Satellite phones have made communication much easier in areas which do not have mobile phone reception. The sat mobile phones make use of a signal of LEO satellites that constantly hovering above the Earth's surface. These satellites are connected with one another and also are in contact with ground based sensors called gateways. They are the ground stations keeping route of the satellite activities. The sat mobile phones connect to the satellites and send info to other mobile phones by means of the satellites. The satellites in fact become the medium of data transmission for sat mobile phones.

The main satellite phone networks of the world are the Globalstar and also the Iridium satellite networks. Globalstar possesses around 44 operating satellites till date and Iridium has also 66 operating satellites.

The LEO satellites hover above the sky at very high speeds and fly at low altitudes from the Earth's surface. The typical altitude of these satellites is approximately 400 to 700 miles above the Earth's surface.

This service of monitoring has many applications. For military uses they work to find mobile phone networks from enemy installations. Bombs are fried according to the estimates from sat mobile phone monitoring. For those mountaineers , monitoring is vitally important because with it they can stay connected with the rest of the world. Their location in the globe can be approximated from this technology. It helps them to navigate from place to place. Aircrafts use satellite tracking to keep track of their flight trajectory and ships also use satellite monitoring as well for different applications.

Satellite phone tracking can make things easier for international travelers. New armies and air forces worldwide are using satellite tracking for surveillance and missions. This technology helps in monitor international terrorists and their hideouts can be bombed correctly.

Marine engineering firms count on this technology for risky operations like deep sea drilling and mining. It has absolutely transformed our lives with this marvelous technology.

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