTrex GPS receiver that is receiving signals from eight GPS satellites and giving a location in the far north and west of Canada, just within the Arctic Circle.
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Details
Creative#:
TOP10231879
Source:
達志影像
Authorization Type:
RM
Release Information:
須由TPG 完整授權
Model Release:
N/A
Property Release:
N/A
Right to Privacy:
No
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