Simple said satellite phone is rely on satellite wireless network for realizing the function of telephone equipment, and our principle is the same as the ordinary mobile phone, just a ordinary mobile phones like GSM CDMA system is the ground of the base station signal network to achieve voice, SMS and data function, this is also the cause of satellite phones, satellite network is not affected by earthquake, storm, flood, if the ground mobile network paralysis when this time is the time for satellite phones, satellite phones so more expensive than ordinary mobile phones and prices at the same time also more expensive than ordinary mobile phone charges, however, satellite phones today this concept is no longer so strange, has spread slowly, in civilian areas such as tourism now everyone often carry GPS and satellite phones, GPS is to accept the satellite signal to realize positioning function, is unable to provide voice and data features, so the two can complement each other. Here let's meet satellite phone in several ways:
First, from the aspects of hardware to meet several satellite telephone:
In the aspect of hardware with the development of the era of more and more small volume, all previous equipment like notebook size, especially the maritime satellite volume is big, because maritime satellite is high orbit satellite, and requirement of the antenna power is larger, stronger directivity, due to the development of science and technology in recent years its hardware volume smaller and smaller. Iridium is Leo satellite global coverage, so iridium satellite phone is generally very well; The eurostar satellite phone is one of the most young generation satellite network, its equipment especially for handheld devices is more fashion, typically for color screen mobile phone, call quality is good also, but coverage is the short board, can not cover all over the world.