arfhfrankie的部落格

The unanimous Global Positioning System (GPS) net was planned by the US Department of Defense, as a way to course one\\'s fixed entity anyplace in the worldwide.

The GPS scheme consists of 24 navigation satellites, which orbit the planet at a rise of nearly 12,000 miles. These satellites respectively path the earth twofold both 24 hours, and they are set up in such a way that they can send signals to any entity on the planet, whether it be overland or sea, and no substance how far-flung.

The 24 GPS satellites are continuously glad orientating data, which can be picked up by GPS Devices on the ground, and utilized to subtract direct angular distance and great circle coordinates. Depending on the instrument that is used, this notes can be precise to inwardly a few meters.

Some GPS disposition besides donate precocious features such as as dynamic mathematical function and elaborated driving directions.

Despite the common idea that GPS-enabled inclination are prohibitively expensive, and just practical in knowledge base and discipline operations, many an of these helpful gadgets are essentially designed next to the user in worry. For example, GPS handhelds can be carried around on one\\'s pocket, and are remarkably utile for a digit of functions. Certain companies, plus Nextel GPS, have even begun desegregation GPS application near widespread client products specified as ambulatory phones.